co VOL 22 NO2 JUNE 1982

__N 5 NEW ER NATIONAL CONFERENCE OF STANDARDS LABORATORIES

PRESIDENTS MESSAGE - ADVOCACY

The new MIL STD 45662 has been the subject of many regional meetings a workshop at the 1981 NCSL Conference in Boulder Colo and a major concern of any company with government contracts

Last January I sent each NCSL member a copy ofthe proposed revision to HDBK 52 and asked for comments to be sent to the Vice President of Laboratory Management and Operations George Rice at Rockwell Intershynational George provided me with the compilation of these comments and I forwarded them to the US Army Material Development and Readiness Command (DARCOM) On behalf of the US Industrial segment of NCSL George and I were invited to attend a meeting at DARCOM Headquarters on April 7th and 8th 1982 Attending the meeting in addition to George and I were twelve representatives of various governmental agencies (including all of the services the Department of Defense and the Defense Logistics Command) and five representatives from other industrial associations (Aerospace Industrial Association National Securities Industrial Associashytion and Electronics Industrial Assocation) We made it clear that we were only representing the US Industrial Segment ofNCSL and not the NCSL as a whole

Although the meeting was to be on the proposed revision to the handbook it soon became apparent that the real problems were with MIL STD 45662 After considerable discussion the consensus of the group was that the standard should be revised and the following specific changes and language were agreed to

Para 561 to be dropped completely Para 562 be changed to be 56 and changed to read in essence 56 OUT OFTOLERANCE The contractor shall establish a procedure to evaluate the adequacy ofthe calibration system based on out-of-tolerance data generated from calibrating test and measuring equipment The procedure shall include but not be limited to adjustment of calibration frequency adequacy of the measurement and test instrument calibration procedures and measuring or test procedures The procedures shall specifically provide for the identification and prevention of use of any equipment which does not perform satisfactorily The procedure shall include the requirement for the calibration activity to notify the M amp TE user or the appropriate contractor element of significant out-of-tolerance conditions The contractors procedure shall define what constitutes a significant out-of-tolerance condition

In addition to these very important changes in MIL STD 45662 numerous changes in the proposed HDBK 52 revision were discussed and recommended Some were a direct result ofthe change to paragraph 56 Some changes were to ensure the handbook requirement was limited to the requirement in the MIL STD Others were clarification of the concepts and the applications listed in the handbook The majority of these came directly from comments of our NCs L members and we can be proud of our contribution in instituting revisions to these very important documents

The revision of MIL STD 45662 is now a project assigned to MICOM and I have been assured that the resulting revision will be coordinated with the NCSL Although the MIL STD 45662 has not yet been changed th e process has been started and we should be receiving the coordination copy in the very near future

Another area which I feel is extremely important to the Metrology community is the proposed revision to the NBS Organic Act The National Bureau of Standards has been the leader in measurement research and is the key to our National Measurement System However during the last decade the Bureau has been forced to make difficult decisions that sacrificed significant segments of measurement-related expertise because of additional tasks manshydated by Congress These new tasks were primarily in consumer safety building technology etc and required the Bureau to re-program personnel from measurement research and calibration activities The NCSL needs to stand up and be counted Therefore I am pleased to report that the response to the Advocacy Position Questionnaire on the

(continued inside cover)

__

NCSL NEWSLETTER VOL 22NO2 JUNE 1982

ISSN 01 94-5149 USPS 469-030

Publisher Nation al Conference of

Standards Laboratories cl o NCSL Secretariat National Bureau of Standards Boulder CO 80303 (303) 497-3787

Editor John L Min ck NCSL editor Hewlett-Packard Co 1501 Page Mill Road Palo Alto CA 94304 (415) 857-2060

The NCSL Ne wslet ter is pub lished quarshyterl y in Bould er Colo by th e National Con feren ce of Sta nda rds Lab oratories It is sen t to NCSL-rnember organ iza tions an d to a special listing of a ctivities and key personnel whose work is closely reshyla ted to th a t of NCSL The subscri ption price of $25 is incl uded in the annua l d il l S (3 copies per issue) Non -NCSL member subscri ptions a re a vai la ble fm 1 I I per year Mak e rem ittance to th e NCS Secretaria t

N CSL is a non-profit as socia tion of lab shyor a tori es and organ iza tions tha t mainshyta in or h ave an in te res t related to meashys urerne nt s ta ndards and ca li bra tion fac ilities

CHANGE OF ADDRESS

Send old and new address to NCSL Secretariat Na tional Burea u of St an shydards Boulder CO 80303 Postmaster Pl ea se send Form 3579 to N CSL Secret ashyria t Nation al Bureau of Standa rds CO 80303

Second class postage paid a t Boulder CO 80303 or at addi tional mailing office at P alo Alto CA 94303

BOARD OF REVIEWERS

Brian Bela nger

Dean Brungart

Douglas Doi

Pete Engla nd

Hartwell Keith

Geo rge Rice

H Bryan Werner

middotArticl es and other it ems a ppearin g in th e NEWSLETTER express the views of a ut hors and con tribu to rs a nd ar e not n ecessarily those of th e Editor or th e Nationa l Con fere nce St andards Laboratcries

TAB E OF CO NTENTS

THE 1982 NCSL ANNUAL CONFERENCE _ 3 HIGHLIGHTS OF THE NCSL BOARD MEETING _ 4 A CON CEPT IN TEST EQUIPMENT MANAGEMENT

HEIDNER amp CONNOLLY 11 PRODUCTIVITY fN THE CALIBRATTO N LAB - COLLIER 15 ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT

STANDARDS-BELL middot PETERSONS 19 NBS RESPONSE TO REGION 8 FEEDBACK SESSION

ON MEASUREMENT SERVICES 26 SEVERAL NEW PUBLICATIONS OF INTEREST TO

_

NCSLMEMBERS _ _ _ 28 NCSL NEWS NOTES _ 29 REGIONAL REPORTS 34 WELCOME TO OUR NEW NCSL MEMBERS _ 36 NCSL CALENDAR 40 NCSL ORGANIZATION _ 42

PRESIDENTS MESSAGE (cont d) NBS Organic Act Revision was overwhelmingly in fa vor of the NCSL desigshynating individuals to testify before th e Hou se Subcommittee

It is ess ential th at NCSL speak out as a n organization on issues of imporshytance to our memb ership NCSLs and other organizations inputs can be strengthened by letters an d resp onses from individual compa nies and I en courage each of you to write to the Congressiona l Subcommittee Advocacy positions by NCSL should be min imized and selected very carefully The selection task is not easy because ofthe broad interest s of our membership but I believe that ra ki g a position on issues cons ioered extremely imp ortant to the majority of our mem bersh ip is on of the resp onsi bilitie s of the NCSL Offi cers and Board of Directors

If you have strong opinions on this advocacy position please get in touch with me or any board member before the July board meeting since it will be a major ag enda item

Dean A Brungart President

EDITORS MESSAGE

Flirting with Danger Attending NCSL board meetings may be dangerous to your health For the

third time in several years NCSLs residence hotel had a night-time fire wh ich routed some ofour people who narrowly escaped with minor injury The fires occurred in Ottawa Gaithersburg and lastly Montreal Were certainly happy to hear everyone got out OK

John M inck -2shy

THE 1982 NCSL ANNUAL CONFERENCE NBS GAITHERSBURG

OCTOBER 4-7 1982

PLAN NOW TO ATTEND THIS YEAR S CONFERENCE

KEYNOTE SPEAKER

Mr Th omas Moss House Commi t t e e on Scie nce

amp Te chnolog y U S Congre s s

SPEAKERS ON CRITICAL CURRENT TOPICS

Large-scale Three Dimensional Measurements

Di gital amp Mic roproce s sor Sensor s

Rob ots

Von Klit zing Ef fect amp Re s i s tance St a nd ard s

Mass MAPs

Volt a ge Di vider Calibrations

Linewidth Meas ur ement Assurance

Humidity Meas ur ement s

Productivity

Pulse amp Waveform Metrol og y

Quality Circles

Army Me asurement Capabiliti e s WORKSHOPS FOR ON-THE-S POT DISCUSSI ONS WITH OTHER ORGANIZATIONS New International Temperature Scale

ANSI ASQC Ca l i b r a t i o n Standard Calibration Con t r o l Recall Inter val Anal ysi s Laborator y Accreditati onI oni zing Radiation Ca l i b r a t ion in Ramp D En vironmentResistance MAP Out-of-Tolerance Feedba c k France s Bureau National d e Metrol ogie Manufacturer s Traceability Documentation

ASK THE EXPERTS PANEL

Me chanical Measurements and Quality As surshyanc e

Electrical Measur ements amp Quality Assurshyanc e

Chemi cal Pharmaceutical amp Proc e s s I nd us t r y Mea surements

FOR MORE INFORMATION CONTACT

Brian Belanger Off ice o f Measurement Se r v ices NBS Gaithersbu r g MD 202 34

(301) 9 2 1 - 280 5

- 3shy

E NC EETI April 28-29 1982

Quebec City Canada

The opening of the meeting had been preceeded by a tour of Laval Universitys Measurement Science Laboratory

PRESIDENTS REPORT

Dean represented NCSL on a professional socishyetys panel at the 1982 Measurement Science Conference held in San Diego California on January 20th Dean used the NCSL slide show in his presentation to the attendees

An action item was assigned to Del Caldwell to develop an NCSL input to assist NBS in their proposed Calibration Initiatives to be preshysented to Congress for the 1984 budget

A draft c opy of the new Handbook 52 being proposed by Darcom was sent to NCSL members through the Secretariat requesting comments from the NCSL member sh i p These comments were compiled and presented to Darcom from the US industrial members of NCSL at a special MILshySTD-45662Handbook 52 meeting held at Darcom headquarters

The annual meeting of NCSL management and NBS management was held April 6 1982 In attendshyance were Dean Brungart John Lee Hartwell Keith and George Rice representing the NCSL and Dr Ernest Ambler Dr Peter Heydemann Dr John Lyons Dr Jack Hoffman Dr Cary Gravatt and Dr Brian Belanger representing NBS NCSL presented an update of the NCSLS status o n the Measurement Assurance programs Adjunct Training the Measurement Requirement Survey and the Research Asso~iate Proposal Also discussed was the NBS c a nc e l l a t i o n of seminars prematurely the need for more semishynars the proposed MAP seminar and the calishybration initiative being prepared by NBS

MIL-STD 45662 Meeting - See Presidents Messhysage (page I )

EXECUTIVE VICE PRESIDENTS REPORT - Hartwell Keith

Har twell reviewed Ron Kidd s draft and Al Kohlers formal draft on advocacy position status for NCSL Hartwell also reviewed and commented on the Laboratory Managers Guideshybook

PAST PRESIDENTS REPORT - John Lee

The Nominating Committee has been established and the proposed slate of nominees for the Board of Directors for 1983 has been develshyoped The names of those selected will be mailed to the membership by July I 1982 as required The final ballot will be in the mail to the member ship by August I 1982

The William A Wildhack Advisory Panel is in the pr o cess of being f ormed Nominations are being solicited

SECRETARYS REPORT - Selwyn Smith

The Secretary reported that during the first quarter of 1982 the NCSL welcomed 25 new members This places the present membership at 512

TREASURERS REPORT - Gary Davidson

The Treasurer reports that the following acshytions were taken during the first quarter

Processed IRS Form 990 Return of Organization Exempt from Income Tax for period 1018 0 to 93081

Received IRS approval for change in FY acshycounting period to the CY accounting period

A mot ion was made seconded and passed to create a by-law whereby the ability of the President and Treasurer to pledge NCSL funds for any loan shall require the unanimous apshyproval of the Executive Committee

SPONSORS DELEGATE - Brian Belanger

Brian Belanger presented the Sponsors Deleshygate Report in the absence of Bascom Birmingshyham

Over the last several weeks Dr Ambler has been conducting a calibration review at NBS He has asked for inputs from all the division chiefs to summarize the quality o f calibrashyt ions turn-around time and other subj ects affecting the course of calibration The quality of calibrations was spec ifically

-4shy

Board Meeting

studied One important phase was to have a standard procedure to notify a customer of the arrival of his standard at the NBS The Calibration Advisory Group is working on this problem

There is a new i ssue of Special publi cationshySP250 about ready for printing It should be noted that there are two categories of ser shyvices o f f e r e d The first is calibrations and the s econd is special tests The phase out of some seldom-used s ervices will be made only after due announcement

The MAP Handbook draft ve r sion i s nearing completion and after typing will b e sUbmitted to the reviewe rs for comment

It is planned to present th e A t r a i n i n g course during the later par t o f 9 8 2 a t some location in California

SECRETARI AT S REPORT - Ken Ar ms tr o ng

Ken report ed t hat as a r e s u lt o f th e i ncrease of dues thi s y e a r the c o s t o f proces sing a new member i n t o NCSL d o e s not e x c e e d t h e c ost of the fi rs t yea r s dues The number of members who dr op o u t and t he n r e join the reby causing the i ssuance o f new plaques and c e r t i f i c a t e s (with the accompany ing cost) is minimal and need not be c o nsidered at this time

Review of the c omp l e me n t a r y sUbscription list is being undertaken by Ken and Dean Brungart Any inputs from th e BOD should be made at thi s time

Th e Training Aid Library i s in be t t e r shape than it has ever be e n thanks t o the h e l p of a number of people

In an effort to handle the problem concerning non-members who should receive NCSL mailings andor correspondence Ken has elected to comshypar e the names on the NCSL rolls the BOD and t he master mailing list on a periodic basis

VICE PRESIDENT I S REPORT COMMUNICATIONS amp MARKETING - Pete England

Pete presen ted for approval the charters of two new c ommitte es which were created at the January Board meeting The first committee is Publicity who se b a s i c job is to bring the name o f the NCSL to the forefront through the use o f various media The second c o mmi t t e e is Membership Promotion who will be r esponsible f o r d e veloping an active NCSL membership proshymot ion p r og r a m

A motion was made s econded and passed that members o f NCSL who are metrology c onsultants may be listed in the NCSL Directory as such

An action item was given to Pete England t o review the bylaws f or update incorporating all the new by l a ws and to publish a new issue of the NCSL bylaws

A suggestion was made by Bryan Werner that the NCSL should take a more active role in pubshylicizing NCSL at trade shows The discussion that followed brought t o light the excessive co s t associated with trade shows and that such cost could not be borne by NCSL

Newsletter - J ohn Minck John reports that the March issue was mailed March 23-26 It was a heavy issue wi t h the last of the 1981 Co nshyf erence paper s Sec o nd class rates went up again but it still r emains a good deal 1426 copies at $15100 o r about 105 cents each

Information and Directory Committee - Ralph Bertermann Ralph announced that David Duff of Eli Lilly amp Company has agreed to join the Informati on and Directory Committee

Recommended Practices - Al Kohler Al has c ompl eted an action item to publi sh a comshymittee article in the Newsletter with a listshying of c urrently a vailable recommended pracshytices for o u r new er and potential new members

Al reported that his committee is preparing the f i na l document en ti tled NCSL Advocacy Position Guidelines

VI CE PRESIDENT I S REPORT - LAB MANAGEMENT amp

OPERATION - George Ri c e

Cali bration Systems Management - Bob Guibord In c onsideration o f the impor tance of this committee and Bobs inability to devote the t i me to it that it deserves Bob Guibord anshynounced that he must resign as Chairman George Rice stated that a s soon as a new chairman is appointed to the committee t h e committee will initiate a new survey on intershyv a l s and interval adjustment

Measurement Assurance - Laurel Auxier NCSL member organi zations continue t o show a great deal of interest in the MAPs and reports the following

Three regional vol tage MAPs are in v ar ious stages The Gage Bl ock MAP is progressing v ery slowly The Reverse Re s i s t a n c e Pilot MAP i s in Phas e II Groups in wash ington a nd Texas are interested in starting a MAP

-5shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

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Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

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Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

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A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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NCSL NEWSLETTER VOL 22NO2 JUNE 1982

ISSN 01 94-5149 USPS 469-030

Publisher Nation al Conference of

Standards Laboratories cl o NCSL Secretariat National Bureau of Standards Boulder CO 80303 (303) 497-3787

Editor John L Min ck NCSL editor Hewlett-Packard Co 1501 Page Mill Road Palo Alto CA 94304 (415) 857-2060

The NCSL Ne wslet ter is pub lished quarshyterl y in Bould er Colo by th e National Con feren ce of Sta nda rds Lab oratories It is sen t to NCSL-rnember organ iza tions an d to a special listing of a ctivities and key personnel whose work is closely reshyla ted to th a t of NCSL The subscri ption price of $25 is incl uded in the annua l d il l S (3 copies per issue) Non -NCSL member subscri ptions a re a vai la ble fm 1 I I per year Mak e rem ittance to th e NCS Secretaria t

N CSL is a non-profit as socia tion of lab shyor a tori es and organ iza tions tha t mainshyta in or h ave an in te res t related to meashys urerne nt s ta ndards and ca li bra tion fac ilities

CHANGE OF ADDRESS

Send old and new address to NCSL Secretariat Na tional Burea u of St an shydards Boulder CO 80303 Postmaster Pl ea se send Form 3579 to N CSL Secret ashyria t Nation al Bureau of Standa rds CO 80303

Second class postage paid a t Boulder CO 80303 or at addi tional mailing office at P alo Alto CA 94303

BOARD OF REVIEWERS

Brian Bela nger

Dean Brungart

Douglas Doi

Pete Engla nd

Hartwell Keith

Geo rge Rice

H Bryan Werner

middotArticl es and other it ems a ppearin g in th e NEWSLETTER express the views of a ut hors and con tribu to rs a nd ar e not n ecessarily those of th e Editor or th e Nationa l Con fere nce St andards Laboratcries

TAB E OF CO NTENTS

THE 1982 NCSL ANNUAL CONFERENCE _ 3 HIGHLIGHTS OF THE NCSL BOARD MEETING _ 4 A CON CEPT IN TEST EQUIPMENT MANAGEMENT

HEIDNER amp CONNOLLY 11 PRODUCTIVITY fN THE CALIBRATTO N LAB - COLLIER 15 ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT

STANDARDS-BELL middot PETERSONS 19 NBS RESPONSE TO REGION 8 FEEDBACK SESSION

ON MEASUREMENT SERVICES 26 SEVERAL NEW PUBLICATIONS OF INTEREST TO

_

NCSLMEMBERS _ _ _ 28 NCSL NEWS NOTES _ 29 REGIONAL REPORTS 34 WELCOME TO OUR NEW NCSL MEMBERS _ 36 NCSL CALENDAR 40 NCSL ORGANIZATION _ 42

PRESIDENTS MESSAGE (cont d) NBS Organic Act Revision was overwhelmingly in fa vor of the NCSL desigshynating individuals to testify before th e Hou se Subcommittee

It is ess ential th at NCSL speak out as a n organization on issues of imporshytance to our memb ership NCSLs and other organizations inputs can be strengthened by letters an d resp onses from individual compa nies and I en courage each of you to write to the Congressiona l Subcommittee Advocacy positions by NCSL should be min imized and selected very carefully The selection task is not easy because ofthe broad interest s of our membership but I believe that ra ki g a position on issues cons ioered extremely imp ortant to the majority of our mem bersh ip is on of the resp onsi bilitie s of the NCSL Offi cers and Board of Directors

If you have strong opinions on this advocacy position please get in touch with me or any board member before the July board meeting since it will be a major ag enda item

Dean A Brungart President

EDITORS MESSAGE

Flirting with Danger Attending NCSL board meetings may be dangerous to your health For the

third time in several years NCSLs residence hotel had a night-time fire wh ich routed some ofour people who narrowly escaped with minor injury The fires occurred in Ottawa Gaithersburg and lastly Montreal Were certainly happy to hear everyone got out OK

John M inck -2shy

THE 1982 NCSL ANNUAL CONFERENCE NBS GAITHERSBURG

OCTOBER 4-7 1982

PLAN NOW TO ATTEND THIS YEAR S CONFERENCE

KEYNOTE SPEAKER

Mr Th omas Moss House Commi t t e e on Scie nce

amp Te chnolog y U S Congre s s

SPEAKERS ON CRITICAL CURRENT TOPICS

Large-scale Three Dimensional Measurements

Di gital amp Mic roproce s sor Sensor s

Rob ots

Von Klit zing Ef fect amp Re s i s tance St a nd ard s

Mass MAPs

Volt a ge Di vider Calibrations

Linewidth Meas ur ement Assurance

Humidity Meas ur ement s

Productivity

Pulse amp Waveform Metrol og y

Quality Circles

Army Me asurement Capabiliti e s WORKSHOPS FOR ON-THE-S POT DISCUSSI ONS WITH OTHER ORGANIZATIONS New International Temperature Scale

ANSI ASQC Ca l i b r a t i o n Standard Calibration Con t r o l Recall Inter val Anal ysi s Laborator y Accreditati onI oni zing Radiation Ca l i b r a t ion in Ramp D En vironmentResistance MAP Out-of-Tolerance Feedba c k France s Bureau National d e Metrol ogie Manufacturer s Traceability Documentation

ASK THE EXPERTS PANEL

Me chanical Measurements and Quality As surshyanc e

Electrical Measur ements amp Quality Assurshyanc e

Chemi cal Pharmaceutical amp Proc e s s I nd us t r y Mea surements

FOR MORE INFORMATION CONTACT

Brian Belanger Off ice o f Measurement Se r v ices NBS Gaithersbu r g MD 202 34

(301) 9 2 1 - 280 5

- 3shy

E NC EETI April 28-29 1982

Quebec City Canada

The opening of the meeting had been preceeded by a tour of Laval Universitys Measurement Science Laboratory

PRESIDENTS REPORT

Dean represented NCSL on a professional socishyetys panel at the 1982 Measurement Science Conference held in San Diego California on January 20th Dean used the NCSL slide show in his presentation to the attendees

An action item was assigned to Del Caldwell to develop an NCSL input to assist NBS in their proposed Calibration Initiatives to be preshysented to Congress for the 1984 budget

A draft c opy of the new Handbook 52 being proposed by Darcom was sent to NCSL members through the Secretariat requesting comments from the NCSL member sh i p These comments were compiled and presented to Darcom from the US industrial members of NCSL at a special MILshySTD-45662Handbook 52 meeting held at Darcom headquarters

The annual meeting of NCSL management and NBS management was held April 6 1982 In attendshyance were Dean Brungart John Lee Hartwell Keith and George Rice representing the NCSL and Dr Ernest Ambler Dr Peter Heydemann Dr John Lyons Dr Jack Hoffman Dr Cary Gravatt and Dr Brian Belanger representing NBS NCSL presented an update of the NCSLS status o n the Measurement Assurance programs Adjunct Training the Measurement Requirement Survey and the Research Asso~iate Proposal Also discussed was the NBS c a nc e l l a t i o n of seminars prematurely the need for more semishynars the proposed MAP seminar and the calishybration initiative being prepared by NBS

MIL-STD 45662 Meeting - See Presidents Messhysage (page I )

EXECUTIVE VICE PRESIDENTS REPORT - Hartwell Keith

Har twell reviewed Ron Kidd s draft and Al Kohlers formal draft on advocacy position status for NCSL Hartwell also reviewed and commented on the Laboratory Managers Guideshybook

PAST PRESIDENTS REPORT - John Lee

The Nominating Committee has been established and the proposed slate of nominees for the Board of Directors for 1983 has been develshyoped The names of those selected will be mailed to the membership by July I 1982 as required The final ballot will be in the mail to the member ship by August I 1982

The William A Wildhack Advisory Panel is in the pr o cess of being f ormed Nominations are being solicited

SECRETARYS REPORT - Selwyn Smith

The Secretary reported that during the first quarter of 1982 the NCSL welcomed 25 new members This places the present membership at 512

TREASURERS REPORT - Gary Davidson

The Treasurer reports that the following acshytions were taken during the first quarter

Processed IRS Form 990 Return of Organization Exempt from Income Tax for period 1018 0 to 93081

Received IRS approval for change in FY acshycounting period to the CY accounting period

A mot ion was made seconded and passed to create a by-law whereby the ability of the President and Treasurer to pledge NCSL funds for any loan shall require the unanimous apshyproval of the Executive Committee

SPONSORS DELEGATE - Brian Belanger

Brian Belanger presented the Sponsors Deleshygate Report in the absence of Bascom Birmingshyham

Over the last several weeks Dr Ambler has been conducting a calibration review at NBS He has asked for inputs from all the division chiefs to summarize the quality o f calibrashyt ions turn-around time and other subj ects affecting the course of calibration The quality of calibrations was spec ifically

-4shy

Board Meeting

studied One important phase was to have a standard procedure to notify a customer of the arrival of his standard at the NBS The Calibration Advisory Group is working on this problem

There is a new i ssue of Special publi cationshySP250 about ready for printing It should be noted that there are two categories of ser shyvices o f f e r e d The first is calibrations and the s econd is special tests The phase out of some seldom-used s ervices will be made only after due announcement

The MAP Handbook draft ve r sion i s nearing completion and after typing will b e sUbmitted to the reviewe rs for comment

It is planned to present th e A t r a i n i n g course during the later par t o f 9 8 2 a t some location in California

SECRETARI AT S REPORT - Ken Ar ms tr o ng

Ken report ed t hat as a r e s u lt o f th e i ncrease of dues thi s y e a r the c o s t o f proces sing a new member i n t o NCSL d o e s not e x c e e d t h e c ost of the fi rs t yea r s dues The number of members who dr op o u t and t he n r e join the reby causing the i ssuance o f new plaques and c e r t i f i c a t e s (with the accompany ing cost) is minimal and need not be c o nsidered at this time

Review of the c omp l e me n t a r y sUbscription list is being undertaken by Ken and Dean Brungart Any inputs from th e BOD should be made at thi s time

Th e Training Aid Library i s in be t t e r shape than it has ever be e n thanks t o the h e l p of a number of people

In an effort to handle the problem concerning non-members who should receive NCSL mailings andor correspondence Ken has elected to comshypar e the names on the NCSL rolls the BOD and t he master mailing list on a periodic basis

VICE PRESIDENT I S REPORT COMMUNICATIONS amp MARKETING - Pete England

Pete presen ted for approval the charters of two new c ommitte es which were created at the January Board meeting The first committee is Publicity who se b a s i c job is to bring the name o f the NCSL to the forefront through the use o f various media The second c o mmi t t e e is Membership Promotion who will be r esponsible f o r d e veloping an active NCSL membership proshymot ion p r og r a m

A motion was made s econded and passed that members o f NCSL who are metrology c onsultants may be listed in the NCSL Directory as such

An action item was given to Pete England t o review the bylaws f or update incorporating all the new by l a ws and to publish a new issue of the NCSL bylaws

A suggestion was made by Bryan Werner that the NCSL should take a more active role in pubshylicizing NCSL at trade shows The discussion that followed brought t o light the excessive co s t associated with trade shows and that such cost could not be borne by NCSL

Newsletter - J ohn Minck John reports that the March issue was mailed March 23-26 It was a heavy issue wi t h the last of the 1981 Co nshyf erence paper s Sec o nd class rates went up again but it still r emains a good deal 1426 copies at $15100 o r about 105 cents each

Information and Directory Committee - Ralph Bertermann Ralph announced that David Duff of Eli Lilly amp Company has agreed to join the Informati on and Directory Committee

Recommended Practices - Al Kohler Al has c ompl eted an action item to publi sh a comshymittee article in the Newsletter with a listshying of c urrently a vailable recommended pracshytices for o u r new er and potential new members

Al reported that his committee is preparing the f i na l document en ti tled NCSL Advocacy Position Guidelines

VI CE PRESIDENT I S REPORT - LAB MANAGEMENT amp

OPERATION - George Ri c e

Cali bration Systems Management - Bob Guibord In c onsideration o f the impor tance of this committee and Bobs inability to devote the t i me to it that it deserves Bob Guibord anshynounced that he must resign as Chairman George Rice stated that a s soon as a new chairman is appointed to the committee t h e committee will initiate a new survey on intershyv a l s and interval adjustment

Measurement Assurance - Laurel Auxier NCSL member organi zations continue t o show a great deal of interest in the MAPs and reports the following

Three regional vol tage MAPs are in v ar ious stages The Gage Bl ock MAP is progressing v ery slowly The Reverse Re s i s t a n c e Pilot MAP i s in Phas e II Groups in wash ington a nd Texas are interested in starting a MAP

-5shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

-8shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

THE 1982 NCSL ANNUAL CONFERENCE NBS GAITHERSBURG

OCTOBER 4-7 1982

PLAN NOW TO ATTEND THIS YEAR S CONFERENCE

KEYNOTE SPEAKER

Mr Th omas Moss House Commi t t e e on Scie nce

amp Te chnolog y U S Congre s s

SPEAKERS ON CRITICAL CURRENT TOPICS

Large-scale Three Dimensional Measurements

Di gital amp Mic roproce s sor Sensor s

Rob ots

Von Klit zing Ef fect amp Re s i s tance St a nd ard s

Mass MAPs

Volt a ge Di vider Calibrations

Linewidth Meas ur ement Assurance

Humidity Meas ur ement s

Productivity

Pulse amp Waveform Metrol og y

Quality Circles

Army Me asurement Capabiliti e s WORKSHOPS FOR ON-THE-S POT DISCUSSI ONS WITH OTHER ORGANIZATIONS New International Temperature Scale

ANSI ASQC Ca l i b r a t i o n Standard Calibration Con t r o l Recall Inter val Anal ysi s Laborator y Accreditati onI oni zing Radiation Ca l i b r a t ion in Ramp D En vironmentResistance MAP Out-of-Tolerance Feedba c k France s Bureau National d e Metrol ogie Manufacturer s Traceability Documentation

ASK THE EXPERTS PANEL

Me chanical Measurements and Quality As surshyanc e

Electrical Measur ements amp Quality Assurshyanc e

Chemi cal Pharmaceutical amp Proc e s s I nd us t r y Mea surements

FOR MORE INFORMATION CONTACT

Brian Belanger Off ice o f Measurement Se r v ices NBS Gaithersbu r g MD 202 34

(301) 9 2 1 - 280 5

- 3shy

E NC EETI April 28-29 1982

Quebec City Canada

The opening of the meeting had been preceeded by a tour of Laval Universitys Measurement Science Laboratory

PRESIDENTS REPORT

Dean represented NCSL on a professional socishyetys panel at the 1982 Measurement Science Conference held in San Diego California on January 20th Dean used the NCSL slide show in his presentation to the attendees

An action item was assigned to Del Caldwell to develop an NCSL input to assist NBS in their proposed Calibration Initiatives to be preshysented to Congress for the 1984 budget

A draft c opy of the new Handbook 52 being proposed by Darcom was sent to NCSL members through the Secretariat requesting comments from the NCSL member sh i p These comments were compiled and presented to Darcom from the US industrial members of NCSL at a special MILshySTD-45662Handbook 52 meeting held at Darcom headquarters

The annual meeting of NCSL management and NBS management was held April 6 1982 In attendshyance were Dean Brungart John Lee Hartwell Keith and George Rice representing the NCSL and Dr Ernest Ambler Dr Peter Heydemann Dr John Lyons Dr Jack Hoffman Dr Cary Gravatt and Dr Brian Belanger representing NBS NCSL presented an update of the NCSLS status o n the Measurement Assurance programs Adjunct Training the Measurement Requirement Survey and the Research Asso~iate Proposal Also discussed was the NBS c a nc e l l a t i o n of seminars prematurely the need for more semishynars the proposed MAP seminar and the calishybration initiative being prepared by NBS

MIL-STD 45662 Meeting - See Presidents Messhysage (page I )

EXECUTIVE VICE PRESIDENTS REPORT - Hartwell Keith

Har twell reviewed Ron Kidd s draft and Al Kohlers formal draft on advocacy position status for NCSL Hartwell also reviewed and commented on the Laboratory Managers Guideshybook

PAST PRESIDENTS REPORT - John Lee

The Nominating Committee has been established and the proposed slate of nominees for the Board of Directors for 1983 has been develshyoped The names of those selected will be mailed to the membership by July I 1982 as required The final ballot will be in the mail to the member ship by August I 1982

The William A Wildhack Advisory Panel is in the pr o cess of being f ormed Nominations are being solicited

SECRETARYS REPORT - Selwyn Smith

The Secretary reported that during the first quarter of 1982 the NCSL welcomed 25 new members This places the present membership at 512

TREASURERS REPORT - Gary Davidson

The Treasurer reports that the following acshytions were taken during the first quarter

Processed IRS Form 990 Return of Organization Exempt from Income Tax for period 1018 0 to 93081

Received IRS approval for change in FY acshycounting period to the CY accounting period

A mot ion was made seconded and passed to create a by-law whereby the ability of the President and Treasurer to pledge NCSL funds for any loan shall require the unanimous apshyproval of the Executive Committee

SPONSORS DELEGATE - Brian Belanger

Brian Belanger presented the Sponsors Deleshygate Report in the absence of Bascom Birmingshyham

Over the last several weeks Dr Ambler has been conducting a calibration review at NBS He has asked for inputs from all the division chiefs to summarize the quality o f calibrashyt ions turn-around time and other subj ects affecting the course of calibration The quality of calibrations was spec ifically

-4shy

Board Meeting

studied One important phase was to have a standard procedure to notify a customer of the arrival of his standard at the NBS The Calibration Advisory Group is working on this problem

There is a new i ssue of Special publi cationshySP250 about ready for printing It should be noted that there are two categories of ser shyvices o f f e r e d The first is calibrations and the s econd is special tests The phase out of some seldom-used s ervices will be made only after due announcement

The MAP Handbook draft ve r sion i s nearing completion and after typing will b e sUbmitted to the reviewe rs for comment

It is planned to present th e A t r a i n i n g course during the later par t o f 9 8 2 a t some location in California

SECRETARI AT S REPORT - Ken Ar ms tr o ng

Ken report ed t hat as a r e s u lt o f th e i ncrease of dues thi s y e a r the c o s t o f proces sing a new member i n t o NCSL d o e s not e x c e e d t h e c ost of the fi rs t yea r s dues The number of members who dr op o u t and t he n r e join the reby causing the i ssuance o f new plaques and c e r t i f i c a t e s (with the accompany ing cost) is minimal and need not be c o nsidered at this time

Review of the c omp l e me n t a r y sUbscription list is being undertaken by Ken and Dean Brungart Any inputs from th e BOD should be made at thi s time

Th e Training Aid Library i s in be t t e r shape than it has ever be e n thanks t o the h e l p of a number of people

In an effort to handle the problem concerning non-members who should receive NCSL mailings andor correspondence Ken has elected to comshypar e the names on the NCSL rolls the BOD and t he master mailing list on a periodic basis

VICE PRESIDENT I S REPORT COMMUNICATIONS amp MARKETING - Pete England

Pete presen ted for approval the charters of two new c ommitte es which were created at the January Board meeting The first committee is Publicity who se b a s i c job is to bring the name o f the NCSL to the forefront through the use o f various media The second c o mmi t t e e is Membership Promotion who will be r esponsible f o r d e veloping an active NCSL membership proshymot ion p r og r a m

A motion was made s econded and passed that members o f NCSL who are metrology c onsultants may be listed in the NCSL Directory as such

An action item was given to Pete England t o review the bylaws f or update incorporating all the new by l a ws and to publish a new issue of the NCSL bylaws

A suggestion was made by Bryan Werner that the NCSL should take a more active role in pubshylicizing NCSL at trade shows The discussion that followed brought t o light the excessive co s t associated with trade shows and that such cost could not be borne by NCSL

Newsletter - J ohn Minck John reports that the March issue was mailed March 23-26 It was a heavy issue wi t h the last of the 1981 Co nshyf erence paper s Sec o nd class rates went up again but it still r emains a good deal 1426 copies at $15100 o r about 105 cents each

Information and Directory Committee - Ralph Bertermann Ralph announced that David Duff of Eli Lilly amp Company has agreed to join the Informati on and Directory Committee

Recommended Practices - Al Kohler Al has c ompl eted an action item to publi sh a comshymittee article in the Newsletter with a listshying of c urrently a vailable recommended pracshytices for o u r new er and potential new members

Al reported that his committee is preparing the f i na l document en ti tled NCSL Advocacy Position Guidelines

VI CE PRESIDENT I S REPORT - LAB MANAGEMENT amp

OPERATION - George Ri c e

Cali bration Systems Management - Bob Guibord In c onsideration o f the impor tance of this committee and Bobs inability to devote the t i me to it that it deserves Bob Guibord anshynounced that he must resign as Chairman George Rice stated that a s soon as a new chairman is appointed to the committee t h e committee will initiate a new survey on intershyv a l s and interval adjustment

Measurement Assurance - Laurel Auxier NCSL member organi zations continue t o show a great deal of interest in the MAPs and reports the following

Three regional vol tage MAPs are in v ar ious stages The Gage Bl ock MAP is progressing v ery slowly The Reverse Re s i s t a n c e Pilot MAP i s in Phas e II Groups in wash ington a nd Texas are interested in starting a MAP

-5shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

-8shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

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r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

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TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

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industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

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c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

E NC EETI April 28-29 1982

Quebec City Canada

The opening of the meeting had been preceeded by a tour of Laval Universitys Measurement Science Laboratory

PRESIDENTS REPORT

Dean represented NCSL on a professional socishyetys panel at the 1982 Measurement Science Conference held in San Diego California on January 20th Dean used the NCSL slide show in his presentation to the attendees

An action item was assigned to Del Caldwell to develop an NCSL input to assist NBS in their proposed Calibration Initiatives to be preshysented to Congress for the 1984 budget

A draft c opy of the new Handbook 52 being proposed by Darcom was sent to NCSL members through the Secretariat requesting comments from the NCSL member sh i p These comments were compiled and presented to Darcom from the US industrial members of NCSL at a special MILshySTD-45662Handbook 52 meeting held at Darcom headquarters

The annual meeting of NCSL management and NBS management was held April 6 1982 In attendshyance were Dean Brungart John Lee Hartwell Keith and George Rice representing the NCSL and Dr Ernest Ambler Dr Peter Heydemann Dr John Lyons Dr Jack Hoffman Dr Cary Gravatt and Dr Brian Belanger representing NBS NCSL presented an update of the NCSLS status o n the Measurement Assurance programs Adjunct Training the Measurement Requirement Survey and the Research Asso~iate Proposal Also discussed was the NBS c a nc e l l a t i o n of seminars prematurely the need for more semishynars the proposed MAP seminar and the calishybration initiative being prepared by NBS

MIL-STD 45662 Meeting - See Presidents Messhysage (page I )

EXECUTIVE VICE PRESIDENTS REPORT - Hartwell Keith

Har twell reviewed Ron Kidd s draft and Al Kohlers formal draft on advocacy position status for NCSL Hartwell also reviewed and commented on the Laboratory Managers Guideshybook

PAST PRESIDENTS REPORT - John Lee

The Nominating Committee has been established and the proposed slate of nominees for the Board of Directors for 1983 has been develshyoped The names of those selected will be mailed to the membership by July I 1982 as required The final ballot will be in the mail to the member ship by August I 1982

The William A Wildhack Advisory Panel is in the pr o cess of being f ormed Nominations are being solicited

SECRETARYS REPORT - Selwyn Smith

The Secretary reported that during the first quarter of 1982 the NCSL welcomed 25 new members This places the present membership at 512

TREASURERS REPORT - Gary Davidson

The Treasurer reports that the following acshytions were taken during the first quarter

Processed IRS Form 990 Return of Organization Exempt from Income Tax for period 1018 0 to 93081

Received IRS approval for change in FY acshycounting period to the CY accounting period

A mot ion was made seconded and passed to create a by-law whereby the ability of the President and Treasurer to pledge NCSL funds for any loan shall require the unanimous apshyproval of the Executive Committee

SPONSORS DELEGATE - Brian Belanger

Brian Belanger presented the Sponsors Deleshygate Report in the absence of Bascom Birmingshyham

Over the last several weeks Dr Ambler has been conducting a calibration review at NBS He has asked for inputs from all the division chiefs to summarize the quality o f calibrashyt ions turn-around time and other subj ects affecting the course of calibration The quality of calibrations was spec ifically

-4shy

Board Meeting

studied One important phase was to have a standard procedure to notify a customer of the arrival of his standard at the NBS The Calibration Advisory Group is working on this problem

There is a new i ssue of Special publi cationshySP250 about ready for printing It should be noted that there are two categories of ser shyvices o f f e r e d The first is calibrations and the s econd is special tests The phase out of some seldom-used s ervices will be made only after due announcement

The MAP Handbook draft ve r sion i s nearing completion and after typing will b e sUbmitted to the reviewe rs for comment

It is planned to present th e A t r a i n i n g course during the later par t o f 9 8 2 a t some location in California

SECRETARI AT S REPORT - Ken Ar ms tr o ng

Ken report ed t hat as a r e s u lt o f th e i ncrease of dues thi s y e a r the c o s t o f proces sing a new member i n t o NCSL d o e s not e x c e e d t h e c ost of the fi rs t yea r s dues The number of members who dr op o u t and t he n r e join the reby causing the i ssuance o f new plaques and c e r t i f i c a t e s (with the accompany ing cost) is minimal and need not be c o nsidered at this time

Review of the c omp l e me n t a r y sUbscription list is being undertaken by Ken and Dean Brungart Any inputs from th e BOD should be made at thi s time

Th e Training Aid Library i s in be t t e r shape than it has ever be e n thanks t o the h e l p of a number of people

In an effort to handle the problem concerning non-members who should receive NCSL mailings andor correspondence Ken has elected to comshypar e the names on the NCSL rolls the BOD and t he master mailing list on a periodic basis

VICE PRESIDENT I S REPORT COMMUNICATIONS amp MARKETING - Pete England

Pete presen ted for approval the charters of two new c ommitte es which were created at the January Board meeting The first committee is Publicity who se b a s i c job is to bring the name o f the NCSL to the forefront through the use o f various media The second c o mmi t t e e is Membership Promotion who will be r esponsible f o r d e veloping an active NCSL membership proshymot ion p r og r a m

A motion was made s econded and passed that members o f NCSL who are metrology c onsultants may be listed in the NCSL Directory as such

An action item was given to Pete England t o review the bylaws f or update incorporating all the new by l a ws and to publish a new issue of the NCSL bylaws

A suggestion was made by Bryan Werner that the NCSL should take a more active role in pubshylicizing NCSL at trade shows The discussion that followed brought t o light the excessive co s t associated with trade shows and that such cost could not be borne by NCSL

Newsletter - J ohn Minck John reports that the March issue was mailed March 23-26 It was a heavy issue wi t h the last of the 1981 Co nshyf erence paper s Sec o nd class rates went up again but it still r emains a good deal 1426 copies at $15100 o r about 105 cents each

Information and Directory Committee - Ralph Bertermann Ralph announced that David Duff of Eli Lilly amp Company has agreed to join the Informati on and Directory Committee

Recommended Practices - Al Kohler Al has c ompl eted an action item to publi sh a comshymittee article in the Newsletter with a listshying of c urrently a vailable recommended pracshytices for o u r new er and potential new members

Al reported that his committee is preparing the f i na l document en ti tled NCSL Advocacy Position Guidelines

VI CE PRESIDENT I S REPORT - LAB MANAGEMENT amp

OPERATION - George Ri c e

Cali bration Systems Management - Bob Guibord In c onsideration o f the impor tance of this committee and Bobs inability to devote the t i me to it that it deserves Bob Guibord anshynounced that he must resign as Chairman George Rice stated that a s soon as a new chairman is appointed to the committee t h e committee will initiate a new survey on intershyv a l s and interval adjustment

Measurement Assurance - Laurel Auxier NCSL member organi zations continue t o show a great deal of interest in the MAPs and reports the following

Three regional vol tage MAPs are in v ar ious stages The Gage Bl ock MAP is progressing v ery slowly The Reverse Re s i s t a n c e Pilot MAP i s in Phas e II Groups in wash ington a nd Texas are interested in starting a MAP

-5shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

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Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

- 2 2 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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The Calibrat ion Ne ws l e tter i s orien t e d t o medic al calibration and t raining

CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Board Meeting

studied One important phase was to have a standard procedure to notify a customer of the arrival of his standard at the NBS The Calibration Advisory Group is working on this problem

There is a new i ssue of Special publi cationshySP250 about ready for printing It should be noted that there are two categories of ser shyvices o f f e r e d The first is calibrations and the s econd is special tests The phase out of some seldom-used s ervices will be made only after due announcement

The MAP Handbook draft ve r sion i s nearing completion and after typing will b e sUbmitted to the reviewe rs for comment

It is planned to present th e A t r a i n i n g course during the later par t o f 9 8 2 a t some location in California

SECRETARI AT S REPORT - Ken Ar ms tr o ng

Ken report ed t hat as a r e s u lt o f th e i ncrease of dues thi s y e a r the c o s t o f proces sing a new member i n t o NCSL d o e s not e x c e e d t h e c ost of the fi rs t yea r s dues The number of members who dr op o u t and t he n r e join the reby causing the i ssuance o f new plaques and c e r t i f i c a t e s (with the accompany ing cost) is minimal and need not be c o nsidered at this time

Review of the c omp l e me n t a r y sUbscription list is being undertaken by Ken and Dean Brungart Any inputs from th e BOD should be made at thi s time

Th e Training Aid Library i s in be t t e r shape than it has ever be e n thanks t o the h e l p of a number of people

In an effort to handle the problem concerning non-members who should receive NCSL mailings andor correspondence Ken has elected to comshypar e the names on the NCSL rolls the BOD and t he master mailing list on a periodic basis

VICE PRESIDENT I S REPORT COMMUNICATIONS amp MARKETING - Pete England

Pete presen ted for approval the charters of two new c ommitte es which were created at the January Board meeting The first committee is Publicity who se b a s i c job is to bring the name o f the NCSL to the forefront through the use o f various media The second c o mmi t t e e is Membership Promotion who will be r esponsible f o r d e veloping an active NCSL membership proshymot ion p r og r a m

A motion was made s econded and passed that members o f NCSL who are metrology c onsultants may be listed in the NCSL Directory as such

An action item was given to Pete England t o review the bylaws f or update incorporating all the new by l a ws and to publish a new issue of the NCSL bylaws

A suggestion was made by Bryan Werner that the NCSL should take a more active role in pubshylicizing NCSL at trade shows The discussion that followed brought t o light the excessive co s t associated with trade shows and that such cost could not be borne by NCSL

Newsletter - J ohn Minck John reports that the March issue was mailed March 23-26 It was a heavy issue wi t h the last of the 1981 Co nshyf erence paper s Sec o nd class rates went up again but it still r emains a good deal 1426 copies at $15100 o r about 105 cents each

Information and Directory Committee - Ralph Bertermann Ralph announced that David Duff of Eli Lilly amp Company has agreed to join the Informati on and Directory Committee

Recommended Practices - Al Kohler Al has c ompl eted an action item to publi sh a comshymittee article in the Newsletter with a listshying of c urrently a vailable recommended pracshytices for o u r new er and potential new members

Al reported that his committee is preparing the f i na l document en ti tled NCSL Advocacy Position Guidelines

VI CE PRESIDENT I S REPORT - LAB MANAGEMENT amp

OPERATION - George Ri c e

Cali bration Systems Management - Bob Guibord In c onsideration o f the impor tance of this committee and Bobs inability to devote the t i me to it that it deserves Bob Guibord anshynounced that he must resign as Chairman George Rice stated that a s soon as a new chairman is appointed to the committee t h e committee will initiate a new survey on intershyv a l s and interval adjustment

Measurement Assurance - Laurel Auxier NCSL member organi zations continue t o show a great deal of interest in the MAPs and reports the following

Three regional vol tage MAPs are in v ar ious stages The Gage Bl ock MAP is progressing v ery slowly The Reverse Re s i s t a n c e Pilot MAP i s in Phas e II Groups in wash ington a nd Texas are interested in starting a MAP

-5shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

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Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

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Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

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A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Th e MAP Hand book has been further del ayed due t o a r e wr i t e of two chapters on statistics No new pub l i c a t i on date has be en given Problems c o n t i n ue to plague DC voltage MAPs Unreshyl i a b l e transport standards and extr emely long del ays bo t h in scheduling a MAP and receiving a final test-report after completion ar e prime detracters Problems identified in the participants l abor atories also cause delays however that is one of the purposes of a MAP and s ho u l d not necessaril y be consider ed negative

Product Design and Specifications - Dav id Hopping David reports that his committee is considering the following proj e cts

A questionnair e f or NCSL members to examine their next in strument purchased in light o f RP-3 and RP-5 and t o r espond to the questionshynaire stating how well the manufacturer comshyplies with the recommended practice

Co s t o f ownership t o invest igate the ways in whi ch designing for producibility can be tied t o or result i n minimizing th e cost of ownership

A possible NCSL award for the instrument that best embodie s those attributes that lead to a reduction in cost of own ership or t echnical paper that best illuminates the decision strategies or c on struct c o n tr ibutes to the understanding of the problem of reducing the cost of own ership

Automatic Test and Calibration - Don Tobey Don states that it has been his philosophy to decentralize the responsibilities and provide the ATE c a l i b ra t i o n c o mmu n i ty with point-ofshycontact for their specific needs He has asked his subcommittees to establish a s et of objec shytives to pr esent th e obj ectives with selected technic al papers a t the next c o n f e r e nc e a nd t o pr ovide t he NCSL with an over view of the s tructure and services of t he committees

MIL-Handbook 52 - George Rice George sta t ed that the NCSL input to the deliberations on MIL-HDBK-52 were extr emely important He asked for continued invol vement by members

This experience points to the urgency for the NCSL t o speak out o n issues which affect our membership To paraphrase if not now when If not us who

VI CE PRES IDENT S REPORT - MEASUREMENT REQUIREshyMENTS - Doug Doi

Nationa l Measurement Reguirements - Del Caldwell Del drafted a strawman paper on the National Measurement and Calibration Initi ashytive This is a mul tipl e indu s try associ ation

sponsorship of a project t o develop measur eshyment technology to meet the needs of the nashyt i on especially in th e ar eas o f defense international c o mpe t i t ion a nd t r ade and technology transfer t o the private sector Del will report on thi s s u b j e c t at the July meeting

To date 14 64 of the 198 2 National Measureshyment Re q u i r e me nt Survey questionnaires have been sent out NCSL membership has received 48 7 while 977 have gone to sel e cted c o mp a n i e s o n the NBS SP- 2 50 mailing list As of April 2 198 2 156 responses have been r e ceived The results of th e survey will be p u b l i s he d in the NCSL Ne wsl etter Survey r e sult s will also be mailed to the parti cipating compan i es Del reports that he has r e ceived numerous p h on e calls regarding the survey Key issue is NBS calibration t urn-around time Callers are also c o nc e r ne d that the results of th e sur vey will get attention of t o p management of NCSL a nd NBS

Bi omedi c al and Pha rmaceutical Metrolog y - Bi ll Fitzgerald A Biomedic al and Ph armaceuti c al Metrology Committe e meeting was held a t the Eli Lilly Company after the Region 5 meeting A first a nd s e cond revision to the dr aft guideline was discussed and handed out to committee memb ers for further review and comshyment Plans are to have a f i n a l draft guideshyline c omplete by end o f Jun e 198 2

Labor a t o r ~ Evaluation Commi t t e e - Ron Kidd Ron Ki da _nformed the Boa rd that there is an importa nt work shop o n the electr omagneti c LAP in Boulde r Co l o rado July 1 amp 2 1982 To pics to b e d i s c u s s e d a t th e workshop are

A Necessary materials protocol a nd docushymentation f o r a s s e s s i ng a l abor atorys performance

B Use of MAPs a s a profici ency test me c hshya n i s m

C Qual ifications of metrology t ech s a nd their supervisors

D Test methods

E Source of assessors for t his LAP a nd creshydentials or qualification which the assesshysors should possess

A workshop on labor atory accr editation is pl anned for t h i s y e ars c onferenc e NVLAP has been reorgani z ed und er t he Office of Prod uc t Standards Policy (OPS P ) with Dr Stanley War shaw as Dir ector This means that NVLAP is under NB S responsib ility

- 6shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

-8shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

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ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Board Meeting

Articl e s c oncerning NVLAP have been publ i shed in th e NCSL Ne ws l e t te r workshops hav e b e en conducted at t h e NCSL con f er en c e s and people h a ve s p o k e n about it yet it s t i l l does not r a i s e th e necessary interest in the people it wi l l e v e ntua lly affect

VICE PRESIDENTS REPORT - ADMINISTRAT I ON shyBryan Werner

Br y an stated ce rtain items in t h e March Ne wsshyletter s cove r a g e o f the last Boa r d meeting ar e causing some dif fi c ulty Th e s e ite ms whi l e fac t ua l we re no t modifi e d by e xp lan shya tor y re a s on ing th a t pr e ceded t hem a t the meeting At best they have c owe ac ross an embarr as sment t o s ome faith f u l ~C S L me mbe r s

Bryan suggests that we all be c o c c r ne d about se n s i tiv e matters in any r e p o r or c o mm un i c a shytion

Me etings a nd Progr a m - Moe Corr i g a n Mo e presented his late sc upd a t e of the Me e t i ngs a nd Pr og rams Anno u nce m n t Regio na l Me e t shyi ngs Sc hed u le a nd To p i c s f o r Di s c u s s i o n s c h e d u l e Upda t e s ar e b e i ng publ i s hed i n t he Newsl etter unde r NCS L Ca lend a r Regiona l Co shyor d i nato r s Di r ectors a nd Co mmi t t e e Memb e r s are con t inuin g t o fe ed info r ma t i o n a bout p r oshyg rams to t h is c o mmitte e

Hono r s a nd Awa rds - Hillary Ta f L Hillar y report s t h e f ollowi ng acti o n s

A Or d e r e d a nd di stributed NCSL l etterheads as rev ised at the Januar y Bo a rd Me eting

B Ordered a nd received a pl aqu e f or t h e Dir e c to r o f the Intern a ti o nal Re g i o n

C Prepar ed a response t o the Vi ce Presidents r e q ues t for a s tudy o f studen t encourageshyment programs f or metrolog y curriculums

The Honors and Awa r d s Commi t te e is l o ok ing for ideas and suggestions f or gifts a nd a wa r d s Cl i ff Koo p a nd Moe Cor rigan bo t h s en t in g if t s ug ge s t i o n s

Hill a r y s t a ted t hat it is imperative t hat g if t l ist a nd r e qu e s t f or ce r ti f i c ates t o be pr eshys e nted at t he 19 8 2 Co n fe r e nce be s u bmi t ted no later t han Ju ne I 1982 Be su r e a l l per t inen t informa t ion is i ncluded a nd c o r rec t ly spell ed i e na me compa ny a nd r e ason fo r th e awa rd

Educa t ion and Tra i ning - John Martin See Train i ng Informa tion on page 38

The Edu c a tion and Tr aining Commi tte e will hold a mee ting a t Lockheed in Sunnyvale Cali forshynia on Jul y 20th

REGIONAL REPORTS - DIRECTORS COORDI NATORS

Reg ion 1 - Ed Ne mer o f f Harry Haymes A reshygiona l meeting was held o n Apr i l 21 1 9 8 2 at Rayth eon-Way land in Wayland Maine Th i r ty shye i g h t members and guests were in a t t e nd ance fo r both the t e ch n i c al a nd bus i ne s s se s sio ns Th e p r i nc i p a l SUbjec t s we re hum i d i ty and its mea sureme nt c a l i b ra t i o n r e q uirement s f or 6- 12 a nd 7-1 2 digit DVM s and cert ificatio n requirement s a s p e r MI L-STD- 4 5 66 2

Regio n 2 - Ed Nemeroff Two me etings we r e h e l d i n Region 2 since the l ast Board meeting Th e fir st wa s on February 19 1 98 2 with 3 0 me mbers in a t t e nd a nce The main t opics of di s cu s sion c ove r e d th e Re g ion 2 MAPs progress the 1 98 2 Co nfe rence and the Handbook-52 wh i ch is under revi ew Probl ems have bec o me ev ident in the Vol tage MAP Di s cr epanci es have been n o te d for s ome participants a c c ording to a r eport fr om Norm Be leck i Th i s wi l l hav e t o be c le a red up before we c a n con t i nu e

The s eco nd me eting wa s hel d a t the Bu tl e r Sc ience Fa i r But ler Penn s ylvania

Reg i o n 3 - Two meeti ng s wer e p l anned for t h i s NCSL yea r Th e fir s t was he l d a t Coms a t La borato ries Cla rksbu r g Ma r yland on J a n shyua ry 28 1 98 2 Minutes o f thi s meet i ng we r e i nclud ed i n t he Marc h Ne wsle t te r Th e seco nd mee t i ng i s p lanned f o r J u ne and will be h eld i n t h e Richmond Vi rgi n ia ar e a

Cons i d e r a b le interest has bee n shown i n the Mobi le Au tomat e d Ca l i b r a tion Sy stem di s c ussed b y Wa l te r Owen s at t he Reg ion 3 Janu ar y meetshying To mak e t h is in formation av a i l a b le t o t h e NCSL membership an arti cl e wi l l be p r epa red descri bing th i s system for publication in the NCSL Newsletter

Region 4 shy

Re g i ona l wo r ks ho p The second Regi on 4 wor kshyshop o f 19 82 is s c h e d u l e d for Ju n e 1 5 1 982 a t Pa tri ck AFB Florida RCA will ho s t thi s wo rks ho p whi ch wi ll f e a tu re the f i rs t Ad junct Tr a ining Program i n t h i s r e gion

Mea s u r e men t Ass u r a nce Pr og r a m Th e r egional ma s s MAP has a n a d d i t i o na l p ar t i c i pan t Harris Co r po ra t ion has been a dded t o t he ori g inal grou p (Bi o ne t i c s GEDa ytona NASA KSC and Pa n Ame r ican) Da ta f r o m t he f i r s t se ries o f weighings i n p ar t i c i pa n t laboratori es h a ve bee n a n a lyze d a nd retur n ed t o the part i cip a nts ( 1 and 1 0 g ram weigh ts ) Testi ng of 1 00 gram

weight s by the P i vo t La bor a t or y (NASA KSC) is c o mple t e and t e sting of 1 k i ll o g r a m weigh ts is und erway Parti cipants have been pr o vided with li stings of t he TSS b asi c progr ams u s e d f o r d at a a na lys i s a nd c o n t ro l c ha r ts The p r oces s of c onverting thes e programs fo r runshyning o n HP 98 00 ma chines is behind sc he d u l e

-7shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

-8shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Board Meeting

Region 5 - Region 5 held their first meeting of 1982 (winter meeting) on Monday February 22 1982 at the Eli Lilly Company facilities in Indianapolis Indiana The summer meeting is scheduled for June 1982 at Rosemount Engishyneering in Minneapolis Minnesota

Region 6 - A Region 6 meeting was held on January 27 1982 at the Johnson Space Center Houston Texas The feature speaker was Dick Underwood of the Johnson Space Centers Techshynical Photography Division Dick gave us a very interesting presentation on Measurements taken through space light photography Through Mr Underwoods spectacular slide presentation he was able to take us around the world in 30 minutes and pinpoint with great detail areas allover the earth from outer space

Reg ion 6 MAPs During the next few months resistance MAP and gage block MAP are being investigated Both MAPs have been assigned a task leader to coordinate and organize their respective MAP activity

The current membership in Region 6 is 46 with 13 unpaid members

Region 7 - Carl Quinn Coordinator for Region 7 has announced the CY1982 schedule for reshygional meetings

July 21 - Su n ny v a l e Directors JUly 22 and

(precedes meeting in

23)

Board Carm

of el

November 18 - Sunnyvale

John Cox Lockheed Missiles and Space Company has been appointed as the Region 7 Delegate to the Meeting and Programs Committee

Region 8 - Rolf Schumacher Region 8 Coordishynator conducted a most successful seminar and workshop at the vacation Village Hotel Misshysion Bay San Diego on January 20th Would you believe 73 attendees

The next Region 8 meeting is scheduled for November 10th at Rochelle I s Restaurant and Convention Center

Region 9 - Dave Goodhead Region 9 held their first meeting of 1982 on Tuesday April 13 1982 at the Rockwell International Hanford Operations in Richland Washington Region 9 plans to hold at least one more meeting this year with an idea of rotating between Richshyland Portland and Seattle Twenty-two were in attendance on April 13 1982 Richland washington

Region 10 - Graham Cameron Some 8 new members have recently joined the International Region 5 of which are from Canada

Discussions have been held wi th several of the Canadian members concerning the selection of appropriate topics for our 1982 meeting The handling of artifacts such as standards and test equipment at the Canadian and United States border is a significant topic Imporshytation and exportation of equipment for sale and for temporary use (measurement assurance programs) will be discussed

The movement of electrically powered standards by commercial airlines and the extent of neshycessary electrical shielding to ensure airshycraft navigational equipment is not affected is another topic to be addressed Graham would appreciate learning from the Board what regushylations practices FAA or commercial airshylines apply

A planning meeting of interested Canadian memshybers and potential members will be held in the next few months to develop the agenda for the next Canadian meeting and discuss formation of a Canadian sector organization

The English language version of Frances Bureau National de Metrologie 35mm slide and audio tape Metrological Functions-Mechanshyics has been delivered to the Standards Council of Canada in Ottawa Graham Cameron thinks NCSL will find this audio-visual intershyesting and valuable Another package is available for electrical calibration chains

Several of you have expressed interest in the Uni ted Kingdom film Standards in Act ion 11

An attempt will be made shortly to obtain this on 34 video cassette format by contacting the British Calibration Service to determine best arrangements

1982 Conference - The arrangements for the 1982 Conference are proceeding on schedule We have reserved Smokey Glen Farm for Monday evening with the same entertainment as in 1980 The hotel and NBS conference facility arrangements have been made and confirmed There will be an International Region dinner meeting on Tuesday night

The first brochure was mailed several weeks ago The second and final brochure will be mailed this summer Moe Corrigan and Brian Belanger would welcome your suggestions Board members who wish details on the 1982 Conference should refer to the reports by the Conference Co-Chairmen

LIAISON DELEGATES REPORTS

GIDEP Metrology Commi t tee - Ph il Pa i nchaud A GIDEP meeting was held at GIDEP headquarters on AprilS 1982 A repeat meeting has been scheduled for April 29-30 1982 to be held in Virginia and at NBS Gaithersburg A workshop will be held November 9-11 1982 in Chicago

-8shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Boa rd Meeting

The hotel a nd NB S con fe r e nce facility arshyrangeme nts ha ve bee n ma de and con f i r me d There wi l l be an I n te r na t iona l Re g i o n din ner meeting on Tue sday night

The first b r oc h u r e was mail ed s eve r a l weeks ag o Th e sec ond and final b rochu re wi l l be mail ed thi s summer Moe Co r r ig an and Br i a n Bel a ng er wo ul d welcome y o ur sugge stions Board members who wi s h deta ils on t he 1982 Co nf e r e nce s ho ul d r efer t o the repo r t s by the Co n fe r e nce Co-Cha i r me n

LIA I SON DELEGATE S REPORTS

GIDEP Me trology Commi t t ee - Phil Pai nc h a ud A GI DEP meeting wa s held a ~ GTOEP headqu a r t e r s o n Ap ri lS 1 982 A r e pe a l me( tl lg h a s bee n sc h e d u led f or Apr i l 29 - 30 1 98 2 to b e he l d in Virg in ia and a t ~S Ga it e s u r q A wo r ksho p wi l l be held Nove mbe r 9- Ll 19a2 i n Chic a go

OI ML - Th e i n te r na i a n a l d o cume n t Pr i nci p les o fAs s u r a nc e o f Me r o l o g i c a l Co n t ro l ( 4shyd r a f t Feb r ua r y 198 1 ) is u nd e r g o i ng a ma j or e d i t ing a t ~S pe r Br i a n Belange r The ne x t stop wi ll b e t o se nd t h e edi t ed rev i sion to the pa r tic i p a ti ng cou n t r ies a nd the US committee fo r fur t her r ev iew a nd comme n t

Measureme nt Sc ience Con f e r e nce Dea n Br ungart The 1 98 2 Con f e re nce was h eld in San Di ego Californi a o n January 21 and 22 1982 Appr oxima tel y 28 0 attended t he Thursd a y s e s shysions and 30 0 attended the Friday s e s sion The confe re nce was cons i der ed a suc c e s s

The ne w 1 982-1 98 3 Board of Directors are

Ch a i r man of t he Board Bi l l Strnad 19 8 3 Con f e re nce Ch a i r ma n Rol and Vav ken SecretaryTr easur e r Da v e Buc k Di rector John Br ady

De an Brungart Che t Cr a ne John Sc hult z

Alte r na te Di rector Don Greb

ASQC - At t hi s writ ing t h e ASQC is await ing f inal a c ceptan c e o n be h a l f o f the Ea s tman Koda k Co mpa ny to a llow Mr Karl Spe i te l Chair shyman o f the ASQC Me tr ol og y Committee to act as Li ai s on Del e g a te t o NCSL

wh ich c a use d mainly a reor gani zatio n of the p r o pos e d text Ro lf Schumacher p l ans t o at shytend the ASQC Co unc i l and Standar d s Committe e meetings on May 2 1 982 in De t ro it Mi chigan Th e ASQC oc cupies the Secr etariat o f the ANS I Commi t tee z - l for Quality As s urance

OPEN AGENDA ITEMS

A Letter to the Ed i t o r s Col umn - Ed Nemeroff ~r e s e n t e ~ a sur v e y o n the liability i nvolved I n c a r ry Ing a s ec t i o n c a l led Le t te r s t o t he Editor Several p Ub l ishing a nd advertisi n g ag encies were c ontac t e d f o r p r o and con v i ews Th e ge neral conse ns us was Dont get i nvolvshyed A detai l of the report c a n be f ound in the Bo a rd of Directors repor ts A mot ion was mad e s econded and passed t hat it wi l l be t he pol i c y not t o ca r ry a Lette r t o the Editor c o l umn in the Newslette r

AS a lway s articl es tha t a re pr e s ented to the Ne wslette r f o r p u b l ica t ion whi ch the Ed i to r ma y d eem a s h a ving q uesti o nn abl e or con tro shyve rs i a l pUbl i c ation va lu e will c o n ti nue t o be for warded t o the Bo ard fo r d iscussion

Third Qua r t e r Bo a r d Meeti ng - The meeting will be held in Ca r mel Cal i f o rn i a i n Ju ly 1 98 2

NBS Or g an ic Ac t A q ue s tion na i r e on the Or shygani c Ac t was sent o u t fr om t he Se c r etariat s o f f ic e The Bo ard ur ges that the questionshynai r e be compl e t e d and s ent b a c k Or g a n i shyza t ion a l responses to the Con g r ess ion a l s ubshycommi t tee are a lso r equested wi th in the ne xt 45 d ays The o pi n ion of the Bo a r d is t hat based o n the adv o cac y pos i t ion requi r eme n t s t he NCSL should be r epresen t ed before the (ongres s ion al committee by the Pr esident and other Bo a r d membe r s

Advo c a c y Pos i t ion - Ro n a lso s ta ted t hat in the byl a ws tw o a re as c ould be i n te rpre t ed as p ro shya d v ocac y ie a r t icle II s e ction B p arashygr a ph 7 and section C

Dur in g t he di s cussion o f t he r ough d r a f t seve r a l point s we re made

A Advocacy po s it ion i s all owed by the byl aws

B A s urvey is n eed ed for a s tand pro or con in all ca s e s

ANSI - Draft 2 Re vi s i on 0 o f the ASQC Qu ali ty Sta nd ard for Ca l i b ra t i o n Sys t e ms wi l l be se n t t o ASQC befo r e Ma y 1 1 982 for s ub mi t t a l t o th e Intermed i a t e App rova l Grou p

An Intermediate App rov a l Group mostly c o n shys isting of r epr e s en ta t ives of NCSL member o r shyganizations ha s b ee n formed For a d d i t iona l d e t ai ls r efer e nce sho uld b e ma de t o t he NCSL Newsletter Vol 22 No 1 Ma r ch 1 98 2 page 62 S ubmi t t a l t o t he In t ermedi a t e App r ova l Group wa s again d elayed thi s time be cau s e o f numer ou s une xpected c o ns t r uc t ive c omment s

C Al l results s hou l d b e d ue l y r e c orded

D Th e u s e o f a q uest i onnair e s i mil a r t o a cor por a t e p roxy s tatement wou l d be t he mo s t fe asibl e way to cond uc t t h e s u rvey

E The Presi dent should not ta ke a posi t i o n f or NCSL unl e ss s o d i r e c t e d b y t h e Board

F A minor ity o r majo r i t y r e port could b e gr eatl y influenced by the s pher e o f inte rshye s t withi n a fi el d of end e a vo rs i e a eroshys pac e may n o t r e spond t o a p h a r maceu t ica l adv ocac y pos i t i on q ue sti o nn air e Thi s could a f fec t a deci sion wr o ng ly

- 9 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

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r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

I

fI~(

WllAl ACtOU-T tcl v------r-~

~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

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TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

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industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

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c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Board Meeting

An Ad Hoc Committee chaired by Ron Kidd was established to refine the advocacy position situation guidelines etc Committee members are Pete England George Rice Bryan Werner and Doug Doi All Board members should send t heir comme nts to Ron Kidd

Formal Productivi ty Program - TRW is trying to insti tute an FPP Hartwell asked if anyone had a like program in the metrology area in their company Several members of the Board stated that their companies had some sort of proshyductivity program The following agreed to forward information to Hartwell John Martin George Rice Hillary Taff and Moe Corrigan

-10shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

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~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

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PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

- 2 2 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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- 28 shy

A CONCEPT IN TEST EQUIPMENT MANAGEMENT

DENNIS HEIDNER and FRANK CONNOLLY Boeing Aer os pace Compa ny

Seattle Washington

OVERVIEW

The e f f e c t i ve management of test equipme n t resources in a n everchanging en vironme nt of a c celerated te chnolgoy a nd h i g h inflation rates is a chal l enge t ha t mus t be met b y any company t ha t h a s a l ar ge i nventor y o f t est e q ui pme n t The m ho d s u s e d t o ma n a ge these inventor ie s var y ( r om i ndi v i d a l u s e r s ma n ag shying t heir own e q u i pme n t t o a c e n t r aI poo l o f e qu i pmen t s uppo r t i ng ma n y us e r s Ea c h apshyp r o ac h ha s it s o wn me r i t de pe nd inq o n the specif i c a ppl ica tion

The meth od u s e d by the Boe i ng Ae ros pace Comshypa ny to manage what we cal l Ge ne r al Pur oose Te st Eq u ipmen t (GPTE ) i s a n e q u ipme n t pool c o n c e pt () The e q u ipme n t po ol sys t e m o per shyates simil ar t o a library No equipme nt is permanentl y a ssig ned t o a pa r t i c ul a r use r b u t is loaned f r om a ce n t r a l po o l o f eq ui pme n t Th e pool is u nd e r the control o f a te s t equ i p shyment man agement organization ha v ing authority to borrow on d emand from one us e r t o me et c riti c al requirements o f a s e cond user f o r short t e rm loans This we call a d emand loan principle In the ca s e of Boeing Ae rospace the pool appr oach provides for better s e r v i c e t o user organi zati on s and i mpr ove d GPTE utilizashyt i o n Since its implemen t ation in 19 6 5 the po o l system has redu ced cost while making test e q u i pme n t more r ead i l y ava il a b l e f or u s e a s needed It h a s a lso provided quick r e ac t ion capability t o support unanticipa ted ne e ds Thi s capabil ity however r e qu i r e s a work abl e manag ement s ystem including acc u r a te r ecord s o f equipment autho ri zed user s and c al i b r a shytion certif ication hi stories

The Test Equi pment Man a gement (TME) organizashyt i o n within Engineering Te chnology of the Boeshying Aero s pace Company h as t he res po n s i b i l i ty to prov i de such a man agement s y stem The s yste m must be cap abl e o f supporting a l l o pershyating elements o f the c ompan y Le Engishyne ering Manufact uring Quali t y Ass uranc e and Fa c i l i t i e s Pool managem en t function s include the req uirement s anal y si s acquisi shytion utilitization maintenance c onfigurashyti on management a n d dis position of a d ynami c invento r y c o n s i s t i ng o f appr oximately 280 00 items o f e q u i pmen t wit h a total va l ue in e xce s s o f $20 million Th e inventory is dynami c in that ove r 3 00 0 t ransactions a week ar e p r o shyc essed to manage t he mo vement o f GPTE 600 us er g r o up s in s i x inpl ant an many outplant locashytions

(l )Ge neral Pu r pos e Te st Equi pment - Measure shyment and test e q u i pme n t whi c h ca n no rmal l y be p r ocu red in a n o f f - t he - s he l f configurat i on It is por t abl e ha s multipl e us e applicat i on c a n be moved f r om poi nt o f us a ge for mainshyt enance and or c al ibr a tion

The GPTE service desc r ibed abo ve is p r o v i d e d by TEM wi thi n t he b ud ge t a ry c ontrols a nd c omshypany business p la n ob jec t i ve s t h r o ug h the functi ona l o r g a ni z a t ion s ho wn i n F i g ur e 1 Thi s functi onal o r g ani z a t io n p ro v i des f or

a A s e rv i c e - o r i e n ted e l e men t with me a ns o f s torag e and distr i bu t i on o f GPTE r e so urce s This we c a l l o ur Hold Ar ea o per a t i o n h a ving dela y d ating cap a bi lity ie c a l ib r a t i o n c ycle clo ck starts a t time o f i ssue to a user r ather th an at the time o f cali brashytion The bas i c r esponsib ility o f thi s element is t o ser vi c e the use r areas effe cshyti vel y making maximum util izati on o f the GPTE resource s The Ho l d Are a s a re c enshyter e d i n si x u s e r-oriented loc at i o ns s up shyp le men ted b y o ne ware house Hold Area personnel di stribute a nd issue GPTE to authorized users a r r a nge f or GPTE l oan s between user s of e quipme nt re com mend proshycurement to meet inventor y s ho rt a ge s asshys u r e that GPTE in u s e has val i d certi shyficat i on for c alibrat i on and p r ov ide d a t a in a timely manner t o update the inventor y d at a b a s e

ORGANIZATIONFUNCTIONAL STRUCTURE

FIGURE 1

TEST EQU I PMENT tlAH(GEIENT

EQUIPMENT HOI-O AREAEIIGINEERIHG ACCOUHTABILln OPERAT IOHS

GPTE REQU IREI1ENTS GPTE INVE~TORY CONTROL GPTE STORE OPERAnONS - NWYSIS - OJSTODI AL REcaIDS - ISSU NID RErEIPT - STATE-a-THE-AAT - USER AlTIJl IZATll1l - UTILIZATll1l - - EWI~ OISPOSITI~ - ALTIJlNATE EWIPIEliTroDISTRATll1I - aNF IGUlIITll1l - WT1IAHT StJIORT - rALlCERT StIMILlNfE

GPTE PROVI SIOHING - SlUPPIHG - SIJRPUJS KTIVllY - PERRIlfWlCl

- MOIASE REWlSlTJOH - wrrATlON EVAWlTlOH - AlXEPTNO

b An e ng i ne e r i ng element with t he c apabilit y to pr o vi de t e c h n i c a l s up por t t o s a t i s fy us er r e q u i r e me n ts The e ng i ne e r i n g g roup h as a u t ho r i ty f or a l l t e c h nica l d ecisions af f ec t i ng t he GPTE inventory i nc l Ud i ng the as s e s sment o f GPTE r e qu ir eme nts p r o c ur e shyment e valu ation bu d ge t ar y f o r e c a s t a nd moni to r ing ac ce pta nc e rej e c t i on o f new GPTE configuratilln c o n trol and t e chn i cal support t o a l l GPTE user s

c A c entral a dmini str at i ve-oriente d e le me n t to p r o v ide can trol i nve n t or y man ageme n t and accountabil it y Th e method ol og y and a c c ur a c y o f the TEM records ar e t h e b a sic r esponsibilitie s o f th is organizati on e le shyment In add i t i o n the c e n t r al admini str ashytive functi on i s r e s ponsibl e f or approv ing authori ze d u ser s is s ui ng us er librar y c ards sh i p p i ng r e ce i v i ng o f GPTE to from

-11shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

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~-------~ Ba s ed on the r e sult s of thi s s t udy the equ i p shyment pool c oncept using the d emand loan prinshyc i ple was c o n s i de r e d ef fe c t ive a nd r et a ine d The bat c h st ream in vento r y manag ement sy s tem howe ver wa s r eplaced with a user o r ie n te d i nter active c o mp uter system under the contro l of and ope rated by t he TEM o r ga n i za t i o n Th e prime o bje c t ive was to i nc r e ase us er p roducshytivi ty through better GPTE service at r educed o ve rall o pe ra t i ng cos t t o the c ompany Speshyc i fic g o a ls to meet the above obj e cti ve wa s therefo r e d irected at t h e f oll owing

a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

- 2 2 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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copies for yo u

THE CALIB A IO N NEWSLETTER BY

CALlBAATlON I CONSULTIN G SEfWICES INC 111 n BIG BEND DftI V[

DES PLAIHfS III 600111

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- 28 shy

r e mote sites a nd the cond uc t o f i nternal a Ud i t s

A simpl if i ed fl ow c ha r t o f th e basic TEM a cshyti vitie s is s hown in Fig ur e 2

S i nc e the s ta r t of t he equ i pme n t pool conce pt a t Boeing the TEM ac t iv i t ie s wer e s u p po r ted by a Ba tc h Mode I BM 37 0 c ompute r in ventor y manage ment s ystem Thi s Batch Mode sys te m was r apid ly becoming o bs olete ha ving management de f i c i e nc ies that were affe cting the e ffi c i e n t u s e o f equ i pme n t r esource s Be cuase o f t he se management de f ic i e nc i e s and becau s e o f the i nc r e a se d p roblems r e lated t o te chnolog y deshyve lopme n t a nd infl ation rates a s t udy was initiated to in ve stig ate the magnitude of the problem e val ua te approache s o f o t he r c omshyp a nie s t o invento r y ma nagement and pr opose a s o l u t i o n

TEST EQUIPtlEHI IWfAGEIEIlT Am ~ ITlES F L O ~ (ART

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a Red uce the size of the inventory through i ncre a se d equ i pmen t util ization us in g new invento r y c o n t ro l t echn ique s--real time dat a ba se

b Re d uce maintena nce and c a l ce r t c o s t th r ough incre ased uti lization o f s he l f life a nd c al cert c ycle d ata

c Support inc re a se d p roductivity re qui r eshyments o f user s through the a vail a bilit y o f GPTE more suitable t o specfi c ta s ks

TEST EQUIPMENT INVENTORY MANAGEMENT (TEIM ) SYSTEM

To me et the abo ve goals an inte racti ve i nvenshyt ory con t r o l s ystem a s sh own in Figure 3 was im plemented The s y s t em is b ase d o n the HP 3 00 0 series 3 3 mini computer with r e mot e I O de vi c e s l o c ated a t a l l Test Equ i pme n t Ma nageshyment a r e as of o pe ra t ion i e the managemen t offi c e a rea six hold a reas r e c e i ving are a s warehouse and Qual ity As sur a nce p r i mar y a nd seco nd a ry cali bration laboratori e s The TEIM s yste m i s modu l a r y c o nst r ucte d a l ong the lines of t he functional o r ga niz a t ion s ho wn i n F i g ur e I and Qual i ty As s ur a nce Ca l Cer t org anshyizati o n Each organi zationa l element has t he capa b i l i ty to update spe cific items o f the data base r e l a t ive to their area of r esponsshyibi li t y Ea c h f unc t i o n al e le me n t al s o has the ability t o l ook at all d ata re l a t ive t o a give n piece o f GPTE o r f amil y g r oupi ng Th e s e d ata are a va il a ble i n s t a nd a r d d ocument fo rmat such a s manufactur e r a nd model nomenclature acshycou nt ab il i t y a nd e qui pment c a t a l ogs Th e d a t a i s a lso ava ilable through s pe c i a l report s o n all e l e me n t s o f the d a ta b a s e f o rmate d throug h ope r ator d e vel oped prog r ams as re shyq u i re d

The hardwar e software a rc h i tec t ure o f t he s y s tem s ho wn in Figur e 3 was designed s o that personnel with little o r no c omp ute r s ystem e x pe r ie nce cou l d u se it Opera tor acce ptance of the TEIMS was therefor e a c kno wledge d a s the ke y el ement in s uc ces sful l y accompli shing TEM s t a ted g o als

TEST UlJIltOO INVEllTORY AAIlAGU1EHT min) sm Ell

Ot her ar e as s pec i fci al ly a dd resse d in c onshyceptual de sign o f t h e s ys te m wer e

a Rea l time management visibility

b Equipment utili z ation d at a

c Al te r na te equ i pmen t descripti ons

d Hi storical da ta fil es

e F l e x ibil i t y in data base f or generati on o f qu ic k r eport s

- 1 2 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

- 2 2 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

TEI M SYSTEM I MPLEMENTATI ON

One of t he major concer ns in designing the TEIM system was the de vel opment of acceptable screen format and data entry methods We were abl e to us e much of the ground work laid by e a r l ie r interactive systems Thi s was coupled with modeling techniques for man y elements of the proposed TEIM system u sing a PDP 11 70 The model ing approach enables us t o human engineer the s ystem by using screen formats with operators and mak e necessary change s in the c oncepts before the progr amming on the final system began

An additional benefit of t he mo 1 ] i ng was that we were able t o begi n t he i n t educ t i o n and training of personnel be Eo r e t h e proq r a ms were actually installed

Data Entry - Dur i ng t he modeling on the P P 11 70 we not i c e d c o n s i d e r a b l e problems wi t h tr anscript i o n rr r s ven more s o t a n u nde r the pre viou s ba t ch system Th i 5 we s be cause the Hold Al-c a pc r sonnel h d ve r y l i t tl e exshyperience wi t h ke vb o a r d o pe r a t ions It i s worth noti n her e t hat a 1 transcr i p tion error had he potential of losing inve nLory visibilit y o n 200 0 to 3 0 0 0 pieces of e q u i pshyment a year A re view o f industry repor t s 0

bar code s and company experiments with b a r codes on t ool i ng inventories l ed us to look more close ly a t the bar code p r i nc i pl e

There are c u r r e n t l y a v ailable about a d ozen popular bar coding schemes and me thods We finally decided on a bar code called Code 3 9 because of the flexibil i ty pr ovided by its unique a l p hnume r i c c a p a bility The decision was also based on th e f a c t that Code 3 9 equipshyment was a local manufacturer ( 2)

Our greatest d i f f i c u l t y wi th th e bar c oding to date was t he l oc ating of good vendors for printed bar codes We had o r i g i n a l ly planned to print our own h owe ver we soon found that the adhesive on the labels would soak through and damage the inks We also en shyc ounte r e d problems wi th o ve r 1 ay ing the bar c odes with p r o t e c t i ve myl ar s We e va l ua t e d printed bar c ode labels from seve ral manushyfactu r ers fin all y selecting two vendors that met o ur r e q u i re ment s (3)

Ut ilization - The modeling technique was also used to test ideas on collecti ng utili zation i nfor mat i o n F r om t he e xperi ence gained we were abl e t o conclude that two types of utilishyzation data we r e nece ss ary Th e fir st was

(2 ) Ba r code reader s and wands purchased fr om Inter face Mech anisms Inc 44 05 Ru s s e l l Ro a d PO Box N Lynwood WA 9803 6 Ph ( 20 6 ) 7 43 shy7036 TWX (91 0 ) 44 9-08 70

actual usage by the e nd u sers and the second was of time i ssued out This data proshyv i d e d b y TEIMS makes it possible to l ocate problem areas improve productivity and a i d in the buy decision

TEMMe trolog y Interface - During the ini tial c o nce p t de velopment of the TEIM S the peopl e at the Boeing Metrolog y Labs had indicated that they would like to streamline the in tershyface between our two operating organizations Thi s interface c ould also h a ve a great benefit t o the company by reducing unnecessary work and ri sk of error We alre ady had close ties with the Metrol ogy J05 r eporting s ystem in that the old GPTE batch system fed the J05 s e ver al tapes a week f or dat a update Th e problem then was t o devel op a way t o c ollect and input the data to the computer and proce ss what was ne eded by TErMS and Metrol og y J 0 5 repor tinq s ystem Boeing Metroloqy had s uq shyg e s t e d an optical ma r k se nse r eader concept which appeared t o be ideal t o t he s i t ua t ion Using the optical mark sense reader appr o ach it would be conceivable to ha ve the TEIMS c omputer print cal cert requir emen ts f r o m the J05 data b a s e o n preprinted c a l ce r t work c ards (4) This was accomplished through one manual transaction On completion of the calibration the technician mark s the cards for scan input into t he TEIM S computer s y t s e m f or data base update This results in the be st of two wor Ids-- a comp ute r input and a pershymanent handwritten traceable document

Nomenclature - The mos t difficult pr oblem in inte rfacing t he TEIM and J 05 system was to a r r ive at a commo n equi pment identification Ie nomenclature descripti ons make mode l s etc

Th e soluti on wa s t o stand ar dize the nomenshyc l a t u r e using a g eneric n aming syste m alre ady used by much o f indu s try This approach reshyquir ed considerabl e effort in e s t a bl i s h i ng a nomenclature compat i ble to both o rganiza tion el ements The ge ne r ic meth od make s it much easi e r fo r per sonnel to use the TEIMS system

Specification amp Service History - Another l ong-t ime problem with the b a t c h system wa s the lack of specifications and s e rv i c e his t ory information Ea c h yea r we surplus items that have not be en used f or a n extended time It wa s enti rel y pos s ibl e due to the lack o f visishybility that we would s u r p l us a good i t e m whil e an equi pment user had a real dog in use Likewise i t was poss ibl e t ha t we wo uld have r eque s t s t o buy a new Model Z when a Model X in the war ehouse would be suf fici ent had c omparative spec da t a been readily availshyable The only method of maintaining specifishycations wa s to r etain manufacturers catalogs f o r as l ong a per i od as yo u had equi pment i n the inventory This meant retaini ng catalogs for as much a s 2 0 ye a rs

(3 ) Data Compo s i t ion 7 5 Townsend Stre et San Francisco CA 94 1 07 Ph (4 15 ) 4 21-3 1 0 0 and (4 ) SCAN- TRON Model 5 098 Op t i c a l Mark Reade r Data Doc ume n t s System Co r p 301 Gardner Dr i ve PO Box 30 Industrial Air po r t KS 6 6 03 1 Ph ( 91 3) 76 4- 5550 - 13 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

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c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

The specification data now maintaine d in TEIMS contains eight equipment specification fields the cal cert c ycles ne eded f or issuing the Ca l ibr a t i o n Lab pr ocedure Federal Stock numshyber a general descr iption I quanti ty in inshyventor y and latest acquisition co s t

Our service histor y includes the c umul a t i ve c o s t of repair time required for calibrati on and maintenance number of calibrations and number of intolerance calibrations Monthly report s then combi ne the information from like models to pr ovide ser vice histo r y r e po r t s for any manufacturer o r model Other progr ams then locate the dogs for surplus ac t i o n and select items that possi bly should have calishybration cycles lengthened or shortened based on in-tolerance d ata

SUMMARY

The TEIM system was implemented in two phases--the first being the direct replacement o f the pr e v i o us batch system The second ph ase (which we are now implementing) i s the modul e f or service history s pe c i f i c a t i o ns a nd utilization

The Phase I TEIMS as developed to date has performed well in meeting specific goals One significant f ac t o r is that the system has been ac ce p t ed by GPTE user s a s well a s the TEIM system o pe ra t i ng personnel This confidence by GPTE user s has resulted in more and more equipment being returned to the Hold Area between use r ather than be ing r etained i n user areas Thi s has provide d grea t er visibility o n equipment use and e q ui pme nt availability and has increased equipment cal cert shelf life status thus reducing overall cal cert cost User productivity has a l s o improved in that less time is spent removing or replac ing equipment du e for c al as users are t aking maximum advantage of eq uipment total c al ishybrat i on cycle s

Since the initial implementation of the TEIMS in May 1980 a significant reduction in inshyventory has been recorded and an increase in equipment utilization has been ach i eve d Hold Area equipment stock with immedi ate v i s i b il ity and availability for demand loan has increased 37 In addition the Quality Assurance backshyl og has been reduced by 23 with a 14 reducshytion in cal cert turn-around time

These savings allowed TEM to expand the scope of the GPTE inventory t o meet technolog y developments and meet price escalations withshyout requesting additional capital funding Another c ommodity that is difficult to price is the increased productivity of GPTE users themselves This aspect is just starting t o be r ecognized a nd will become a significant cost savings as the full capabil i ty of the TEIM sy s t e m is realized Files such as service history which improve wi th time specificat ion data catalogs which are in teh process of be i ng r el ea sed and foll ow-up procurement files will help realize the full potential of the TEIM s ys t e m

-14shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

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c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

PRODUCTIVI TY IN THE CALI BRATI ON LA8

WARREN COLLI ER Te ktr oni x Inc

Und oubte dly productivity and quality are number o ne c oncerns o f Us industr y t oda y Emotionall y the y ma y be over shadowed somewhat b y infl ation high interest r ate s and reshycess i o n b u t in term s of d ay- t o - d ay e f f o r t s of managers a n d supe rv iso rs qua l ity and proshyductivit y a re major t argets for im prove ment

The main r ea s on for this se t o f pri o r i t i e s i s the r educed c o mpe t i t i ve ne ss o f Ame r middot c a n good s in the marketplace The ~os s 0 bus iness to ove r seas compe t i t o r s has i nc r ea s e d nernpl o y shyment a nd therefore a dd e d to o u r e c o nom i c po l i t ica l and soc ial i Ll s fo r e ig n good s - shypar t i c ula r l y Japanese-- a r e pe~ ce iv d t o be of highe r qualit y a nd a b ot t e r value t h n ou r s Pe r ha ps not across-t he- bomiddot rd b t i n 5 0 man y d ur ables and high pr i c e middot t e ms that the pain i s ver y r eal--and its ge t t ng wor s e a l l t he time

Th e political ph ilosophy o f o ur current adm i nshyist ration i s s uch that t r a de barriers a r e at likel y to be u se d as a weapon i n the Tr a d e Wa r s Fo r ou r p urposes toda y I dont in tend to examine th at i ssue I simp ly state it as a matt e r o f f a c t

In pre paring the s e rema r ks I s c r i bb l e d a l arge num be r of not e s be f o r e coming down t o t he fundamental is sue o f de fini tion I think I kn ow what p r o d uc t i v i t y is a n d I expec t all o f yo u think you know what it is too Bu t if we are to c o mmun i ca t e e f f ec t i ve ly a nd t a ke ef fe c shytive ac t i o n at OUr j obs its best to be Sure just wha t it i s wer e t al king a bo u t

As an engineer and a metrol ogist my basi c tend ency is to d e fine productivit y as a r atio the ratio of useful work done f or a gi ve n amount o f some thing else Th a t s o me t h i ng e l s e cou l d be la bor hours machine time total expe nse dollars value o f assets ( i n ve s t men t ) o r some c o mb i na t i o n of these or other econo mi c factor s Let s call it economic input

By no w it should be obviou s that there is n o one f ixe d ag re ed up on or inherentl y p r o pe r c ho ice fo r the div ision o r de nomi na t o r i n the rat i o or p ropo r ti o n that we call p ro shyduc t i v i ty By the same t oken one has to de f i ne t he dividend o r e numerator i n t hi s r atio

To my way of th i nk ing we h a ve to ke ep both of these un i ts constant (both abo ve a nd below the line ) to mea sure or de mo n s t ra te a c ha nge in p r o d ucti v ity

By wa y of i l lu s t r a t ion s up pose that we test a nd rate an e ngi ne i n terms o f horse p ower per

pou nd weight o f the e ng ine pr o per If in a later test we r ate the e ng i ne in t erms o f horsepower pe r c ub ic inc h per pound weight o f t he t otal powe r t r a i n o r some othe r f a c tor i t i s not obvious what ( i f a ny t h i ng) weve done to the e ng ine it s elf

No w r e ducing the weight of other c o mp o ne n ts in the dr ive t rain might be a ver y g ood wa y to inc r e ase vehicl e f ue l e ff i c i e ncy but lets do n t ki d our selve s into thinking we ve do ne s omethi ng t o th e e ff ic i e nc y of the e ng i ne

I n a ca l l a b we pr obably thin k o f OUr o utp u t o r numer ator in t erm s of c a l i b r a t i o n s La s t we e k we did 20 low fr eq ue~cy s copes 3 2 high fr e que nc y s c ope s 1 9 p u l s e g ener ators 17 e ac h 4-1 2 digit DVMs and 48 e a c h 3 - 12 digit DVMs Th a t s o u r out p ut Su pp o s e we know th at in s ix mo n t h s well have to doubl e the o u t p u t but t he r e s no chance o f g etting mor e labor or a ny new t est e q u ipme n t We mi ght inve s t igate the po s si b il i t y of d oing limited cals and di scover that we can incre ase Our ou t p u t by 1 8 with no det rimental effect o n o ur customers

Doe s this incre ased o u t pu t ( us i ng the same resources ) represe nt a genuine increase in p r od uc t i v i t y Th e f act t hat we have changed t he natur e o f q uality o f the o u tp u t t end s t o c o nf use th e iss ue espe c ial l y since the s pecishyf i c ch ange may be pe r c e i ve d as a l essening or worse ning o f q uality Certa inl y t his change doesn t refle ct increased p r od uc tivi ty a t the mi c r o level If the technicians were making mo r e tweak s per unit time (TUT ) o r if the y had to spe nd le s s time waiting f or an instrument t o se t t le we wo ul d incre ase p rod uc t iv i ty a t the micro level and hopefUll y a t the macro l e vel too If a t echnici ans TUT r ate goes up but the time s a ve d is us ed f or non-productive e f fo r t s t he re is no r eal or net i nc re a s e i n pr oductivity

Now sup pose we f i nd that the te chn icians are using c a l i b r a t i o n p roce d u res wh ich ar e s ho t thr ough with red und ant c he cks poorl y th o ught o ut s equences t o o-tight performance l im its and s o on By c le a n i ng up these proc e d ures we shou ld be abl e to turn o ut mor e product of t he s ame qualit y u s i ng the same resources I th ink th is wo uld be v i ewed as i nc r e ased p r od uc tiv i t y by a l mos t a ny de fi ni t ion It s also a r el ashyt ivel y simple a nd cheap wa y to ge t there

Next l et s look some more a t the r el ationship be t we e n qualit y and p rod uc tiv i ty e spec i all y in t erms of r ejected o u t p ut When we g e ne ra te a defect ive or reject unit we ha vent be en f ully p r oduct i ve (using OU r basi c def in iti o n o f us e f u l o utpu t per unit o f econom i c i nput) The g r owing a p p r e c i a t i o n of th i s simple f a c t i s one o f t he main f or ces be hind Amer ican

-1 5shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

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ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

industry s c u r r e n t concern f or quality Theres been a percepti on for s ome time that qu ality is too expensive You have to pay all those damn inspectors and on top of it they ke ep causing s c r a p and rework

Well if your product is properly specd the reject and rework isnt c a u se d by the inshyspectors and you wouldnt need so many of them if y ou did it right the first time In fact as Phil Cr osby points out most American facshyt or ies c ontain and invisible factory This in visible fact ory is that portion o f pr oducshytion whi ch is devot ed t o manufactur ing reshyjects From this point of view it i snt the cost of qualit y that hurts its t he c o s t of unqua l i t y If yo u cut the s chedule for r eject s to zero and use the invisibl e fact or y to manufacture useful output you should be way ahead of the game

Looking back into our c a l l a b we kn ow about poor q ua l i ty when we get r eturns Redoing t hese returns takes time and hurts our proshyductivity Strangely enough its possible t o become unproductive by trying too hard t o increase pr oductivity--especia l ly when the method is t o push people past their limits Wasting time and goofing off ar e insidiously non-producti ve and can hardly be tolerated in t odays economy At the s a me time a push for p r oductivity that stretches peopl e beyond their limits will be self-defeati ng if the result is to generate too much non-usable output

Certainly the nose-to-the-grindstone (NTG) fa ctor is a constant concern in the human part of producti vity along with tweaks pe r unit time (TUT) As suming a fixed t echnology and sound procedures productivity (P) s ho u l d be

(1 ) P NTG bull TUT

I see no hard e v i de nce that the human race has undergone or will underg o any big change in it s inherent capabilities f or NTG or TUT This is not t o s a y that these factor s should be igshynored We should always be c oncerned about people under utilizing themselves in t his reshygard My point is that the o verall advance in human producti vity is not due to an intrinsic change in human capability rather the adshyvance is r esident in the technology that s c i shyentific effort has created Th e fruits of technology are real ized in equipment-shyhardware if you will Not only punch pr e sses bulldozer s and robot welders but telephones c omputer s and all the o t he r a c coutrements o f c ommunication and data processing

what does this mean to the c a l lab I think it means that we can impr ove o ur pr oductivity with fi xed t echnolog y o n ly if we are a lready inefficient or deficient in o ne of the follow

a) NTG

Too much goofing off 100 much time on peripheral nonshy

productive mish wash Poor Tliotivation No percei ved payoff for NTG

b) TUT

Improper personal selection La ck o f training Improper tools e t c Poor motivation payoff etc

c ) Procedure s

Re d und a nc y Over kill Poor flow or sequencing Ambiguity lack of c la r i t y etc

d) Quality St a nd a r d s

Too tight too l oose Improper paramete rs Doesnt fit application customer needs Wrong hardwar e t o begin with

Each of the above i terns c ould be the subject of a s eparate paper if not a l i f e t i me o f study And to a large extent the y are interactive and nondi screte It s hard to get pe o p l e to knuckle down and work fast if they dont beshylieve they are doing things in the right way or that the y are working toward the wr ong objective While I have no first hand e x pe r ishyence with Quality Circle s I cant he lp but believe that improvement o f these f actors must be a big part of Quality Circles acti vity and e f f e c t i ve ne s s Even in pure technol og y wor kshye r s with littl e f o rmal training can c ome up wit h some surprising insights Of c o u r s e they can be 180 degrees o f f the path too but at least theyre checking directions

Historicall y calibration has be en a laborshyintensive process which is to sa y that the cost of a calibration has be en heavily based on the payroll expenses of the t e chnician or e ng i nee r doing the cal ibra t i on and hi s o r her speed at doing calibrations To be sure there has also be en appreciable equipment expense investment associatd with calibration Howe ver the e x shypense of the equipment has borne little r elashytionship to the productivity of the metro l oshygist In fact high precision ca l i b r a t i o n s ar e generally more time con s umi ng require higher skil led (higher paid) labor and more e x pe ns ive te st equipment

The traditi onal approach is rathe r like paying someone to dig a ditch in radio-active r ock using hand tools Gold-plated diamond-ti pped shovels protective clothing and decontamin a shytion pr ocedures add a lot of expense but dont do much t o speed up the pr o c e ss Whatis neede d is a machine that will speed up if not replace the metrologist

-16shy

Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

-17shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

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Yes the future of cal lab productivity clearshyly rests on effective utilization of ATE microprocessors and other technologies which reduce the labor required to do a calibration Other fundamental improvements may involve the stability and reliability of the items to be calibrated Longer calibration cycles with lower risk and frequent on-lineon-site veri shyfication tests can reduce the calibration workload producing the same end result as improved productivity

Effective use of ATE and microprocessors inshyvolves more than the mere acquisi tion and deployment of hardware I suspect that many cal labs today are involved in a situation similar to that of early users of computers in the business environment Hardware costs are declining while capabilities are rising But organization software application knowledge and resultant high throug hput must be there in order for the economic payoff to become a reality

One interesting facet to the application of ATE to cal lab productivity is the impact of programablesmart instruments in the instrushyment pool If ATE is used to calibrate dumb manually operated test equipment there is a lesser gain in productivity than may be achieved if the OUT itself is smartprogramshyable In t his latter case the technicians job may consist of little more than connecting the ATE to the OUT and calling up or loading the appropriate software Gains are possible in all of the following

1) Speed of calibration

2) Qualityconsistency of testing

3) Automatic data generationprocessing recording

In fact if the OUT meets specs not only is the technicians time expenditure very small the skill level required of the technician goes down dramatically too

The other side of the coin is that the dependshyency on complete accurate and reliable soft shyware becomes very high There is a school of thought which says that software is a new element in the calibration process and there are even questions regarding the traceabil shyity of software While I must confess to a relative lack of experience in this area I sti 11 feel compelled to comment that this problems seems to me to be misrepresented either quantitatively or qualitatively My 1 imi ted expe r ience wi th software tells me that wh i l e instructions and procedures written for m c h i ne s are perhaps more cryptic and obscure th a n those written for human operators they are still instructions procedures and can do no more or less in the calibration process Of course machines follow program instructions slavishly and are incapable of the adaptashytioncorrectioninterpretation that a good metrology technican can bring to bear on ordishynary calibration procedures So while I agree that software needs to be very carefully evalshyuated (and perhaps even c e r t if i e d ) I will

argue that if it is certified it can only be certified to produce traceable results when properly run on equipment which in turn is in calibration and traceable The same could be done with calibration procedures written for human operators

My own view of the traceability concept is that an overemphasis on records keeping and proshycedures can give an appearance of quality which is not necessar ily val i d While unsound procedures can produce bad results (assuming they are followed) and a lack of ad he rence to valid procedures can do likewise t here are still other sources of error even when sound procedures are followed

I agree with Brian Belanger of NBS that the bottom line of traceability is qua lity measshyurement If I understand the relat ions hip of this to the MAP Program I see MAP as a closed loop approach to traceability whe r e as the MIL-C-45662 approach is a relatively open loop approach I also see in MIL-STD-45562 some additional requirements which I t h i n k are intended to c]ose the loop on t r ace ao i Li t y

Aside from speed and accuracy of calibration there are some other producti vity i mp r o ve me n t s whic h can be derived from recent technology Self test signature analysis BI E etc t are all various approaches to simpli fying diagshynosis (troubleshooting) and repair Boardshyswapping and module-swapping can provide simshyilar benefits There are also instruments in which the key components (those cr itical to calibration) are contained in a single board or module This allows rotation of spare modules for instant on-site calibration The amount of money tied up in spares could be considerably less than in spares at t he comshyplete instrument level

Its interesting to note t hat those who design and market test equipment dont always have a good awareness of the needs of the cal lab or even a good appreciation of the fine points of metrology It may be that NCSL should put some effort into PR and education within the inshystrumentation community not just t he general public and the potential s t ude n t of metrology Another very basic issue is t hat of the assignment of calibration intervals

Often this involves black magic tradition and possibly guesswork There are even opposshying schools of thought on why instruments go out of cal ibration One school favors the idea of continuous drift and another blames random shifts or failure The implications are enorshymous and I dont know if any bas ic r e se arch is being done A lot of specialized work done in the pr i vate sector is pr opr ietary and the results are guarded for competative reasons

To this point my examination of productivity has focused pr imar ily on the internal wor kings of the cal lab and its productivity in pershyforming calibrations Now Id like to turn our attention to the produc t i v l t y of the cal labs cus t ome r s and how that productivity is

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affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

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ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

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c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

affected by the quantity and quality of our calibrations Although turnaround time isnt nece ssarily a measure o f cal lab productivity its certainly closely related and it has a very defin ite effect on the user I S producshyti vity A production line which is shut down slowed down or re scheduled while waiting f or calibration or repair of t est equipment is having its productivity impacted by the operashytional efficiency of the cal lab One approach is the use of spare s The pr oblem with this is that spares have an ongoing negative effect on the users producti vity because of increased inve stment In any specific s i t ua t i o n there is a tradeoff between the cost of spares cal lab test equipment and cal lab staffing level Hopefully the proper mix is determined by someone with the ability and information necessary to do a valid cost-benefit ana lysis In practi ce suboptimization is probably common

A somewhat subtler but all-per vading r esult of c a l lab output is i t s influence on the qualit y of work done by the user In t h i s regard I like to think of the cal labs o utput not in terms of calibration or i ns t r ume nt s but in tems of measurement quality

Yes what we deli ver t o the production floor is an in visible product Measureme nt Quality after all thats what metrology is all about The rejection of good parts or the acceptance of bad part s can be the direct result of cal lab error or an unsound metrology program Likeshywise design errors and parts compatability problems can occur as a result of measurement error in the design proce ss Obviously the quality aspect of cal lab productivity has a tremendous impact on the qua lity-producti vity qu otient of the customer or parent organizashytion The cost effectiveness o f the cal lab should be weighed in light of its role i n the ov e r a l l quality-productivity quotient of the entire organization

-18shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

- 20shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

ATE CALIBRATION BY MEANS OF DYNAMIC TRANSPORT STANDARDS

BARRY A BELL

OSKARS PETERSONS

Electrosystems Di vision National Bure au o f St and ards

Washington DC 20234

ABSTRACT PRESENT CALI BRATION SYSTEM

The concep t of dynamic transport stsnderds f or cali shyCal i br a t i on s uppo r t f or test e q ui pme n t us e r s bration o f ATE in t he f iel d is di s c us s a wi tlJ empha si s is now ge ne ra l ly provided v i a a hie rarchial on ens ur ing the traceabilit y of th~ ca l i bra ion s t o the s ystem of l aboratorie s e ach le vel of which basic ph ysical s t andards a s mai ll tain~ bV lIP-S The prov ide s the meas urement base for that below t echn ical de tai ls o f t he propos e d transpcr ~ stan dar d it and the top l eve l o f whi ch is NBS (2) f or dc and l ow t requeno ies are 011 ljn~lt1 The calishybration support for this tzx en epot s ndar d amp t NBS at t he s tandards l aboratory and self-eh eck ~ in th e fl l d This c a l i br a t io n hier ar c hy is not unifor m a r e discus sed Impl ement at i on of til~ c el ibr at i n among user s It can be extensi ve a nd hi g hly s ys t em for ATE ba s ed on the djnami c crenspor t s c aIl d ~r(l or g a n ized as in the Armed Serv ices an d with i s discus s ed 0 0 0 s upp l ie rs o r it can be ve ry l i mi ted as

with occ asi onal use rs o f s peci ali zed mea s ur e shyment s eg rese arche rs

INTRODUCTION

It is instr uctive t o re view t he t ype s of Ca l ibra t i on of a measuring i ns t r ume nt o r sys shy s ta ndard s and te st instruments tha t are main shytem invol ves t ~e dete r mi nat io n o f the d i f e r shy t ai ned a t e ach level of t he cali bra t i on hiershyence be twe e n t he va l ue of a ph ys i cal qua nt i t y a rc hy and how t he measuremen t uni ts are pro shyas measured by t he i ns t r ument under cal i bra shy pagated t o t he ne xt lower level The processt i on a nd t he value pr ovided by the s t a nda r d i s illustr ated by the char t i n Fig ur e 1 NBSi ns trument which appr oache s the t r ue va l ue ma i nt a i ns and dissemina t es the na ti onalwith a n e s timated uncertai nt y ( e r r or ) I n s t and ard s for the vari ous units of electrical co nnect ion with c a l ibr a t ions one o f t e n e nshy measur ement [Dimensionless q ua ntitie s s uc h co unters t he te r m traceabil ity t o NBS ~ he as ratios and highl y derived quan titie s s uc h s t a t e me n t is intended t o ensure that the re shy as pul se transiti on d urati on (r i se and fallsults o f measurements as soc ia te d with the c al shy time) ar e al s o o f te n denoted a s pa r ame t er s ] i bration have qua nti f iably known rela t ionshy This ac t iv i ty is conducted with r e l a t ive ly fewSh i ps t o mea surement un i t s maintained at NBS a nd ge ne r a l ly fixed-value s tand a rd s Fo r dcA definiti on f or trace abilit y pr oposed by Dr an d low f r equencie s examples are electroshyB C Belanger of NBS (1) state s that mea su reshy che mic al s t a nd a r d c e l ls fo r voltage s tand ard ments ha ve traceability t o the designat ed resistors standard capac i t o r s and inductorss t a nd a r d s if a nd o nly i f s c i e n t i f i c al Ly r igorshy and thermal t ype acdc t ransfer device s t o ous ev idence i s produced on a cont i nu i ng basis r elate alternating to dir ect vo l tage t o show that the me asurement process i s p r oshyducing me asur ement r e s uI ts (d ata ) f or whic h the total me a sureme nt unc ertainty rel ative to At the level bel ow i n t he corporate s tanda rdsna t i ona l o r other designated s tandard s is laborator y ther e ar e simila r standards deshyq ua n ti f i e d NBS doe s not regulate the imp le shy no ted a s primary wor king standards The unit s ment at ion of t r ace a b i 1 i t y proce sse S Such are o ften transferred from NBS to t he standshypr ocesses o f t e n a s soc i a te d wit h c alibration ards l aborat ory by NBS c al ibr ating tr an sfer pr otocol s a nd i nte rva ls a re ge ne r a l ly p reshy standard s which ar e sta ble enough f o r shi pshyscr ibed by r egula tory agencies a nd lar ge govshy ment Se lec ted prima r y wor king st a ndar d s a re ernment pur chaser s s uc h as the DoD thr ou gh ge ne r a l l y used as the tr ansfer stand ard s I n spe cif ications regUlati ons or c on tr ac t proshy th i s proce ss the numbe r o f quantitie s cali shyv i s i ons br a t e d by NBS is small and the associated

d yn amic a nd fr e quency ranges a re ve r y na rr ow Suc h s tand a r d s are o ften refer r ed t o as

In t h i s pape r we s hall br iefl y r ev i e w the s t a t ic implying that measu re men t s are e s se n shygeneral approac h t o calibrati on of e l ec t ri c a l tiall y conducted und er steady-state o r static me asurements di scuss i ts 1 imi tat i ons when cond iti ons where the measurement time is ve ryappli e d to modern te s t instrument s a nd s ysshy l ong compared with the period o f the signaltems espec ia l ly ATE and propo se an a l te r na shyt ive a ppr oach The ba s ic pr oblem o f how to ensure accurac y an d p rov i de more dire c t traceshy In a regul ar c a li br at i o n the cus t ome r s a bi l i ty f o r the s timulus a nd me asur ement c a p shy sta ndard is s h ipped to NBS and is ca l i br a t ed abilities o f comple x ele ctronic in strume ntashy without muc h feedback regarding the accur ac yti on and ATE can be more effectively s o lve d of t he customer I s me asu r ement pr ocess An usi ng the concept o f sys t em calibr at i on v ia expande d measurement s er vi ce known as t he d ynamic tran sport s tandards (DTS) Meas ur ement Assuran ce Pr ogr am (MAP) is ava i l shy

able f rom NB S f o r se veral p a r ame t e r s (2) In a -1 9shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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- 28 shy

MAP service I an NBS-owned transfe r standard is sent to the customer and the measured value is repo rted ba ck to NBS The customers v a l ue is comp a r ed with the mea su r e men t at NBS before the tr ansfe r standard ha s been shipped and after it is r eturned The proce s s if r epeated over a period of time y i e l d s the offset of the c u s t ome r 1 s standard as well as information about the c a l i b r a t i o n process f or statistical a na lys is

The burden on the standards laborator y is quite heavy in fur ther pr opagating the mea sshyur ement un its Ha ving r ece ive d calibrations f or r el at ivel y fe w s t a nd ard s t he ir r a ng e must be e xpanded For e xample a c ontinuous range of known resistance values f r om milliohms to meg ohms has to be established from relatively few standards in s ome labor a t o r ies from a singl e I-ohm sta ndard S i mi l a r ly a rang e o f kn o wn dc and a c voltages from 1 mV to 1 00 0 V ha s t o be deri ved fr om the nominal 1 01 8 vo l t s of a standard cell Range e xtending devices such a s voltage a nd current di viders and impedance bridge s are ut ili zed f or th is purpose These de vi ce s also must be calibrated For conshyvenience some o f the established quantity ( p a r ame t e r) v a l ue s ar e then transferred t o mult i-range preci sion instrument s such as digital voltmeters and ac and dc sources I n some instance s the quantit y o f interest must be derived indi rectly by the standards labshyorator y as in the case of RF power (above 10 mW ) modul ation (both AM and FM) and harmonic distortion Until re ce ntly there did not even e xist an NBS s ta nd a r d for such an imporshytant quan t i t y as audio fr equency phase a ngle (j)

In the third level or c a l i bra t ion laboratory these mUlti-range precision instruments are then used f or c a l ibr ating test instruments and e quipment such a s multimeters oscilloscopes and signal ge ne ra t o rs Depending o n the c ali shybration labor atory the number o f range s and t e st points covered in the calibration pr oshycedure varies With the l arg e number o f types and models of te st equipment ava i l a b l e t oday many calibration o rg a n i z a t ion s simply rely on the c a l i br a t i o n procedure recommended b y the manufacturer Ot he r s may c hoose alternati ve or abbre vi ated procedures

Finall y the test instr uments a nd e q u ipme n t are t aken t o the place of end use such a s manufacturing plant r epair de pot or mainshytenance facilit y In this tr ansfer the te st i n s t r ument is moved fr om the l aborator y to the o perational environment The que stion ar ises whether the calibration resu lts are applic abl e a f t e r such a transfer

I n the pr eviously described hier archy the likelihood o f introd ucing unacceptably larg e errors is espe ciall y signific an t in the case of ATE and other c omple x test equipment Th e dif ficulty arises from the large number o f available measureands and their ranges fr om the intricacies o f the s wi tch ing networks at the unit-under-te st (UUT) interface from the fact that the present s y stem c an g e nera l l y

support o n l y stati c o r steady-state c a l i b r a shytions and fr om the crucial r ol e that the s oftware p l ays i n the o verall measurement a c shycur acy Be caus e o f its si ze most ATE can no t be brought t o the c a l i b r a tion labor ator y for periodic c a l i b r a t ion o r ve ri fi cation Even if it c o u l d be tr ansported the pr e cision equipshyment in most c a l ib r a t i on laboratories is not suitable for qui ck a nd c omp re he ns ive verifi shyc ation of ATE Conseq ue n t built- in standards andor selecte d ATE modules ( d r awe r s ) are often r emo ved f or testing in the standards or calibration laborator y Al t e r n a t i ve ly the performance o f ATE can be c hec ke d b y means of selected UUTs with known characteristics Ho we ver these ver i fic a t ion pr ocedures c a n no t be c onsider ed equi valent t o a compre hensive s ystem c a l i b r a t ion at the UUT terminals The use of built-in standards and the implementashytion o f an y s elf-calibrati on pr oc edures while e s s e n t i a l does not obviate the ne ed for (and should be c omplemented by) i ndependent ca l i shybrati ons

DYNAMI C TRANSPORT STANDARDS FOR ATE CAL IB RAshyTION

In o r de r t o i mprove support o f the pre sent calibration hierar chy particularly in v i ew o f smart dig ital instruments a nd comple x ATE it has be e n pr opo s ed that NBS p urs ue research de sign development a nd dis semination of certain d y nami c transport st andards (DTS) ( 4 ) Th e ob j e cti ve f or introducing DTSs into the c alibration s ystem i s to overcome two wea kshyne sses in the pr e sent s ystem-- (l ) t he lac k o f ad equate ATE c a l i b ra t ion in its o peratio nal envir onment under operational conditions at the UUT t erminal s and (2 ) the extensi ve rang e e xtension and bootstrapping activities in the building up o f mUl ti-par ameter multi-le vel standards in n ume r o us standards a nd calibrashytion l abo ra to r i e s i n order t o achie ve tr aceshyabil ity t o national standards at NBS

As contr asted with the pte s e n t - d a y transport s ta nda r d s described e arlier these DTSs would ha ve the a t t r i b u t e s described below

(a ) Designed t o provid e mUlti-parameter and multi-level stimul us and measurement v a l ue s with a limited set o f c a l i b r a shytion reference points whi ch are indeshypendently monitor ed u nd e r statistic al c ontrol

(b ) Desig ned t o c alibrate ATE o n a dynamic a s well as on a s ta t ic basis (ATE t o be e xercised at its operati ng s peed steady state and transient par ame t ers of the signals t o be c o n s i de r e d )

(c) Designed to interface mech ani cally a nd electricall y to standard multi-pin conshynectors and a da p te r s utili zed for autoshymati c t esting purposes

(dl Ch a rac t e r ize d and a ble to function o ver rel ativel y wide e nvir onmental and o pe r shyating cond i tion s including the presshyence o f el ectromagnetic in t erference Transportable a nd us abl e in working e n shyvironments o f ATE

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(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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- 28 shy

(e) Designed to con tain built-in microcomshypu te r s for data logg ing for re mote proshygrammability via s t a n d a r d buse s (eg IEEE-488) and for digital processing of data and c o n t r o l signals of the stimulus and measurement hardware

(f) Designed for rapid calibration against higher echelon standards and to contain extensive self-diagnostic means

Some of these attribute s can be f ound in cershytain comme r c i a l l y available signal sources calibrators and measuring instrument standshyards t oday Where these products have the above characteristics i n sufficient amount they c a n be adapted as DTSs Since it may not be c o mme r c i a l l y viable for indus tr y to invest in the RampD leading to more sophi s t icated DTSs there may be a role for NBS in deve loping prototype DTSs that wou ld e xhi hi t mor e if not all o f the above attri b t s i nc e t he reshysults o f NBS work would be a vai la bl e to the whole industry t hese proto t y pe s ay then beshycome patterns for the ind u s t r to adopt and commercialize

One of the gener ic resea rch p r oble ms t ha t NBS will addre ss as part o f (a) a hove is the generat ion char ac teri zat ion and measurement of time-de pende n t sig na ls o ver a wide dynamic range Th a t is NBS wil l undertake the deshyvelopmen t of DTSs whose stimulus and meas ure shyment par amete r s a r e programmable and known to within a specif i ed accuracy It is with such a DTS that the real-time measurement capabil shyities of electronic test equ ipment can be ascertained under conditions which stimulate the testing of a UUT

Three basic types of DTSs c ompa t i b l e with generic kinds of ATE are suggested (4)

1 DC and low frequency

2 Pulse and digital logic

3 RF and microwaves

In practice more than these three basic types may be required to obtain the necessary flexshyibility Co nc e p t u a l designs have been conshysidered for all three types but only the dc and low frequency DTS will be described here in greater detail

PROPOSED DC AND LOW FREQUENCY DYNAMIC TRANSshyPORT STANDARDS

A block diagram of the d c and low frequenc y DTS is shown i n Figure 2 The architecture and hardware are similar to those of the third generation ATE It is proposed to de velop it f or the highest possible accuracy and suppor t it as a t r a n s po r t a bl e standard

1 Ba sic Operating Concept

This DTS consists o f a d ual-channel signal source and a dual-channel sampling instrushyment (voltmeter) The i np u t and output signals are digitally synthesized and or sampled sinusoidal and o t he r wave forms can be synthesized or measured a nd each o f the stimulus and measurement channels can be independently cont rolled The time and phase relationships among the four channels are accurately known versatility with moderate t o high accuracy performance directly traceable to ba sic NBS s tandards is important for ATE applications The i nc o r po ra t i o n of both signal s ource and signal measurement capabilities pe r mits internal self-checking techn iques

2 Range and Accurac y

(a ) Waveform types sinusoidal tri shyang Ie square ramp st ai rc a s e pulse-train and selec t e d arbi shytrary waveforms

Frequency range d c to 1 0 0 kHz

Voltage range 100 mV to 100 v

Voltage resolution 1 0 l ~ to 10 mV depending o n voltage a nd frequenc y range

Pe a k a ve rage or rm s vol t a ge acshycuracy (at the 7 V r ms leve l ) 001 of full-scale range (FSR) dc to 10 kHz degrades to 01 of FSR at 100 kHz

Linearity of ramp and tr iangle waves (at the 10 V pe ak leve l ) +0005 of fSR d c t o 10kHz

Risetime (transition duration) on square wave and pulse t ~ a i n s (at the 10 V peak level) lt 5 0 n s f or l oad time con s t a n t s of 10 n s or less

Settling time of st e p change to +001 v a l ue (at the 0 V l e ve l ) lt500 ns for l oad time c o n s tants of 10 ns or less

Phase difference accuracy between channels (e qua l ampl i tudes o n both c ha n ne l s ) +0 5 mr a d t o 10 kHz degrades to +-mrad a t 100 kHz

(b) Sa mpli ng Vol t meters

Waveform types any periodi c arbishytrary waveform (having a maximum frequency component of 100 kHz)

F r e q ue nc y range dc to 100 kHz

Vo l t a ge r ange 100 mV to 100 v

Vo l t a ge resolution 10 ]JV to 10 mV depending on th e voltage and freshyquency range

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

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the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

Peak a verage or r ms vol tage acshycuracy (at the 7 v r ms level) 2001 of FSR de to 10 kHz degrades to 01 of FSR at 100 kHz

Phase difference accurac y between channels (sinusoidal signals o f equal amplitudes) +0 5 mrad t o 10 kHz degrades to 25 m-rad at 100 kHz

3 ATE Pa rameters That This DTS Will Cali shybrateVerify

DC and ac voltages average power harmonic d i s t or t i on r spectrum an alysis impedances network analysis--transfer functions transfer impedances and admittances phase angle

4 ATE Parameters (Low Frequenc y ) That This DTS Will Not calibrate Verify

Signals at voltages above 100 Vi parameters at frequencies above 100 kHz (1 00 kHz to 1 MHz is still considered as low frequenc y however it may not be able to accommodate such fre quencie s in t he pro posed package a separate vo l t me t e r and signal so urce may be required)

ACCURACY ASSURANCE OF DTS

To ensure the accuracy and proper oper ation of a DTS cer t a in general characteristics are highly desi rable (1) the abil ity to q ui c kl y and fully c a l i br a t e or ch e ck the DTS against the h i g he r acc ur ac y standards (2) the ability to perform limited s e l f - c he c ks while in the field and (3) the provision for testability o f the internal ele ctronic circuitry

In the dc and low frequency DTS we are basicshya l l y concerned with the accuracy of pe r i od ic waveforms--those that are generated and meas shyured by the DTS Therefore the r equirement for a very accurate waveform analysis facility is apparent possibly based on the use of equivalent time samping techniques With this technique a periodic wav eform is accurately measured by sampling it ove r many period s Howeve r this t e chnique while compr e he ns i ve c a n be ve ry time cons uming It is proposed t herefore t hat equivalent time sampling methods be complemented by automati c rms vo l t shyage cali brations over the entire frequenc y a nd voltage level ranges Since digital-to-analog (D A) and analog-to-dig ital (A D) conve rter s a re crucial c ompo ne n t s in the dc and low freshyq uency DTS a facility should a lso be avail shyable t o full y c ha rac te r i ze data converter s on bo t h a static and d ynamic basis

The accuracy of the DTS must be ve r ified at selected critical values wh ile it is in field use For the proposed de and low freq uenc y DTS advantage c a n be taken of its inherent redundancy Since the re are two identical source channels the outputs can be c ompa r e d directly A similar comparison procedure can be performed for the measurement c hanne l s

Furthermore the measurement c hanne l s can be compared with the source channels for conshys i s t e ncy Such a procedure will detect f ail shyure s and signif icant changes in one channel relati ve to the o t he r Howe ver it will not detect for e xample similar d r i fts in two phy s ical l y identical chan nels It will also not detect e r r o r s in the stimulus and measu reshyment software if the same s o f twa r e is used for both channel s Insofar as po s s i bl e the DTS must a l so be ve r i f i ed at at least a fe w cr iti shycal points by an independent method These methods would 1 ikely r equire the use of some of the basic fi xed value or limited- range standshya r d s described earlier

It is also proposed to incorporate testabili ty schemes in t he DTS to provide efficient checkshyout and maintenance procedures and to detect failure modes Being potentially a complex structure of e l e c t r on i c modules and componshyents the DTS will 1 ikely require built-inshytest (BI T) circuits which can d i agnose imshyproper functioning of at least the c r i t i ca l digital portions of the DTS electronics Se vshyeral BIT me thod s presently exist for t he sel f- chec king or s e l f-te sting of dig ital circuits (5 ) These BIT circuits would not o nly help in diagnosing fault s and minimi zing the maintenance time of the DTS but could also increased the level of c onfidence in the per shyforma nce of t he e quipment as a standard (ie no subtle degr adat i o n effe cts)

OVERALL ATE CALI BRATI ON STRATEGY

Fi g ur e 3 illustrates the method whereby t he presen t c a l ib r a t i on ser vice s and MAPs pr o vided by NBS for basi c electrica l quantities can be augmented with the c apa bi l i t i e s pr oposed f or a high accurac y DTS

As indicated by the so l i d arrowed line s the normal pa th of support by mean s of an NBS DTS is th rough a key standards o r c a l ibration laboratory This DTS i s periodically shipped between NBS a nd the key laboratory Comshymercial roll-up standard s whi ch serve as wor king accuracy DTS s (dedicated perhaps to a specific ATE system) a re then c a l i br a t e d using the NBS DTS and any other appropriate standards The commerc i a l DTS in tur n is periodicall y us ed to provide a s ystem c a l i shybration at the UUT interfac e of the ATE This periodic t esting of s ystem performance serves as a ve ri f ica t ion t hat built-in self-tests a re main t a i n i ng t he q ual ity of the measurements of the s ystem The removal of certain core stimulus or measu re ment e quipment o r built-in st andard s for t esting and or calibration in a laborator y is s t i l l optional of c o ur se but may not be ne cessary

As indicated by the dashed lines there may also be a particular requirement or capabil i ty in certain ATE systems that would need the accuracy provided by the NBS DTS As s umi ng that there is interface compa t i bil i t y and s ufshyficient e nv i r o nme nt a l immunity (attributes listed in (c) and (d)] such a d irect pa t h to

- 2 2 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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The Calibrat ion Ne ws l e tter i s orien t e d t o medic al calibration and t raining

CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

the na tional standards via the NBS high acshycuracy DTS can then be taken Thi s path wou l d have to be t aken in the initia l stages of de veloping the DTS

Figure 4 s hows a more detailed illustration of the DTS c o nce p t and c a l ibr a t i o n support stratshyegy Because o f the v a r i o us kind s range and l evels of the c a l i b r a t i o n p a rame te r s of intershye st and the need for a c o ns i de r a b l e amount of documentation a ut oma t i o n of t he c alibration s upport sys te m i s e ssential As discu s s e d before an a utoma t i c test s y s t e m i s indicated at NBS This is also required at the key standard s or c alibration l aborator y to intershyface with t he DTS a nd make the nece ssary c omshyp a r iso n measurements

Starting at NBS the a ppropria t e n a ti o na l la bshyo ratory standards (item 1 in Fi g u r e 4 ) are us e d to c a l ibra te t he va r i e ty of pos s i b _e quantishytie s within the c a p ab li t y o f the NBS DTSs ( ite m 2) By vi rt ue o f at t ri b u te s l is t e d in (e) and (f ) and BI T c a pa b i l i t y he time a nd effor t requi r ed toco rn p l e el y c h a r ac t e rt ze t he DTS c a n be min i mi ze d En Ji r onmen t a l t e s ti ng of the DTS wou d a l s o be pe r f o rme d a l tho ug h it i s not shown on t he d i a q r ai f o r s a ke of s i mshyplicity

At the key sta nd a rds or c a l ibr ation labor a to ry leve l t he commercial DTS (ite m 5) is calishybr a t ed ag ainst t he NBS DTS Su ch a laboratory ha s wor king standard s (item 3) as wel l a s precise calibrators f o r e xa mp l e p r o g r a mshymabl e precision de and a c s o u r ce s (item 4) These items a r e broug ht into the calibration pr oce ss in two ways-- l ) in con j unction with the NS DTS they c ould facilitate the calishybra tion o f t he c o mmerc i a l DTS a nd (2) more importantly the NBS DTS may be used t o calishybrate t he s t a nd a r ds cali brators and other p r ec ise test instruments in t he key laborashyto ry Many o f the second a r y s t a nd a r ds and mo st of t he t est instrumen t s are pr ogr ammable via s tand a r d bu s es (e g IEEE-4 8 8 ) The a utoshymatic te st s y s te ms here at t his leve l in conjunction wi t h t he NBS DTS would there f ore pe rfo r m the ta s k o f upd a t i ng t he c orrections t o th e inventory o f s t a nd a r ds and te st e q uipshyment Ei t he r during o r be t we e n update c ycle s wit h t he NBS DTS the automati c test s ystem s would be us e d t o ve r i fy o r t o make c o rr e ctions t o the commercial DTS whi ch c an be o f t he f o r m o f roll-up standa r ds o r cali brati on c onshysole s whi c h s erve a pa rticUlar c l a s s o f ATE

The o n- s ite ATE systems (item 6 ) ar e the n tes t ed by way of the commercial DTS (item 5 ) t o pr ovid e the ne e ded step in t he traceability pa th fo r s t i mulu s a nd mea s ur ement parameters at t he inte r f a c e o f t he ATE sys te m a nd the DUT I f pos si ble these c alib ratio ns o f t he ATE sys tem s ho u l d include the e ffects o f UU T inshyt e r f a ce device a d a pters c abl e s c onne ctors e tc Due t o t he large n umbe r of s uc h special inter face h a r d wa r e however it may be imshyp r a ctical t o i nclude the effect s in e very case but at least th e se t e s t s will ve r i f y s t i mul us o r measur eme nt val ues at the UUT c onnector panel

EXPERIMENTAL PROJECT WORK

A project has now begun at NBS spon sored by 00 0 the J o i nt Logistics Comma nde r s (J LC) Panel o n Au t oma t ic Testing (S ubta sk 307 02) which ha s the o verall o b j e c t ive of es t a bl ishshying o pe ra t i o na l ly adequate and sc i en tificall y va l i d t e chniques and stand ard s for t t e c a l i shybr ation of c o mp lete ATE systems f f o r t s under this progr am a re be i ng coordinate d with the DoD J o i n t Te chni cal Coor d i na t i ng Group fo r Metrology and Ca l i bra t ion and the DoD Ca l i shybra t i o n Coor d i na t i o n Gro up (CCG)

As part of th e maj or mil estone s in th is p r o j e c t t o e val uate e x i s t i ng c a l i b ra t i o n t e chniq ues t o ident i fy p r o ble ms in calibration supper t o f c urrent ATE systems and t o i de n t if y r e qui re shyment s fo r c a l i b r a t i o n s up po r t o f ne w ATE s ysshyt ems the fe as i b il i t y of the DTS c o nc e p t is be i ng pur sued In order to o bta i n some i n i t i a l results in a reasonabl y short time wo r k i s no w un derway to perform on-site tes ts o f t h r d generation ATE system (used by a l l th r e e se r shyvices) f o r two clas ses o f e le c t r i c a l e a s ure shyments (l) dc and low f r e quenc c ( r rn ) vo l t a ge measurement s to 10 MHz a nd ( 2 ) o ulse duration measurements o ver the r a nce f r o m 5 ns t o 1 s

Fo r these initial e x pe r i me nts a c omme r c i a ll y a vaila ble pa i r of instr uments (d c ac s ou r c e and p ulse ge ne ra t o r) is being c har acte r i ze d and c alibr ated against NBS la bo r a tor y st and shya r d s Te sts ha ve been s hown h at t he dcac s o ur c e has the capability t o pr od uce r e f e r e nc e le vel dc vo l t age output s from 100 rnV to 20 0 V th at are at least an o rde r o f mag nit d e more accurate t h a n the claime d mea s u r amc n t a c c ur a c y of the SUb j ect ATE sys t e m Fo r a c vo l tage le vel s fr om 30 0 mV t o 14 0 V r ms pr e l i mi na r y te sting indicates agai n t n a t the s o ur c e i s a factor of at least 5 times more a c c urate t h a n the expe c t e d ATE me a sure me n t accuracy deshypending o n both the ac vo l t aq e level and at frequenci e s up to 50 kHz

Similar e ffo rts are be i ng made t o char a c t e r i ze t he pulse g enerator so t ha t i t t oo has a known per f ormance th at w 11 exceeds t he c laimshye d p u l se width meas uremen t a c c u r a c y of the su bject ATE s y s t e m The t o ma t i c PUl s e Measshyurement Sys t e m (APMS ) a t he NBS- Bo ul de r labshyoratorie s (p r o v ides t he ~B S calibratio n o f p ul se a nd impulse ge ne r a t o r s ) is be i ng used to c a l i b r a te t he pul s e r a nsport st a nd a rd It will p r o v ide p u l s es wth 20 5G 100 200 and 50 0 nanosecond wid t hs a t t he 50 per cent l evel to a n a c curac y o f 1 n s o r be t t e r

A s ix-foot coaxial c a ble t ogether wi th a p p r o shypr iate mat n9 con ne c tors and switche s conshytained in a sta ndard UT adapter bo x is use d t o in t erface t he s o u r ces mec hanicall y to t he ATE s y s tem The pe rfor ma nc e of both the dca c souc re and the p ulse ge ne r a to r is being e s tabshylished wit h s peci fi ed loads at the o ut p ut pi n s o f t he multi-pin c onne ctor which plugs in t o the UUT i n te rfa ce p a ne l

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CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

CONCLUSIONS

In this p aper we have discusse d c onceptuall y a n approach based o n dynamic transport s t a nd shyards for c alibr ating ATE This approach has two key ingredients designed to ove r come the deficiencies of the present calibration apshypr o ach (1 ) ATE i s c alibrated at the UUT t erminal s in the o perational environment over the r epresentative parameter s and ranges a nd (2) the traceability be t wee n the ke y indusshytri al standards c ali brati on labor atory and NBS is provided thro ugh a multi-par ameter multi-r ange s t a nd a r d calibrator o r DTS The ne w a pp r o a c h is considered as an evo l ut i o n a ry outgrowth of NBS response to t he chang ing support requirements f or modern instrumentashyti on S i mi l ar appr oaches f or the calibrati on of t e st instruments and s y stems in situ al shythough o n a mor e 1 i rn i t ed and spec i al i ze d scale have be en proposed a nd use d by o t he r s (6 7 )

I t shoul d be emphasi zed th at at t his stage the acti vit y at NBS is largely o f t he technic al planning a nd anal ysi s t ype exc e p t f or the project s ponso r ed through the DoD-JCL Pa ne l mentioned in this p a per No commitment has been mad e t o commenc e a large-scal e ATE p r oshyg r am nor does t he p r o po s ed a pproac h r epresent a f o r ma l NBS policy

Initial ideas at NBS f or ATE calibration by means of DTSs were publishe d first two years ag o (48) wi th i nvi t at ions for comments fr om the tec hnical commun i t y The c omments h a ve be en fa vorabl e and s uppo r t ive With the pubshy1 i catio n o f this paper whi c h pr o vides g re a t e r detail than describe d be fo r e we i n vite f urshyther c omme nts

REFERENCES

1 B C Belanger Traceability An Evolving Concept ASTM Std News Vo l 8 No I January 1 9 80 pp 22 - 28

2 L J Kieffer Editor Cal i br at i o n and Related Measurement Services of the Nashytional Bureau o f Sta ndards NBS Spe c i a l Publicati on 25 0 Marc h 1981

3 B A Bell Pre ci sion Electronic Te st Eq u ipme n t Ca l i b ra t ion St a nd a r d s at NBS Proceedings o f ATE Se mi narTes t Inst rument Co n f e re nc e January 1 98 0

4 B A Bell et al Challenges i n Ac hie v shying ATE Traceability t o NBS middot Pr oceedings o f AUTOTESTCON 79 Se p t e mbe r 1 9-211 97 9

5 J B Cl a ry amp R A Sacane Se lf Testing Comp ut e r s IEEE Compute r Vo l 1 2 I Oc t o be r 1979

6 J C San t o PATEC An Air Force Ap p r o ach to ATE Calibration Proce e ding s of AUTOshyTESTCON 7 9 Se p t e mbe r 19-21 1979

7 G S i der is F i e l d - I nstr umen ta t i o n Ca l i shyb r a t i o n Moves Ahe ad in Navy I sMECCA II Ele cshyt ronic Desi gn IS July 19 19 79

8 An Appr oach to Metrolog y in S uppor t o f ATE Under Co ns i d e r a t i o n at NBS Pr e c i s i on Measurements Assoc i a t ion Ne wsnotes Fall 19 79 and NCSL Newsletter Vo l 2 0 No1 March 1 980

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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copies for yo u

THE CALIB A IO N NEWSLETTER BY

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- 25 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

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SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

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CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

BS middotIe s r a me n _ Ser vi ce s

NBS RESPONSE TO REGION B FEEDBACK SESSI ON

ON MEASUREMENT SERVICES

EDITORS NOTE For the past two years NCSL s Region 8 has scheduled a f ee dback session at it s Jan uar y meeting to provide an opportunity for those who use National Bureau of Standards (NBS ) calibration services to express their views Th i s ye ar f our NBS staff members (Bascom Birmingham Br i an Belanger Joe Simmons and Norm Belecki) attended t he session organized by Laurel Aux i er of Beckman Instruments

The NBS representati ve responded orally to the point s raised at this meeting and Brian Belanger s Ubsequently submitted a written response to Laurel Auxier Since t he in f ormat i on i n t his transmittal ma y be of inte r es t to othe r s in NCSL Brians edited response is reprinted here

It is gratifying to hear tha t our c us t ome rs are pleased with the r esponsi veness of our sershyv i c e s in the areas of mass gage blocks and pulsed power and e ne r gy I have c ommun i c a t e d this information t o those responSIbl e for these services

I was disturbed t o hear a comment at the meeting to the effect that some NCSL members are unenthusiastic about r e aporid i nq to surveys or pro viding feedback to NB S conc~rning our ser vices because the y are not confIdent that any acti on will be taken I can assure you and them that the Bureau takes very seriously an y and all comments concerning our services For example as a result o f f ee d bac k from NCSL members and other users during t he pa st two years NB S ha s taken a number o f significant act ions i ncl ud ing repr og r amming pe r sonne 1 into c al i b r a t i o n activities and providing adshyditi on al funds f or equipment and personnel

I belie ve you are familiar with a h i g h- le ve l review of NBS calibration ser vices that took place a pprox i ma t e ly two ye a r s ag o in r esponse to exp ressions of concern for health of these services f r om both within NBS and from the customer community a letter from one o f NCSL s members ser ves to provide focus f o r some o f the most s i g n i f ic a n t i ssues The Di rector and a high-le vel management commi ttee have s pe n t a considerabl e amount of time reshyviewing measurement services at NB S and ha ve paid particula r a ttenti o n to fee dback fr ltgtm users in thi s process A seco nd maJor calIshybr ation review has j us t been completed to permit the Director and his Executive Board to determine wha t progre ss ha s been made a nd what accomplishments ha ve been achieved since the first re view

In addition to the specific actions mentioned above regar ding personnel reassignment s ~ nd funding increase s a permanent Ca l Lbr a t i on Ad vi so r y Group (CAG) has bee n established to ad vise l i ne management in the future The CAG recen tly issued its fi rst annual report on the hea l t h of our ser vice s a nd mana gement has

already initiated ac t ions t o add r es s the conshyce r ns identified The CAG Report also reshyfl e eted feedback from last years Regi on 8 se ss ion

Our calibration ser vice s are c ons t a nt l y e vol ving to keep pace wi th c ha ng i ng te chnology an d we engage in a continuing effor t to keep them re sponsive As wi th a l l programs we must balance the desire to upgrade and provide new services with the needs and available reshys o urce s Sometimes budget and slot restraint s pre vent us from responding as quickly as we would like Howeve r we are trying as best we c a n to respond t o inputs recei ved fr om NCSL and o t he r c us tome r s

The paragraph s whi ch follo w r espond to ~he

specific comments made orally at the me~tIng

and to Le written c omme n t s that I r ece i ve d

Ca ncell ing of Measurement Se minar Metrolog y of Mode r n El e c t r o n i c Instrumentation

Concern has bee n expr e sse d over the cancelli ng o f the above s e mi na r Th i s action was taken in respons e 0 COffime n t s and information from a number o f po t e t i c l t t e ndee s and their ma nshyag e men t s t o t he e ff e c t t hat bu si ness cond ishytions ge e r e l y woul d not pe r mi t the usua l l e ve l o f s ppo rt [ r om t he commerc ial s ec to r In add it i o n i t appea re d that increasingly s t r i nge n L budge t s at a l l leve ls o f gov ernment would Ll ke 1y r esult in a still f ur t he r deshycrease i n a t t e ndance Despite the strong negati ve iqria Ls recei ved this ye a r the El ecshytrosyste ms Di v i s i o n i s no w coris i de r i nq re shysched u i no t he seminar for 1983 The plans in volve ear l ie r noti ce to the measurments comshymunity inc lud i ng information on the minimum and maximum number of attendees and t he preshyreg i s t r a t i on cut-off date NB S will supply a ppr op r ia t e in formation to this Newsletter a s soon as our plans become f i r m

Mechanical Shoc k Calibration

NBS is we ll aware of the interest in shock calibrations We are reviewing carefull y t he prior ity that this a rea s hould h ~ve and t~e

avai l a ble r e s ources which are l I mIted at t hIS time Those with a n interest i shoc k c a l i shybr at ion should communicate their ne eds to Mr Dan Fl ynn Chief Mechanical Production Metrology Divi sion (301921-356 5 )

Si li con Dete c tor Ca l i br a ti o n System

The Detector Respo nse Trans fer and Intercomshypar ison Package (DRIP ) is a ren tal pr ogram i n which a cal ibrated s i I i con cell and s e ve r a l

- 26shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

c

SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

FtE- 8 )2)P1 -0 ~aIrwllJJ l l u E e ~ )

bull lIlTlOll Al llURpoundAIJ ornAJIOARDS PHONE NUMB ERS

I

A

This NBS p ublication coul d be ve r y useful if you h ay many deal ings with t hem All proj ec t s ar e l i s t ea alphabeti cally ( 4 8 pages) wi th n ame s an d phones as shys igne d to ea ch Ken Armstrong c o ul d pr ob lJb l y l CC

copies for yo u

THE CALIB A IO N NEWSLETTER BY

CALlBAATlON I CONSULTIN G SEfWICES INC 111 n BIG BEND DftI V[

DES PLAIHfS III 600111

ISBUEJ J A N RI I9li1

CONTENTS OF THlS ISSUE P 1middot blrodlCQlmaolheltlbrt tgttnlti~ 1

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bull AnlJyWcf48J ObcwUotd frCmOMP Tnm Ih bull CalIbhUODItcWI fnlmrnA [)n0 poundroor-oOClt JIepcJn4 e

INTRODUCTION TO THE CALIBRATION NEWSLETTER Nmn Jyen 1fiIl1Lampl cha~ ill Ule m~llot daLl uWy u~ bmq J to ~

~ )Mt bo t=rP or artirffOl Artid Oll etibr t IOll ProgllL[I nil iluflrwtlMlllfn COtIuW8d III iIJIa ~e ~ p

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0IIIll ( PDA te3l1bMlnI lItJD wrl~ of II Iptci flC IUpKI III ~b 1 m br dctribullol odr tImshy Jort 6 tJr lpJ1ieampllot CllIi lra tiob N~Lu b tu~ b Y(lU II ntllJ-ri Lhtht -xmd - ampppNTshy IrUdn lull i 61Dd IJ 1bullbulldl lIlJ plar-1 ~bull u plC~d II middoth h bII iIJooUrdllflPil3NaI 31 ~ 1 J M1Ons l-1tw atltl O(lrl UII ~ o dO jl

Wbb ~ --J ~ tor Lbo- ~JoIlIrognallDll_fJU rijlht

THE MINI PROPOSAL

lMO lJpdatecopy-the opinionated lnformatlon report by Hyermiddot 1 on NaUonaJ Internatlonal and Foreign Developments

1 ~n~urA6_g ~) and Events Concerning Standanlltatlon - Product Certtftcauon - Laboratory Accredttation

n~ CoO U( e ~ cr- l S dB - lIo ~ lt t l k~~ l ~ l I ~I ~ H ~_Illl

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CONTACT Th~ H r l e y Or gan i z ation 1 I Todd s Road Ridge f i e l d CT 06 877

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IDIl ~U1 Lhr 0llCUll0i1Zlr-1olyovr e-IPolci~ ~ bo far ~ ) OltUbOtll pIUI l ) 6 1 ~b I 0 8lId PQIJllDl -yuz1-alhl-

The Calibrat ion Ne ws l e tter i s orien t e d t o medic al calibration and t raining

CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

c~librated o p t i c a l filters are rented to cusshytomers f or a period of one month NBS calishybration measurements are performed before and after the customer s measurements Thus it is inherent in the DRIP program that there will be a delay of about three months before a formal report of calibration i s issued It should be noted howe ver that the first set o f NBS data is supplied to the customer al o ng with the DRI P pac kage itself This should pe r mi t the customer to spot an y anomalies at the time of his measurements since the s e c o nd NBS measurements ha ve so far re sul ted only in small corrections Ques tions regarding t h i s s ervice should be referred to Mr Don McSparron (301 921-3613)

Pressure Ca l i b r a t i o n s and Re s i s t a nc e MAP

NBS has recently reviewed the piston gage c alibr ation process and conc l uded tha t the la rgest decrease in turnaround t i me can be realized by initiating a s c he d u l ing system where e a c h gage is calibr a d i n a r e s e r ve d time slot p r earranged wi t h t he c us t omer before his gage is sent t o NBS I f th i s s yste m works as anticipated it co ct fo r eX2rnple reduce the turnaround t i e c r s i mp le oil or g a s piston gages fro m t he 19 B average of f o ur months t o approx i ma t e y fou r week s The l o ng 1 98 1 t ur na r cu nd Ime wa ~ pa r t l y due to a arge backlog th a t acc umula ted ~h i le the air p i s t o n g age calibr a t i on tes t s t a nd wa s s h u t d o wn f o r f o ur mo n t hs f o r tr oub l e s hoo ti ng and re pa irs The back log i s now c aug ht up Sc he d ul ing s hould at least a l l ow us to avoi d t he accumushylation of back log s dur ing predicted d o wnt i me s such as the 19 8 2 In ter national Compa r i s o n o f S t a nd a rd s The success of this scheme wi l l d e pe nd on o ur customers calling ahead to preshyarrange t he cal ibration date We will be con t acting them by letter to ask for the i r cooperation

With regard to the delays in the reverse reshysistance MAP e xpe r iment we recognize that NBS must assume t he overall responsibil i t y for keeping MAP prog rams on schedule even though many other parties are involved and have speshycifi c r e s po n s i b il i ties Therefore we must simplY apologize to t he companies invol ved in this experiment for letting the d a t a reduction task fall se veral months behind schedule Norm Belecki has now analyzed the d a t a and telephoned the resul ts to one of the c ompa n i e s f or di stribution t o the others The transfer s t a nd ard s from NBS will be shipped in March as originally scheduled

Magnetics

It is o ur understand ing (a nd it was confirmed at the meeting by Mr Belzer) that the Navys Eastern Pr imary S tandards Lab will provide mag netic s calibrations for d e f e ns e contracshytors who c a n demonstrate a need for such sershyvices Sand ia in Albuquerque is pr o v i d ing ser vices to the Depar tment o f Energy weapons laboratories NBS is con t i n u i ng to gather information on possible needs for magnetics calibration services and NCSL members should

NBS Measurement Services

c ommunicate their needs t o us Contact Mr Fred Fic kett Electr omagnetic Technology Dishyvis ion at NBSBoulder (3 034 97-37 85 )

Q S t a nd a r d s and Mill imete r Waves

The Q standards that NBS p r e s e n tl y c alibrates can be used with both t he Boonto n 260 a nd the HP 4 34 2A Q-meters Unfor t una te ly t he i r manushyfacture has be en disc o nt i nued We ha ve had a few inqui ries about c a libration o f he new Q standard s de signed to suppo r t t l e HP 43 42 A but not eno ugh to justify t he ex~ n s e o f esshyt a b l i s h ng a new calibration serv i ce [ o r the m We would welcome the help of NCSL i n eva lua ting te full extent of the need f or suc h a se rvi c e We have never been asked to cal i b r a t e any special Q standards for the Marconi or Si me I S

Q-meters If NCSL is aware of a ne e d we wou ld like to know about it

At p r e s e n t the Elec tromagnetic Te c no l o g y Division can calibrate bo lometers i WR-22 waveguide up to 42 GH z using our WR- 28 sta nd shyard and bolome ters in WR-19 waveg i de d own t o 48 GHz using ou r WR-15 standard We expe c t to have a 6-port system and a powe r sta nd a r d wor king in the range 40-5 0 GHz a t he end of 198 3 We wi ll then be able to oerform c al i shybra tions of power attenuation - and ph a s e in e i t he r WR- 22 or WR- 19 We must c hoo se o ne or the other wav egu ide band and ne e d t he he l p o f NCSL t o decide which is mor e i mp o r t an Comshyments on these ser vices should be p r o v i d e d to Dr Robert Kamper at NBSBo ul d e r ( 30 3497 shy35 35 )

NBS management recognizes that we m st sysshytematically plan for our calibr t i o D se r v i c e s if we are t o provide adequa te s e r v o t o t he measurement community in spite of 0 r resource constraints Under these cond i 0 s feedback from our customers is even mo r i mpo r an t t h a n it might have been in the pa s bull We pp r e c i a t e your effor ts in arranging the f e e d ba c k ses sion and urge you to cont inue his pr a c t i c e I would encour age o t he r NCSL re g i o ns t o do likeshywise

-27shy

c

SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

FtE- 8 )2)P1 -0 ~aIrwllJJ l l u E e ~ )

bull lIlTlOll Al llURpoundAIJ ornAJIOARDS PHONE NUMB ERS

I

A

This NBS p ublication coul d be ve r y useful if you h ay many deal ings with t hem All proj ec t s ar e l i s t ea alphabeti cally ( 4 8 pages) wi th n ame s an d phones as shys igne d to ea ch Ken Armstrong c o ul d pr ob lJb l y l CC

copies for yo u

THE CALIB A IO N NEWSLETTER BY

CALlBAATlON I CONSULTIN G SEfWICES INC 111 n BIG BEND DftI V[

DES PLAIHfS III 600111

ISBUEJ J A N RI I9li1

CONTENTS OF THlS ISSUE P 1middot blrodlCQlmaolheltlbrt tgttnlti~ 1

bull Vba~ Ll ~ Dllib r~Pn~ lloDtnmlc1 L bull middotTbooMlT~

2 a

middot Teflrocglbe~ bull bull CwTomtcubN- tlou EvaawCwnN bull C4CSJtn8tlJcly Y aliIa IiorOu~doCamplib tlll lJ Slaquovle- (

- L lh m Dampllc ll ~-CIlIampd ~e- VthdaLiClll (

bull cIhn tonE~ NJJ(IODUamp1~ shysbull SubtonpuolIFOIUI

bull AnlJyWcf48J ObcwUotd frCmOMP Tnm Ih bull CalIbhUODItcWI fnlmrnA [)n0 poundroor-oOClt JIepcJn4 e

INTRODUCTION TO THE CALIBRATION NEWSLETTER Nmn Jyen 1fiIl1Lampl cha~ ill Ule m~llot daLl uWy u~ bmq J to ~

~ )Mt bo t=rP or artirffOl Artid Oll etibr t IOll ProgllL[I nil iluflrwtlMlllfn COtIuW8d III iIJIa ~e ~ p

CeJJ brftiaQ N II blLft ~ 1IIlKatif olhatfOdulI1lCl1b l13ilJlalirn r~ lI r p lb1u bulS lmiddot e

j awnaJ ildndmK eurttml hLp~ IIddhJoo ~d Ul fttorotdllJy lei middot ot lIlI OptiCIl l btll 4ll0 D fIIlnshyiAgI Ul d ean tlilSltnlgtooQoll lD tht m-u dnI-=h topicD u tual or Y(IW ~n d I nd ~rcI _6 ~ bshycl1lhavgt-nY UeelirmtllcbBmItJ ~rIliqIJ CoOIJlO1-ulrllllol~ nPUDIIl w iI 1110 d I lI u d lad LI ~~ tbIoMampIrt

0IIIll ( PDA te3l1bMlnI lItJD wrl~ of II Iptci flC IUpKI III ~b 1 m br dctribullol odr tImshy Jort 6 tJr lpJ1ieampllot CllIi lra tiob N~Lu b tu~ b Y(lU II ntllJ-ri Lhtht -xmd - ampppNTshy IrUdn lull i 61Dd IJ 1bullbulldl lIlJ plar-1 ~bull u plC~d II middoth h bII iIJooUrdllflPil3NaI 31 ~ 1 J M1Ons l-1tw atltl O(lrl UII ~ o dO jl

Wbb ~ --J ~ tor Lbo- ~JoIlIrognallDll_fJU rijlht

THE MINI PROPOSAL

lMO lJpdatecopy-the opinionated lnformatlon report by Hyermiddot 1 on NaUonaJ Internatlonal and Foreign Developments

1 ~n~urA6_g ~) and Events Concerning Standanlltatlon - Product Certtftcauon - Laboratory Accredttation

n~ CoO U( e ~ cr- l S dB - lIo ~ lt t l k~~ l ~ l I ~I ~ H ~_Illl

~)poundi1 (-tl1 flll ~ l o r ~ F~rl 1 ~ Cr u T b lt Jro ( d~lt~ 4 t~ ~ middot 1 - c

~ hnoll na~ ~ rl tJ ~l nd ~c~~d t i ~ or c ll jbull o ~ r d ~ ~ ~r~

~ r rl 13 tlH i ~ l u I ~r C ~ ~ll r t middot~i F C_ ~ w H tr ) ~ ~S~~

A Py t l ~ llur ~ t r ~ _~ e-n J j ni) ~ ~ ~lH er ~ - r L ~n01 Oil r lilr llrr-1 nlO~

J - H l F r ~middotUj ~ j l l t lIlt1d ~QO t~ I ~_ p It~ C ~~er ~p t ~ o

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CONTACT Th~ H r l e y Or gan i z ation 1 I Todd s Road Ridge f i e l d CT 06 877

ltgt)rl(l FDA ~ oeaIi bU 01l ill You r O l l~~ i invnl m n1 II CampCS I M ItU ~Dporaquo] ba ~ 01shylJrCz ~ 10 lOt 0 d~~eiM Lhl lwrtallmg A Cjb UCIlJ Pro_toDI III ~~ far flllto pri p lt po NLl~ 01 W belmllfJlWllunejduriltliaudl Ll 10WpWl Co ~YDla lerB ~b DC 120000 A M iw ft lJpo sll ol de-gtOfMIUI)ZWApin l oaO ~1prllp-a1D(ampII-PU ll l Clit1lt OtfI FOrm JUb m ltl e(I loll

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The Calibrat ion Ne ws l e tter i s orien t e d t o medic al calibration and t raining

CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

c

SEVERAL NEW PUBLICATIONS OF INTEREST TO NCSL MEMBERS

FtE- 8 )2)P1 -0 ~aIrwllJJ l l u E e ~ )

bull lIlTlOll Al llURpoundAIJ ornAJIOARDS PHONE NUMB ERS

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This NBS p ublication coul d be ve r y useful if you h ay many deal ings with t hem All proj ec t s ar e l i s t ea alphabeti cally ( 4 8 pages) wi th n ame s an d phones as shys igne d to ea ch Ken Armstrong c o ul d pr ob lJb l y l CC

copies for yo u

THE CALIB A IO N NEWSLETTER BY

CALlBAATlON I CONSULTIN G SEfWICES INC 111 n BIG BEND DftI V[

DES PLAIHfS III 600111

ISBUEJ J A N RI I9li1

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THE MINI PROPOSAL

lMO lJpdatecopy-the opinionated lnformatlon report by Hyermiddot 1 on NaUonaJ Internatlonal and Foreign Developments

1 ~n~urA6_g ~) and Events Concerning Standanlltatlon - Product Certtftcauon - Laboratory Accredttation

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CONTACT Th~ H r l e y Or gan i z ation 1 I Todd s Road Ridge f i e l d CT 06 877

ltgt)rl(l FDA ~ oeaIi bU 01l ill You r O l l~~ i invnl m n1 II CampCS I M ItU ~Dporaquo] ba ~ 01shylJrCz ~ 10 lOt 0 d~~eiM Lhl lwrtallmg A Cjb UCIlJ Pro_toDI III ~~ far flllto pri p lt po NLl~ 01 W belmllfJlWllunejduriltliaudl Ll 10WpWl Co ~YDla lerB ~b DC 120000 A M iw ft lJpo sll ol de-gtOfMIUI)ZWApin l oaO ~1prllp-a1D(ampII-PU ll l Clit1lt OtfI FOrm JUb m ltl e(I loll

oeaIib t1ll l[raquod u-ir tlt4 )0 ut e-t4 o j ou td40 ----0~l ~ CdtCSI l A ~bt tw ~ rolt ~ h

ad- bullbull ~Wlo_iampLlfnllW ampvm 11 lIll101 IlI U6() In ion llirm l- n~ pro (gtO famp Wll N n ~

tht HlBlfia1~ou- dliJ ~ ofhllod by Ctlil tlon CoD Mll ~ Jln tb ~ db l ~Igtl~t I rlshy aJtlng8orviQfol-nd Lcplf ~t lll t OIgtl vBd Campai l u rollJl B PN pollJ

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lar tIll pa t Ctlibr1tioa fncnm mwtipW tl oxnpampDy hat 111 llIllI Il4 ~ ll oa ltmu1s to Imp ~mr ll

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~ ~ iItIIlIl4 ptJMi bl l bnti mriPamp1bM-~~ aDlot~-b

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IDIl ~U1 Lhr 0llCUll0i1Zlr-1olyovr e-IPolci~ ~ bo far ~ ) OltUbOtll pIUI l ) 6 1 ~b I 0 8lId PQIJllDl -yuz1-alhl-

The Calibrat ion Ne ws l e tter i s orien t e d t o medic al calibration and t raining

CONTACT Cal i br at i on amp Con s ul t i n g Servic e s 977 Big Bend Drive Des Pl aines IL 600 16

- 28 shy

GTE N SL NEW NATIONAL VOLUNTARY LABORATORY ACCREDITATI ON PROGRAM (NVLAP) ELECTROMAGNETIC CALIBRATION SERVICES PUBLIC WORKSHOP

The National Bureau o f Standards (NBS) anshynounces that it will hold an informal public workshop whose purpose is to provide intershyested parties an opportunity to participate in the development of technical r e qu i rements of a l aboratory accreditation program (LAP ) for electromagnetic calibration services (Elecshytromagnetic Calibration LAP) under the Proshycedures of the National Voluntary Laboratory Accreditation Program (NVLAP) 15 CFR Part Te as amended (46 FR 37029 Jul y 1 7 1981) and to enable the NBS to secure val ua ble expert adshyvice to develop these requir e me nts

The workshop will start o n Th u r s d a y Jul y I 1982 at 100 pm and e nd Frida y J Uly 2 1982 at 5 0 0 pm

The workshop will ta e p I c e ~ t the Na t i o na l Bureau of Standa rds 32 5 Br o adway Bo ul d e r Colorado i n Ro o m 1107 of the Ra d i o Bu i ding

For Fu r the r I n f o rma c i o n Contact Robert Gladshyh i NVLA P Pr o j e c t Le a de r Nat ional Bureau of Standards Technology Bldg Room B0 6 Washshyington DC 20234 p hone 301-921-2427

On January 14 1982 a fina l f i nd i ng of need to accredit laboratories that provide electroshymagnetic calibration ser vices was published in the Federal Register (47 FR 2146-2149)

Before NBS can formally establish this LAP the techn ical r e qu i remen ts for accred i t ing laboratories that provide electromagnetic calibration services must be developed Inshyformation needed and issues to be discussed at the workshop include but are not limited to

1 Ne c e s s a r y materials and protocols for asshysessing a laboratorys performance including appropriate documentation

2 Use of a Measurement As s ur a nc e Program (MAP) as a proficiency test mechanism

3 Qualifications of metrology technicians and supervisory personnel

4 Applicability of test methods and recomshymendations for other methods and

5 Sources of assessors for this LAP a nd creshydentials or qualifications which assessors should posse ss

NBS DEVELOPS IMPROVED TECHNIQUE FOR MEASURING PCBs IN OILS

A hybr id analytical technique de veloped by scientists at the NBS could help industrial

chemis ts solve a longstanding measurement problem--how to determine quickly and accushyrately the extent of PCB contamination in lUbricating and cool ing oil samples

PCBs or polychlorinated biphenyl compounds were used extensively as coolants in elecshytrical systems until t he i r manufacture was banned in 1979 by the n v ironmental Protection Agenc y for most applications PCBs physically resemble lubricating oils and h a ve frequenc y been added mistakenly to oil stocks destined for r e cyc l ing

These toxic compounds are n u t r a l organics wi th no chemical character istics a l owing easy separation from an oil mat rix

The NBS technique combines gas c h r o ma tography (GC) with high-performance liqu i d c h romatogshyraphy (HPLC) to achieve detecti o n s e n s i ti vshyities of better than 1 ppm PCB Maj o r intershyfering components in a n oil sampl e r e first selectivel y removed wi th HPLC and t e clean sample is then separated into i ts components us ing a wall-coated open-tubular g as c hromashytographic column

According to NBS researchers Stephen Chesler Reenie Parris and Willie May ot her techshyniques for analyzing PCBs in volving sample preparation by solvent extraction sulfuric acid partitioning or normal-column chromatogshyraphy are time-consuming and can often produce ambiguous results

Most currently used PCB dete r mination techshyniques explains Parr is can not adequately resolve all of the relevant peaks characte r shyistic of these complex mixtures Whereas current techniques could be expected to proshyduce only about 15 identifiable pe a ks the NBS hybrid method reveals some 35-5 0 peaks which can be matched carefull y against chromatograms made with commercial PCB mixtures

The technique was developed for the NBS reshycycled oil research program which needed an improved method for ana l yzi ng PCBs in petrolshyeum oils NBS researchers say the method should be adapted eas ily by industr ial labshyoratories because o f c he ease of sample prepshyaration and the use of con ve ntional commershycially available instruments

The Standard Re f e r e nc e Material (SRM) now beshying prepared a nd cer tified by NBS will consist of separate solutions of two commercial PCB mixtures one each in a transformer oil and motor oil base The standards will be cershytified for concentrations of t he total PCB content and i nformational (uncer tified) values will be give for selected individual PCS isomers

- 29shy

NCSL Newsnote s

The new SRM wh ich is e x pec t ed to be a vailabl e wi t h in a f ew months s ho ul d be usef ul t o the electr i ca l industry the oil recycling i nshydustr y and to e n v i ronme n t a l monitoring orshyganizations for c a l i bra ti ng anal ytical PCB monitori ng pr o cedure s

WEIGHT S AN D MEASURES PROCEEDI NG S

NBS ha s p ub l i s he d the Repo r t o f the 66 th Nashytional Co n f e r e nce o n Weig h ts a nd Meas ur e s 1 9 81 (SP 6 29) Major i s s ues discus s ed included measurement s cie nce e d uca tion nati o nal t y pe a pproval e n f orce men t u n i f o r mi ty inch-pound and me tri c l a beling p r ov i s i o ns new d e s ig n a nd pe r f o r ma nc e requirement s fo r we ighing and measuri ng t e chnology met ric c o nve rs ion of r et a i l g asoli ne di s pe ns ers and othe r matte rs $22 50 p r epa i d f rom the National Te chnical Infor mation Ser vices Spri ngf ie l d Vi r q i n i a 22 16 1 Or der b y PB 82 - 178997 CONTACT Ro ge r Re n sbe r g e r 30 192 1- 3 1 31

CONNECTI ONS I N COLLAPSED WALKrlAYS AT KIINS5 CITY HOTEL FAR FROM ADEQUATE N BS REPORTS

Cr i t ica l con nec t ~ s i n t wo Ka nsas Ci ty Hy a t t Regenc y Hot e l wal kwa y s whi ch c ollap s e d Jul y 1719 81 we r e capa ble of suppo rti ng l e s s than o ne - t h ir d of t he load e x pe cted t o be car r ied b y a con ne c t i o n des i g ned und er the Kansas Ci t y Mi s s o uri building c od e Th a t wa s o ne of t he ma jor conc l us ion s in a r epo r t iss ued t o d ay by the Commer ce Depa r t men t s Nat i onal Bur e au of Sta nda r ds (NBS )

Dr Ed wa r d O Pfr ang who he a de d up a n NBS in ve stigation o f t he nation s worst bu ild ing coll a pse tod ay identified the tw o f act o rs rela t e d to t hose bo x beam- hang e r r od c onne cshyt i ons which were c ritical i n ca us i ng the wal kshywa ys f ailure

F i rs t Pfrang s aid the middot conne ctions as i nishyti all y detail e d and appr o ved for c o ns t r uc t i o n p r o v i ded a cap ac i ty f a r below the capa city that would ha ve be e n re q u i red t o sa t is fy t he Kan s as Ci ty Bu i ld i n g Co de Second a c ha nge in t he s up po r t i ng ha nger r od arra nge me n t e sshysen t ia l ly dou bled t he load to be t ra nsferred by t he c onnections thus f urther a gg rava t i ng a n a lready cr it ica l s itua t i o n

Shortly after t he acciden t wh i ch kill ed 11 3 peopl e and injured 1 8 6 others Kan s a s City Ma yor Ric h a r d L Ber kl y as ke d NBS to in vest ishygate the f ailure The mayo r s reque st was e nd o rse d by member s of t he Mi ssour i cong r esshys i onal delegation NBS a feder al science and engine ering re s earch l aboratory which tradishyti o nally h a s ser ve d i n a t h ird-party r ol e t o re s o l ve t ec hnical c o ntrove r s i a s a g r ee d t o de t e r mi ne the most proba b le c ause o f the c o l shyl apse

The NBS in ve stigation i nc l ude d a r evi ew of v a r ious cons t r uc t ion- r e la ted doc uments onshysi te a nd laboratory s t ruc t ure a nd material s inve stigations- - includ ing testi ng o f se lec t e d par t s of the walkways debr i s a nd NBS r epl i c a s o f i mportant walkwa y c omp o ne nts- -a nd e x te nshys ive e ng i ne e r i ng a na ly s is

The Bure au s f i nd i ngs a r e gi ven in a 349 -page r eport su bmi t te d t o Mayor Ber kl y i n Kans a s Ci t y a nd re v iewe d b y P f ra ng Ch i e f of the NBS Struct ure s Di v is i o n a t a new s con shyference in Gaither sburg Mar yl and

DIRECTOR OF I ONI ZING RAD IATION CALI BRAT ION SERVICES AVAILABLE

I dust ri a I us e r s 0 Lon i a ing r a d i a t i or n s t pe riod icalJ Y r ec a l b r a t e t he i r middot u Vt Y ns rushyments 0 c a mp y ~i h n umero us eder a _ a c and l oca l r e g ul a t i o Fo e 5 ti me a co p rehenSlve dirc is he d by

BS Q dE o r - - i o n o n the - 0 r l c e s f o r c a l i -

En t i t l e d a DishyI r a t i o n Se rv ice s f or

S urve y In s tr uments a nd GCR 80 - 29 6 it was pre p ar ed

-[at i ve e ffort between NBS a nd a s u r e me n t s Commi t t ee of the

Co n f e rence 0 Ra i a t i on Co n t r o l Progr am Di shyr ec 0 s Prev i o us to its p u blic a t i o n the re

ad been no s i ng l e source o f infor mation on whe r e a ppropr i a t e calibr a tions c o ul d be o bshy

a ined

For e ch compa ny that p r o vi des in strument c al shyibra tion s e r v i c e s t he di r ector y i nd icate s the r ~d a t i o n type e ne r gy a nd intens it y r ange s calibra t i o n method a nd e s t imated accuracy S i nc e r adioac ti ve s o ur ces a r e fr e q ue n t l y us ed t o c a l i br a te i ns t r uments i n - ho use t he same i n f o r ma t i o n i s pr o v i ded f o r s our c e man u fac shytu r e r s Ser vi c e s a r e listed by state a nd b y ty o f r adiat i on o f i nterest Eight y-t hr e e c ompa n i e s t h a t p rovid e instr ument ca l i bra t ion s er vi c es reques te d the y be i nc l ude d in t he d i r ec t ory a long wi th 2 7 c ompanie s t h a t s e l l c a l ibra ted r adi oacti ve source s

Appe ndices t o the d ir e ctor y i nc lude use f ul informat i on o n po s sibl e s our c e s o f i n acc ur acy in ca l i bra t ion p r ope r t i es o f v a r i ou s r a d i oshya c t ive source s c ommonly u se d f o r ins trumen t c a l i b ra t i o n a nd a s ummary o f r e lated in forshyma ti on o bta i ned f rom a q ue s t i o n na ir e that was se nt to 280 c ompa n ie s

- 3 0shy

CONTACT H T Heaton II ext 2551

Chris E Kuyatt Director Center for Radiation Research

NEAR FIELD ANTENNA MEASUREMENTS COURSE

This course is intended to introduce the stushydent to the recently developed technique of characterizing antennas without the use of a far-field range The se measurements are pershyformed by moving a small probe across the antenna and then calculating the far-field pattern In spite of the fact that the probe is within a few wavelengths of the antenna the patterns produced are comparable to the best far-field patterns

The course is taught from a practical or ientashytion with emphasis on user applications Mathematical analyses are reduced to a minshyimum and the practical techniques used in the measurements are stressed For those students not currently working with antennas the first two lectures re view the fundamental pr inciples of antennas and their basic meas urements An introduction to phased arrays is also provided since arrays a r e particularly s uited to nearshyfield measurements The r emaining five lecshytures deal with all a s pec t s of the near-field techni que i ncluding design fabrication acshycuracy speci fication and current on-goi ng efforts in the field The principal lecturer Dr Joy is well known as one of the original contr ibutors in this field and has been inshyvol ved in all facets of the design and use of near-field techniques A supplementar y set of lecture notes will be supplied to all at shytendees

DATE

August 10-12 1982 (900 am to 400 pm)

August 13 1982 (900 a m to 1200 noon)

LOCATION

Hilton Har vest House 1345 28th Street

Boulder Colorado 80302 (303) 443-3850

A visit to the National Bureau of Standshyards planarcylindrical spherical nearshyfield f ac i l i t y wi ll be offered following one of the afternoon lect ures

PANEL DISCUSSION

A panel discussion including several well shyknown experts in near-field techniques will be held following an afternoon session Panel members will discuss Present Ca pa b i l i tie s a nd

NCSL Newsnotes

Future Directions for Near-Field Techniques and answer questions from the audience Panel members will include

Dr R C Baird (NBS ) Mr A C Newell (NBS ) Dr C F Stubenrauch (NBS ) Dr A D Yaghijian (NBS) Dr E B Joy (Georgi a I ns t i t ut e of

Technology) Dr J Frank (Technology ~e ~v i ce Corp)

CONTACT Technology Ser vice or po r a i on 301 565-2970

FEDERAL STANDARDS POLICY LEADERSHI P I O PROMOTE TRADE OUTLINED

NBS Director Ernest Ambler has ur ged p~ i va te

se c t o r standards-developing or ga ni za i ons to help promote US trade opportunit ie s by workshying to el iminate unnecessary t e chni c a l barshyriers to international commerce The private sector standards groups were aske 1n br i e f shyi ng by Ambler to ensure the de ve opment of strong national standards that 1 give the Uni ted States a good bargaining po s it i on in the international standards are a pr omo t e the adoption of international standa r ds by US private sector bodies or reconc ile u s and international standards and id e t ify intershynational standards acti vities whe r e a US presence would be beneficial and pr omo t e such representation through designated US national member bodies such as ANSI

Ambler said NBS will do two things t o e limi na t e technical trade barriers NBS wi l l he l p US organizations rapidl y acquire acc ur ate releshyvant information on international foreign national and regional standards a nd certifi shycation activities that could c r e a t e ba r r i e r s to US trade The Bureau a lso wi 1 provide technical assistance to faci li t a t e de ve lopshyment of reciprocal agreements on Ic ce pt a nce of testing and certi fication data The NBS role and programs in this area will be d i sc us s ed in more detail at a pUblic briefing J une 6 CONshyTACT Roger Rensberger 301921-3181

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SOME NEWS FOR USERS OF NBS DIMENSIONAL CALIshyBRATION SERVICES

In accordance with newly imposed calibration guidel ines from NBS management several changes are forthcoming in the classification and processing of certain dimensional calishybrations

The categories calibrations and special tests have been introduced to provide a disshytinction between services on the basis of volume and documentation status Calibrations are those where substantial annual volume exists to justify dedicated test equipment and support staff documentation on test procedshyures is published in the open literature and test fees are fairly standard for a given measurement Special tests are those that do not meet these criteria and will be priced on an individual basis as required by special equipment setups and higher than normal adminshyistrative expense due to low volume Services that have no users in recent years will be eliminated entirel y

The following calibration services will elimshyinated by January 1 1983

Linear Thermal Expansion of Sol ids SP250 Class 13B

Gage Block Thermal Expansion SP250 Class 13D

Gage Block Comparator StL s Tip Radius SP250 Class 13E

The following cal ibration s e rvi c e s wil be reclassified to Special Le ng t h Meas u ement Services SP250 Class 13A by Se e mber 30 1982 and price and turnaround wil l be uo e on an individual basis

Haemacytometers SP 250 Cl as s _ 3N

Precision Circles SP250 Class I J R

We do not wish to reduce our responsivene s s t o critical needs of government or industry b u t must work within the budge t and staff restricshytions currently imposed throughout the govshyernment Furthermore we do not view the above decisions as final and welcome your comments on these or any other calibration related topics

If you have any questions or comments you would 1 ike us to consider please corre spond in writing to

Mr William C Haight Project Manager for Dimensional Calibrashy

tions National Bureau of Standards Building 220 Room BI06 Washington DC 2 0 23 4

FORMATION OF US TECHNICAL ADVISORY GROUP ON ELECTRONIC MEASURING EQUIPMENT

The American National Standards Institute (ANSI) advised NCSL that a US Technical Adshyvisory Group (TAG) 66 Electronic Measuring Equipment is now being formed by the United States National Committee of the IEC (Intershynational Electrotechnical Commission) This group will standardize means of expressing the performance of signal generators waveform analyzers s p e c t r um analyzers logic analyzshyers and chemical analysis equipment Its activities include a group activity on pershysonnel safety of measuring control and assoshyciated equipment It will draft a revision of Publication 359 which embraces limits-ofshyerror concepts recognized by the IEC TC 66 65 and 13

ANSI has establ ished the Instrument Society of America as the administrator of the USA TAG Organizations interested in participating are invited to contact L Henley Assistant Secreshytary USNIEC 1430 Broadway New York NY 10018

Rolf B F Schumacher NCSL-ANSI Liaison Delegate

-32 shy

NCSL Newsnot e s

NB S AND NCSL MEASUREMENT ASSURANC E COMMIT TEE SOLI CI T I NTEREST I N MAP TRA INING SEMI NAR

The Na tiona l Bureau of St andar ds (NB S) and the Measurement As suran ce Commi t t ee of NCSL ha ve r ece ived many reque s t s fo r a tra ining semi na r dealing with the us e of NBS Me a surement As surshyance Pr ogram Service s (lvlAP s ) I n r e sp on s e NBS i s con sidering holding a middotoA P training s emi na r in the Los Ange l es are a dur i ng th e week of November 29 198 2 i f t he r e is suffi shyc ien t int erest The spec i f i c genda for the semi na r is still being co n s i der e d but the gen eral format i s

Pa r t I Two 2- 1 2 da ys i s cus s Lon of the gen eral a s pec t s f t h e )lAP apshypr oa ch i nc l udi n t he ad vant age s and di sa nv an t a ge s cos s and be n shye f i ts t h us of heck s t n a r d s and co nAr o c ha r he s t a ti s t i shycal tool s us e 1

Part I I Two 2- 11 days c t a il ed d iscu s shysion o f h approa ch appl ed t o de o]pounda ho gh br i e f men ion a e ad of o t he r e lec shyYmiddotcal S e n ~ s uch a s res ~s shy

t a nc e capa i 8 1 e e and m cr owa vc powey fOT wh i c ~ P t echn i ques tan be us e u

Pa r t l c i pa n s would be abl e to a tt en d e i t he r Pa r t 1 or Par t I I or bot h pa rt s Fee s for

he ~o par t s and f or the complet e semi na r wi l l be announced at a l ater date

I f you hav e a possibl e int erest in a t tend i ng thi s semi na r or would like to comment on th e content or woul d lik e ad ditional information pl ease contact

Dr Brian C Be l ange r Chief Of fi c e of Me a surement Ser v i ces US Na t i ona l Bureau o f St anda r ds Physic s Buil ding Room B362 Washington DC 20234 (301) 921- 2805

- 33shy

REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

- 34 shy

Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

-36shy

National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

-3 7 shy

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

NCSL Newsnote s

The new SRM wh ich is e x pec t ed to be a vailabl e wi t h in a f ew months s ho ul d be usef ul t o the electr i ca l industry the oil recycling i nshydustr y and to e n v i ronme n t a l monitoring orshyganizations for c a l i bra ti ng anal ytical PCB monitori ng pr o cedure s

WEIGHT S AN D MEASURES PROCEEDI NG S

NBS ha s p ub l i s he d the Repo r t o f the 66 th Nashytional Co n f e r e nce o n Weig h ts a nd Meas ur e s 1 9 81 (SP 6 29) Major i s s ues discus s ed included measurement s cie nce e d uca tion nati o nal t y pe a pproval e n f orce men t u n i f o r mi ty inch-pound and me tri c l a beling p r ov i s i o ns new d e s ig n a nd pe r f o r ma nc e requirement s fo r we ighing and measuri ng t e chnology met ric c o nve rs ion of r et a i l g asoli ne di s pe ns ers and othe r matte rs $22 50 p r epa i d f rom the National Te chnical Infor mation Ser vices Spri ngf ie l d Vi r q i n i a 22 16 1 Or der b y PB 82 - 178997 CONTACT Ro ge r Re n sbe r g e r 30 192 1- 3 1 31

CONNECTI ONS I N COLLAPSED WALKrlAYS AT KIINS5 CITY HOTEL FAR FROM ADEQUATE N BS REPORTS

Cr i t ica l con nec t ~ s i n t wo Ka nsas Ci ty Hy a t t Regenc y Hot e l wal kwa y s whi ch c ollap s e d Jul y 1719 81 we r e capa ble of suppo rti ng l e s s than o ne - t h ir d of t he load e x pe cted t o be car r ied b y a con ne c t i o n des i g ned und er the Kansas Ci t y Mi s s o uri building c od e Th a t wa s o ne of t he ma jor conc l us ion s in a r epo r t iss ued t o d ay by the Commer ce Depa r t men t s Nat i onal Bur e au of Sta nda r ds (NBS )

Dr Ed wa r d O Pfr ang who he a de d up a n NBS in ve stigation o f t he nation s worst bu ild ing coll a pse tod ay identified the tw o f act o rs rela t e d to t hose bo x beam- hang e r r od c onne cshyt i ons which were c ritical i n ca us i ng the wal kshywa ys f ailure

F i rs t Pfrang s aid the middot conne ctions as i nishyti all y detail e d and appr o ved for c o ns t r uc t i o n p r o v i ded a cap ac i ty f a r below the capa city that would ha ve be e n re q u i red t o sa t is fy t he Kan s as Ci ty Bu i ld i n g Co de Second a c ha nge in t he s up po r t i ng ha nger r od arra nge me n t e sshysen t ia l ly dou bled t he load to be t ra nsferred by t he c onnections thus f urther a gg rava t i ng a n a lready cr it ica l s itua t i o n

Shortly after t he acciden t wh i ch kill ed 11 3 peopl e and injured 1 8 6 others Kan s a s City Ma yor Ric h a r d L Ber kl y as ke d NBS to in vest ishygate the f ailure The mayo r s reque st was e nd o rse d by member s of t he Mi ssour i cong r esshys i onal delegation NBS a feder al science and engine ering re s earch l aboratory which tradishyti o nally h a s ser ve d i n a t h ird-party r ol e t o re s o l ve t ec hnical c o ntrove r s i a s a g r ee d t o de t e r mi ne the most proba b le c ause o f the c o l shyl apse

The NBS in ve stigation i nc l ude d a r evi ew of v a r ious cons t r uc t ion- r e la ted doc uments onshysi te a nd laboratory s t ruc t ure a nd material s inve stigations- - includ ing testi ng o f se lec t e d par t s of the walkways debr i s a nd NBS r epl i c a s o f i mportant walkwa y c omp o ne nts- -a nd e x te nshys ive e ng i ne e r i ng a na ly s is

The Bure au s f i nd i ngs a r e gi ven in a 349 -page r eport su bmi t te d t o Mayor Ber kl y i n Kans a s Ci t y a nd re v iewe d b y P f ra ng Ch i e f of the NBS Struct ure s Di v is i o n a t a new s con shyference in Gaither sburg Mar yl and

DIRECTOR OF I ONI ZING RAD IATION CALI BRAT ION SERVICES AVAILABLE

I dust ri a I us e r s 0 Lon i a ing r a d i a t i or n s t pe riod icalJ Y r ec a l b r a t e t he i r middot u Vt Y ns rushyments 0 c a mp y ~i h n umero us eder a _ a c and l oca l r e g ul a t i o Fo e 5 ti me a co p rehenSlve dirc is he d by

BS Q dE o r - - i o n o n the - 0 r l c e s f o r c a l i -

En t i t l e d a DishyI r a t i o n Se rv ice s f or

S urve y In s tr uments a nd GCR 80 - 29 6 it was pre p ar ed

-[at i ve e ffort between NBS a nd a s u r e me n t s Commi t t ee of the

Co n f e rence 0 Ra i a t i on Co n t r o l Progr am Di shyr ec 0 s Prev i o us to its p u blic a t i o n the re

ad been no s i ng l e source o f infor mation on whe r e a ppropr i a t e calibr a tions c o ul d be o bshy

a ined

For e ch compa ny that p r o vi des in strument c al shyibra tion s e r v i c e s t he di r ector y i nd icate s the r ~d a t i o n type e ne r gy a nd intens it y r ange s calibra t i o n method a nd e s t imated accuracy S i nc e r adioac ti ve s o ur ces a r e fr e q ue n t l y us ed t o c a l i br a te i ns t r uments i n - ho use t he same i n f o r ma t i o n i s pr o v i ded f o r s our c e man u fac shytu r e r s Ser vi c e s a r e listed by state a nd b y ty o f r adiat i on o f i nterest Eight y-t hr e e c ompa n i e s t h a t p rovid e instr ument ca l i bra t ion s er vi c es reques te d the y be i nc l ude d in t he d i r ec t ory a long wi th 2 7 c ompanie s t h a t s e l l c a l ibra ted r adi oacti ve source s

Appe ndices t o the d ir e ctor y i nc lude use f ul informat i on o n po s sibl e s our c e s o f i n acc ur acy in ca l i bra t ion p r ope r t i es o f v a r i ou s r a d i oshya c t ive source s c ommonly u se d f o r ins trumen t c a l i b ra t i o n a nd a s ummary o f r e lated in forshyma ti on o bta i ned f rom a q ue s t i o n na ir e that was se nt to 280 c ompa n ie s

- 3 0shy

CONTACT H T Heaton II ext 2551

Chris E Kuyatt Director Center for Radiation Research

NEAR FIELD ANTENNA MEASUREMENTS COURSE

This course is intended to introduce the stushydent to the recently developed technique of characterizing antennas without the use of a far-field range The se measurements are pershyformed by moving a small probe across the antenna and then calculating the far-field pattern In spite of the fact that the probe is within a few wavelengths of the antenna the patterns produced are comparable to the best far-field patterns

The course is taught from a practical or ientashytion with emphasis on user applications Mathematical analyses are reduced to a minshyimum and the practical techniques used in the measurements are stressed For those students not currently working with antennas the first two lectures re view the fundamental pr inciples of antennas and their basic meas urements An introduction to phased arrays is also provided since arrays a r e particularly s uited to nearshyfield measurements The r emaining five lecshytures deal with all a s pec t s of the near-field techni que i ncluding design fabrication acshycuracy speci fication and current on-goi ng efforts in the field The principal lecturer Dr Joy is well known as one of the original contr ibutors in this field and has been inshyvol ved in all facets of the design and use of near-field techniques A supplementar y set of lecture notes will be supplied to all at shytendees

DATE

August 10-12 1982 (900 am to 400 pm)

August 13 1982 (900 a m to 1200 noon)

LOCATION

Hilton Har vest House 1345 28th Street

Boulder Colorado 80302 (303) 443-3850

A visit to the National Bureau of Standshyards planarcylindrical spherical nearshyfield f ac i l i t y wi ll be offered following one of the afternoon lect ures

PANEL DISCUSSION

A panel discussion including several well shyknown experts in near-field techniques will be held following an afternoon session Panel members will discuss Present Ca pa b i l i tie s a nd

NCSL Newsnotes

Future Directions for Near-Field Techniques and answer questions from the audience Panel members will include

Dr R C Baird (NBS ) Mr A C Newell (NBS ) Dr C F Stubenrauch (NBS ) Dr A D Yaghijian (NBS) Dr E B Joy (Georgi a I ns t i t ut e of

Technology) Dr J Frank (Technology ~e ~v i ce Corp)

CONTACT Technology Ser vice or po r a i on 301 565-2970

FEDERAL STANDARDS POLICY LEADERSHI P I O PROMOTE TRADE OUTLINED

NBS Director Ernest Ambler has ur ged p~ i va te

se c t o r standards-developing or ga ni za i ons to help promote US trade opportunit ie s by workshying to el iminate unnecessary t e chni c a l barshyriers to international commerce The private sector standards groups were aske 1n br i e f shyi ng by Ambler to ensure the de ve opment of strong national standards that 1 give the Uni ted States a good bargaining po s it i on in the international standards are a pr omo t e the adoption of international standa r ds by US private sector bodies or reconc ile u s and international standards and id e t ify intershynational standards acti vities whe r e a US presence would be beneficial and pr omo t e such representation through designated US national member bodies such as ANSI

Ambler said NBS will do two things t o e limi na t e technical trade barriers NBS wi l l he l p US organizations rapidl y acquire acc ur ate releshyvant information on international foreign national and regional standards a nd certifi shycation activities that could c r e a t e ba r r i e r s to US trade The Bureau a lso wi 1 provide technical assistance to faci li t a t e de ve lopshyment of reciprocal agreements on Ic ce pt a nce of testing and certi fication data The NBS role and programs in this area will be d i sc us s ed in more detail at a pUblic briefing J une 6 CONshyTACT Roger Rensberger 301921-3181

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SOME NEWS FOR USERS OF NBS DIMENSIONAL CALIshyBRATION SERVICES

In accordance with newly imposed calibration guidel ines from NBS management several changes are forthcoming in the classification and processing of certain dimensional calishybrations

The categories calibrations and special tests have been introduced to provide a disshytinction between services on the basis of volume and documentation status Calibrations are those where substantial annual volume exists to justify dedicated test equipment and support staff documentation on test procedshyures is published in the open literature and test fees are fairly standard for a given measurement Special tests are those that do not meet these criteria and will be priced on an individual basis as required by special equipment setups and higher than normal adminshyistrative expense due to low volume Services that have no users in recent years will be eliminated entirel y

The following calibration services will elimshyinated by January 1 1983

Linear Thermal Expansion of Sol ids SP250 Class 13B

Gage Block Thermal Expansion SP250 Class 13D

Gage Block Comparator StL s Tip Radius SP250 Class 13E

The following cal ibration s e rvi c e s wil be reclassified to Special Le ng t h Meas u ement Services SP250 Class 13A by Se e mber 30 1982 and price and turnaround wil l be uo e on an individual basis

Haemacytometers SP 250 Cl as s _ 3N

Precision Circles SP250 Class I J R

We do not wish to reduce our responsivene s s t o critical needs of government or industry b u t must work within the budge t and staff restricshytions currently imposed throughout the govshyernment Furthermore we do not view the above decisions as final and welcome your comments on these or any other calibration related topics

If you have any questions or comments you would 1 ike us to consider please corre spond in writing to

Mr William C Haight Project Manager for Dimensional Calibrashy

tions National Bureau of Standards Building 220 Room BI06 Washington DC 2 0 23 4

FORMATION OF US TECHNICAL ADVISORY GROUP ON ELECTRONIC MEASURING EQUIPMENT

The American National Standards Institute (ANSI) advised NCSL that a US Technical Adshyvisory Group (TAG) 66 Electronic Measuring Equipment is now being formed by the United States National Committee of the IEC (Intershynational Electrotechnical Commission) This group will standardize means of expressing the performance of signal generators waveform analyzers s p e c t r um analyzers logic analyzshyers and chemical analysis equipment Its activities include a group activity on pershysonnel safety of measuring control and assoshyciated equipment It will draft a revision of Publication 359 which embraces limits-ofshyerror concepts recognized by the IEC TC 66 65 and 13

ANSI has establ ished the Instrument Society of America as the administrator of the USA TAG Organizations interested in participating are invited to contact L Henley Assistant Secreshytary USNIEC 1430 Broadway New York NY 10018

Rolf B F Schumacher NCSL-ANSI Liaison Delegate

-32 shy

NCSL Newsnot e s

NB S AND NCSL MEASUREMENT ASSURANC E COMMIT TEE SOLI CI T I NTEREST I N MAP TRA INING SEMI NAR

The Na tiona l Bureau of St andar ds (NB S) and the Measurement As suran ce Commi t t ee of NCSL ha ve r ece ived many reque s t s fo r a tra ining semi na r dealing with the us e of NBS Me a surement As surshyance Pr ogram Service s (lvlAP s ) I n r e sp on s e NBS i s con sidering holding a middotoA P training s emi na r in the Los Ange l es are a dur i ng th e week of November 29 198 2 i f t he r e is suffi shyc ien t int erest The spec i f i c genda for the semi na r is still being co n s i der e d but the gen eral format i s

Pa r t I Two 2- 1 2 da ys i s cus s Lon of the gen eral a s pec t s f t h e )lAP apshypr oa ch i nc l udi n t he ad vant age s and di sa nv an t a ge s cos s and be n shye f i ts t h us of heck s t n a r d s and co nAr o c ha r he s t a ti s t i shycal tool s us e 1

Part I I Two 2- 11 days c t a il ed d iscu s shysion o f h approa ch appl ed t o de o]pounda ho gh br i e f men ion a e ad of o t he r e lec shyYmiddotcal S e n ~ s uch a s res ~s shy

t a nc e capa i 8 1 e e and m cr owa vc powey fOT wh i c ~ P t echn i ques tan be us e u

Pa r t l c i pa n s would be abl e to a tt en d e i t he r Pa r t 1 or Par t I I or bot h pa rt s Fee s for

he ~o par t s and f or the complet e semi na r wi l l be announced at a l ater date

I f you hav e a possibl e int erest in a t tend i ng thi s semi na r or would like to comment on th e content or woul d lik e ad ditional information pl ease contact

Dr Brian C Be l ange r Chief Of fi c e of Me a surement Ser v i ces US Na t i ona l Bureau o f St anda r ds Physic s Buil ding Room B362 Washington DC 20234 (301) 921- 2805

- 33shy

REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

- 34 shy

Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

-36shy

National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

-3 7 shy

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

CONTACT H T Heaton II ext 2551

Chris E Kuyatt Director Center for Radiation Research

NEAR FIELD ANTENNA MEASUREMENTS COURSE

This course is intended to introduce the stushydent to the recently developed technique of characterizing antennas without the use of a far-field range The se measurements are pershyformed by moving a small probe across the antenna and then calculating the far-field pattern In spite of the fact that the probe is within a few wavelengths of the antenna the patterns produced are comparable to the best far-field patterns

The course is taught from a practical or ientashytion with emphasis on user applications Mathematical analyses are reduced to a minshyimum and the practical techniques used in the measurements are stressed For those students not currently working with antennas the first two lectures re view the fundamental pr inciples of antennas and their basic meas urements An introduction to phased arrays is also provided since arrays a r e particularly s uited to nearshyfield measurements The r emaining five lecshytures deal with all a s pec t s of the near-field techni que i ncluding design fabrication acshycuracy speci fication and current on-goi ng efforts in the field The principal lecturer Dr Joy is well known as one of the original contr ibutors in this field and has been inshyvol ved in all facets of the design and use of near-field techniques A supplementar y set of lecture notes will be supplied to all at shytendees

DATE

August 10-12 1982 (900 am to 400 pm)

August 13 1982 (900 a m to 1200 noon)

LOCATION

Hilton Har vest House 1345 28th Street

Boulder Colorado 80302 (303) 443-3850

A visit to the National Bureau of Standshyards planarcylindrical spherical nearshyfield f ac i l i t y wi ll be offered following one of the afternoon lect ures

PANEL DISCUSSION

A panel discussion including several well shyknown experts in near-field techniques will be held following an afternoon session Panel members will discuss Present Ca pa b i l i tie s a nd

NCSL Newsnotes

Future Directions for Near-Field Techniques and answer questions from the audience Panel members will include

Dr R C Baird (NBS ) Mr A C Newell (NBS ) Dr C F Stubenrauch (NBS ) Dr A D Yaghijian (NBS) Dr E B Joy (Georgi a I ns t i t ut e of

Technology) Dr J Frank (Technology ~e ~v i ce Corp)

CONTACT Technology Ser vice or po r a i on 301 565-2970

FEDERAL STANDARDS POLICY LEADERSHI P I O PROMOTE TRADE OUTLINED

NBS Director Ernest Ambler has ur ged p~ i va te

se c t o r standards-developing or ga ni za i ons to help promote US trade opportunit ie s by workshying to el iminate unnecessary t e chni c a l barshyriers to international commerce The private sector standards groups were aske 1n br i e f shyi ng by Ambler to ensure the de ve opment of strong national standards that 1 give the Uni ted States a good bargaining po s it i on in the international standards are a pr omo t e the adoption of international standa r ds by US private sector bodies or reconc ile u s and international standards and id e t ify intershynational standards acti vities whe r e a US presence would be beneficial and pr omo t e such representation through designated US national member bodies such as ANSI

Ambler said NBS will do two things t o e limi na t e technical trade barriers NBS wi l l he l p US organizations rapidl y acquire acc ur ate releshyvant information on international foreign national and regional standards a nd certifi shycation activities that could c r e a t e ba r r i e r s to US trade The Bureau a lso wi 1 provide technical assistance to faci li t a t e de ve lopshyment of reciprocal agreements on Ic ce pt a nce of testing and certi fication data The NBS role and programs in this area will be d i sc us s ed in more detail at a pUblic briefing J une 6 CONshyTACT Roger Rensberger 301921-3181

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SOME NEWS FOR USERS OF NBS DIMENSIONAL CALIshyBRATION SERVICES

In accordance with newly imposed calibration guidel ines from NBS management several changes are forthcoming in the classification and processing of certain dimensional calishybrations

The categories calibrations and special tests have been introduced to provide a disshytinction between services on the basis of volume and documentation status Calibrations are those where substantial annual volume exists to justify dedicated test equipment and support staff documentation on test procedshyures is published in the open literature and test fees are fairly standard for a given measurement Special tests are those that do not meet these criteria and will be priced on an individual basis as required by special equipment setups and higher than normal adminshyistrative expense due to low volume Services that have no users in recent years will be eliminated entirel y

The following calibration services will elimshyinated by January 1 1983

Linear Thermal Expansion of Sol ids SP250 Class 13B

Gage Block Thermal Expansion SP250 Class 13D

Gage Block Comparator StL s Tip Radius SP250 Class 13E

The following cal ibration s e rvi c e s wil be reclassified to Special Le ng t h Meas u ement Services SP250 Class 13A by Se e mber 30 1982 and price and turnaround wil l be uo e on an individual basis

Haemacytometers SP 250 Cl as s _ 3N

Precision Circles SP250 Class I J R

We do not wish to reduce our responsivene s s t o critical needs of government or industry b u t must work within the budge t and staff restricshytions currently imposed throughout the govshyernment Furthermore we do not view the above decisions as final and welcome your comments on these or any other calibration related topics

If you have any questions or comments you would 1 ike us to consider please corre spond in writing to

Mr William C Haight Project Manager for Dimensional Calibrashy

tions National Bureau of Standards Building 220 Room BI06 Washington DC 2 0 23 4

FORMATION OF US TECHNICAL ADVISORY GROUP ON ELECTRONIC MEASURING EQUIPMENT

The American National Standards Institute (ANSI) advised NCSL that a US Technical Adshyvisory Group (TAG) 66 Electronic Measuring Equipment is now being formed by the United States National Committee of the IEC (Intershynational Electrotechnical Commission) This group will standardize means of expressing the performance of signal generators waveform analyzers s p e c t r um analyzers logic analyzshyers and chemical analysis equipment Its activities include a group activity on pershysonnel safety of measuring control and assoshyciated equipment It will draft a revision of Publication 359 which embraces limits-ofshyerror concepts recognized by the IEC TC 66 65 and 13

ANSI has establ ished the Instrument Society of America as the administrator of the USA TAG Organizations interested in participating are invited to contact L Henley Assistant Secreshytary USNIEC 1430 Broadway New York NY 10018

Rolf B F Schumacher NCSL-ANSI Liaison Delegate

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NCSL Newsnot e s

NB S AND NCSL MEASUREMENT ASSURANC E COMMIT TEE SOLI CI T I NTEREST I N MAP TRA INING SEMI NAR

The Na tiona l Bureau of St andar ds (NB S) and the Measurement As suran ce Commi t t ee of NCSL ha ve r ece ived many reque s t s fo r a tra ining semi na r dealing with the us e of NBS Me a surement As surshyance Pr ogram Service s (lvlAP s ) I n r e sp on s e NBS i s con sidering holding a middotoA P training s emi na r in the Los Ange l es are a dur i ng th e week of November 29 198 2 i f t he r e is suffi shyc ien t int erest The spec i f i c genda for the semi na r is still being co n s i der e d but the gen eral format i s

Pa r t I Two 2- 1 2 da ys i s cus s Lon of the gen eral a s pec t s f t h e )lAP apshypr oa ch i nc l udi n t he ad vant age s and di sa nv an t a ge s cos s and be n shye f i ts t h us of heck s t n a r d s and co nAr o c ha r he s t a ti s t i shycal tool s us e 1

Part I I Two 2- 11 days c t a il ed d iscu s shysion o f h approa ch appl ed t o de o]pounda ho gh br i e f men ion a e ad of o t he r e lec shyYmiddotcal S e n ~ s uch a s res ~s shy

t a nc e capa i 8 1 e e and m cr owa vc powey fOT wh i c ~ P t echn i ques tan be us e u

Pa r t l c i pa n s would be abl e to a tt en d e i t he r Pa r t 1 or Par t I I or bot h pa rt s Fee s for

he ~o par t s and f or the complet e semi na r wi l l be announced at a l ater date

I f you hav e a possibl e int erest in a t tend i ng thi s semi na r or would like to comment on th e content or woul d lik e ad ditional information pl ease contact

Dr Brian C Be l ange r Chief Of fi c e of Me a surement Ser v i ces US Na t i ona l Bureau o f St anda r ds Physic s Buil ding Room B362 Washington DC 20234 (301) 921- 2805

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REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

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Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

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National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

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TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

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Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

SOME NEWS FOR USERS OF NBS DIMENSIONAL CALIshyBRATION SERVICES

In accordance with newly imposed calibration guidel ines from NBS management several changes are forthcoming in the classification and processing of certain dimensional calishybrations

The categories calibrations and special tests have been introduced to provide a disshytinction between services on the basis of volume and documentation status Calibrations are those where substantial annual volume exists to justify dedicated test equipment and support staff documentation on test procedshyures is published in the open literature and test fees are fairly standard for a given measurement Special tests are those that do not meet these criteria and will be priced on an individual basis as required by special equipment setups and higher than normal adminshyistrative expense due to low volume Services that have no users in recent years will be eliminated entirel y

The following calibration services will elimshyinated by January 1 1983

Linear Thermal Expansion of Sol ids SP250 Class 13B

Gage Block Thermal Expansion SP250 Class 13D

Gage Block Comparator StL s Tip Radius SP250 Class 13E

The following cal ibration s e rvi c e s wil be reclassified to Special Le ng t h Meas u ement Services SP250 Class 13A by Se e mber 30 1982 and price and turnaround wil l be uo e on an individual basis

Haemacytometers SP 250 Cl as s _ 3N

Precision Circles SP250 Class I J R

We do not wish to reduce our responsivene s s t o critical needs of government or industry b u t must work within the budge t and staff restricshytions currently imposed throughout the govshyernment Furthermore we do not view the above decisions as final and welcome your comments on these or any other calibration related topics

If you have any questions or comments you would 1 ike us to consider please corre spond in writing to

Mr William C Haight Project Manager for Dimensional Calibrashy

tions National Bureau of Standards Building 220 Room BI06 Washington DC 2 0 23 4

FORMATION OF US TECHNICAL ADVISORY GROUP ON ELECTRONIC MEASURING EQUIPMENT

The American National Standards Institute (ANSI) advised NCSL that a US Technical Adshyvisory Group (TAG) 66 Electronic Measuring Equipment is now being formed by the United States National Committee of the IEC (Intershynational Electrotechnical Commission) This group will standardize means of expressing the performance of signal generators waveform analyzers s p e c t r um analyzers logic analyzshyers and chemical analysis equipment Its activities include a group activity on pershysonnel safety of measuring control and assoshyciated equipment It will draft a revision of Publication 359 which embraces limits-ofshyerror concepts recognized by the IEC TC 66 65 and 13

ANSI has establ ished the Instrument Society of America as the administrator of the USA TAG Organizations interested in participating are invited to contact L Henley Assistant Secreshytary USNIEC 1430 Broadway New York NY 10018

Rolf B F Schumacher NCSL-ANSI Liaison Delegate

-32 shy

NCSL Newsnot e s

NB S AND NCSL MEASUREMENT ASSURANC E COMMIT TEE SOLI CI T I NTEREST I N MAP TRA INING SEMI NAR

The Na tiona l Bureau of St andar ds (NB S) and the Measurement As suran ce Commi t t ee of NCSL ha ve r ece ived many reque s t s fo r a tra ining semi na r dealing with the us e of NBS Me a surement As surshyance Pr ogram Service s (lvlAP s ) I n r e sp on s e NBS i s con sidering holding a middotoA P training s emi na r in the Los Ange l es are a dur i ng th e week of November 29 198 2 i f t he r e is suffi shyc ien t int erest The spec i f i c genda for the semi na r is still being co n s i der e d but the gen eral format i s

Pa r t I Two 2- 1 2 da ys i s cus s Lon of the gen eral a s pec t s f t h e )lAP apshypr oa ch i nc l udi n t he ad vant age s and di sa nv an t a ge s cos s and be n shye f i ts t h us of heck s t n a r d s and co nAr o c ha r he s t a ti s t i shycal tool s us e 1

Part I I Two 2- 11 days c t a il ed d iscu s shysion o f h approa ch appl ed t o de o]pounda ho gh br i e f men ion a e ad of o t he r e lec shyYmiddotcal S e n ~ s uch a s res ~s shy

t a nc e capa i 8 1 e e and m cr owa vc powey fOT wh i c ~ P t echn i ques tan be us e u

Pa r t l c i pa n s would be abl e to a tt en d e i t he r Pa r t 1 or Par t I I or bot h pa rt s Fee s for

he ~o par t s and f or the complet e semi na r wi l l be announced at a l ater date

I f you hav e a possibl e int erest in a t tend i ng thi s semi na r or would like to comment on th e content or woul d lik e ad ditional information pl ease contact

Dr Brian C Be l ange r Chief Of fi c e of Me a surement Ser v i ces US Na t i ona l Bureau o f St anda r ds Physic s Buil ding Room B362 Washington DC 20234 (301) 921- 2805

- 33shy

REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

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Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

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National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

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TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

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Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

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NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

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NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

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BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

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COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

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REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

NCSL Newsnot e s

NB S AND NCSL MEASUREMENT ASSURANC E COMMIT TEE SOLI CI T I NTEREST I N MAP TRA INING SEMI NAR

The Na tiona l Bureau of St andar ds (NB S) and the Measurement As suran ce Commi t t ee of NCSL ha ve r ece ived many reque s t s fo r a tra ining semi na r dealing with the us e of NBS Me a surement As surshyance Pr ogram Service s (lvlAP s ) I n r e sp on s e NBS i s con sidering holding a middotoA P training s emi na r in the Los Ange l es are a dur i ng th e week of November 29 198 2 i f t he r e is suffi shyc ien t int erest The spec i f i c genda for the semi na r is still being co n s i der e d but the gen eral format i s

Pa r t I Two 2- 1 2 da ys i s cus s Lon of the gen eral a s pec t s f t h e )lAP apshypr oa ch i nc l udi n t he ad vant age s and di sa nv an t a ge s cos s and be n shye f i ts t h us of heck s t n a r d s and co nAr o c ha r he s t a ti s t i shycal tool s us e 1

Part I I Two 2- 11 days c t a il ed d iscu s shysion o f h approa ch appl ed t o de o]pounda ho gh br i e f men ion a e ad of o t he r e lec shyYmiddotcal S e n ~ s uch a s res ~s shy

t a nc e capa i 8 1 e e and m cr owa vc powey fOT wh i c ~ P t echn i ques tan be us e u

Pa r t l c i pa n s would be abl e to a tt en d e i t he r Pa r t 1 or Par t I I or bot h pa rt s Fee s for

he ~o par t s and f or the complet e semi na r wi l l be announced at a l ater date

I f you hav e a possibl e int erest in a t tend i ng thi s semi na r or would like to comment on th e content or woul d lik e ad ditional information pl ease contact

Dr Brian C Be l ange r Chief Of fi c e of Me a surement Ser v i ces US Na t i ona l Bureau o f St anda r ds Physic s Buil ding Room B362 Washington DC 20234 (301) 921- 2805

- 33shy

REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

- 34 shy

Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

-35 shy

[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

-36shy

National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

-3 7 shy

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

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BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

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COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

REPORTS FRO

Apr i l 21 1982 Ray t he o n Company Wa yl a nd MA Har r y Ha yme s Region 1 Coord ina tor

Ha rry Hayme s wel come d eve ryone o n be ha l f o f o ur ho sts Ha zen Saltmarsh and Dave Clo ugh of Ra y theon Company (Wayl and ) a nd ca l led the me eting t o o rde r Cer t i f i ca te s o f Ap pre c i a shyti on were awa r ded t o Norm Carbonn ea u of Microshywave Ass oc ia te s Herb Barclay of GTE Sy l va n ia a nd Larr y Po t a r o o f Teradyne Inc for ha ving hos ted NCSL me etings during 1981

Ed r e mi nded us o f the Ad Hoc Commi t tee s conshytin uing ac t iv i ty r egarding the NBS Organ i c Act o f 191 0 and the intere st o f the Cong res s iona l Subcommi ttee re vie wi ng the Ac t in our NCSL org anization inpu ts

Follo wing the br i e f ques tion a nd ans wer se s shysion Har ry introduce d Pi e t e r Wiederhold Pres ide nt of Ge ne r a l Eas t e r n I nst ruments Co r shypo r at ion Pie te r c o nd ucted a ve r y i n f o rma t ive l e cture a nd s lide pre s e n t t i o n o n t he histo ry o f a nd method s most commo n l y sed t o mea su re humidity The ad van tage s d i s ad van ta es and limitations o f seve ra l h umt i t y l e a s u re me n t echnique s were ca re f ul l y i n ed o u t oIh cl led up to a det ailed ana lys i s o f he Cn i e d Mirror Se n s o r By using a Ch i l le d ir 0 Se nso r a nd very precise pl a t num resis to Gene r a l Eas te rn is c a pa ble o f obtai n i n ac c ur ac y of appr o x i mate 1 y O laC t r an s l a t-in within 0 5 re lat ive humid ity at l e ve l s up 40

Ed Nemeroff of Gui l d l ine was the ne xt spe a ke r He di scussed the pr obl ems a nd conc e r ns of c a l i bra t i ng 6-1 2 a nd 7- 12 digit DVMs Ed s prese nta t ion ce nte re d on his own s tudy of t he Meas ur eme nt Py r ami d s i n e stabl ishing a 10 ppm t race ab il i ty at 10 Vd c for m the manushyf acturing are a to the standa rd vo l t a t NBS Ed a l s o p r e s e n t e d d at a o btained thr o ugh a n intershynational c ompa r ison o f the s t a nda r d vol t The ma ny s ource s o f e r r o r are cum ulati ve a nd Ed c a ut ions us a l l not t o f o r get the h um an e lement as one of thos e so urces of e rr o r

Ed c onc l ude d wi t h a q ue s t i o n a nd a ns we r ses shysi on whi c h b r o ug ht up the subject o f Re gi on 2 s ce l l MAP Ed c ommente d that the prog ram ha s be e n a tre mendo us asset a nd that a g rea t deal has been l e arned by t hose who h ave parshyti ci pated

Our f i na l spe ake r wa s Har ry himself who ni cel y ill ustr ate d hi s s uo j e c t Probl ems wi t h MIL shySTD-4 5662 Cer t i f ica t ion Req uireme nts n Al l o f us r e ly o n ou t s i de c al ibra t i on ag e nc i e s f rom

E REGION time t o time and Har r y demonstr ated by e xample that the typi c al Cer t i f i c a tes of Cali br ation lacks a o r e a t de al of information and do e s not c ompl y to the MI L-STD Harr y hope s that we have be en enlig htene d by hi s presentation and ask s for HELP from all member o rga n iz a t i o ns I f we sho ut loud e no ug h perhaps we c an ma ke ou rse lves heard

An ope n d isc uss i o n follo we d and the topi c wa s t he Vendor Qua li ty Commi t t ee chai red by Larry Po ta ro o f Teradyne I nc Larr y indi cated the pr ogre ss was be i ng made a nd reque ste d that more NCSL member o rg a n iza t i o ns j oin the c omshymi ttee thereby repre senting a l arger TampME c o n shysume r doll ar fi gur e

Harr y closed the me e ting by thanking o ur ho sts Hazen a nd Dave Thank s f o r the lunch t oo We tha nk yo u Pie te r Wi ederhol d a nd Ed Nemero ff for yo u r p re se nta t ions They wer e mos t enli ghteni ng

The a bov e mi n ute s were pre pared by Bill Robi nson of Ray t he o n Company Po r tsmo ut h Rhode I sland I would li ke to t a ke this o pport uni t y to t ha n k h i m f or doing such a g r e a t job I t i s r e ally a pp r e c i ate d

ATr ENDpoundES

r II Gro p

~~iA middot~ ~~ _ Re s o ur ce s s t r ume n t Ser vi ce

o n Compa ny eon Company

c o wa ve Associate s An l og Device s Po r t s mo ut h Naval Sh i pya r d

E Cont i ne n t a l Re s o urces B Fo Ra y t he o n Compa ny -r

B Gr Ter ad yne GUI Te ks e rve Inc

C Gus afson Portsmo ut h Navan Sh i pya r d J F Harsh Gen Rad C J s o n Northro p Co r p P Karas Joh n Fl uke Co mpany J j l o y Ge n Rad T Ma Jews ki Avc o Sy s te ms Di vision i~ Mc Phe e Cha r le s Dra per Lab E NEme ro f f Gui l d line Instr uments

or r i s Ray t heon Compa ny P tro ws ki Sa nde r s Assoc i a tes

L Po t a r o Terad yne Inc D Quimby rte k Cor po ra tio n J Ricc ite l li Foxboro Compa ny B Ro b i nson Rayt heon Compa ny R Rode r ic k The Fo xb o ro Compa ny A Roy Rayt he o n Compa ny H Saltma r s h Rayt he o n Company R Smith Ray t heon Compa ny T Spa r ks Br ue l and Kjae r D Ta ttrie Joh n Fl uke Company E Visco Di g it a l Equipment Cor p P Vogel Gui ld l i ne Instrument M Yaffi Ray t he o n Company E Haymes Sa nde rs Assoc i ates

- 34 shy

Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

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National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

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TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

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Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

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NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

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NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

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BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

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COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

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COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

Activity Report Bill Simmons Region 6 Coordina tor

JOINT MEETING - PRECISION l-IEASUREHENT ASSOshyCIATIONCENTRAL COLORADO SECTIO amp NCSL REGION 6

The next Region 6 mee ti ng il l be a din ner meeting with the PMA CCS o n une 1 198 2 at the University Memor i a l ceo e r Uni ve r s i t y of Colorado at Boulder The topi fo r disshycussion will be An O ve~vie~ of SS e as ur e shyment Assurance Pr og r s t P5 ) ~C5 L Reg iona l MAPs Report on Reg on 6 5 and Our fea t ur e speaker wil l be Aaron d s C t e r o f Opshytical Electro i e ~ ~olog i _ Lhe Nat i ona l Bureau of Stand a d s Bou e Labor a t o r i e s He will di s cuss Laser _ 0 _ _ nd Ene r Jy MA Ps

This j o i n SL e t i no wi Ll be t he even shying be f o r e t Op t ca l Rad i a t i on Me a s urement s St a nd a rd s a nd In s t r ume nt a t i on Tutorial Semshyi n spons red y t he PMACCS The seminar will also be he l d a t t he University of Co l o r ado i n Boul de r on June 2-4 1982

Reg i on 6 MAPs

Two Regional Measurement Assurance Programs are beginning to gather interest in Region 6 If a nyone i s interested in participating in either a Resi stance MAP andor Gage Block MA P c ont ac t the following task leaders in Reshygion 6 Ronnie Eubanks o f Oti s Engineering in Dallas (21 4323-3579) for gage block MAP o r Paul Ba ile y of Metrolog y Speciali sts Inc in Dall as (214 630-8320 ) f or resistance MAPs

May 4 198 2 Rockwell Operations Hanford WA David Goodhead Region 9 Coordinator

The meeti ng he l d at Ri ch l a nd Washington was c a l l e d t o order by David Goodhead Region 9 Coo r d i na to r David introduced Dennis McCain o f Rockwell Hanford Operations as the host for the mee ti ng

Ed Nemeroff Director gave a report highshylighting the January Board o f Directors Meetshying Next two papers were presented by the following people

Regional Reports

Ed Nemeroff o f Guildine Instruments Inc BUilding the Measurement Pyramid

ER Hamm of Rockwel l International Micro Processors Used in Control a nd Reshycall

Mr Roll ie Ausere o f Westinghouse Hanford gave a presentation showing the HEDL Standards Labs interaction with contractors at the Hanshyford Project

Mr Richard Hatten and Mr Gale Cul bertson o f J M Perry Institute conducted a di s c us s i on on a proposed metr ology curri c ul um to be ofshyfered at J M Perry Institute in Yakima Washington

Next Mr Warren Co l l i e r of Tektronix I nc lead a discus sion on the proposed MI L- HDBK- 52A and pointed o ut some of the probl e areas

David Goodhead announced the nex t Reg ion 9 meeting to be held in November 1982

ATTENDEES

R Hatten J M Perry Ins ti tute G Culbe rtson J M Perry I nst i t t e E R Hamm Rockwell Inte r national G E Brox Tekt ronix I nc D Knapp Tektronix I nc W Collier Tektronix I nc K Cable Northwest Ca ibr at i on Sys R C Ro se nt re t e r NPS Industr Le s H Spanheimer Rockwell I n e r a t i ona l K Harrison Battelle Nor t hwest Labs C Pe t t i t Wash ington P bl l c Power R Ausere Westinghouse Han fo r d B Sc humac he r Exx on Nucl e a r D McCain Rockwell Hanfo rd D BentI iff We stinghouse Ha n fo r d

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[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

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National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

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TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

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Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

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BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

[ WELCOME TO UR NEW EMBERS Heye r-Schul te De1

Caribe Inc Road 402 N Km 12 PO Box 1386 Anasco Puerto Rico 00610 Delegate

Mr Enrique Fuentes Quality Assurance Inspecshy

tion Supervisor

John Fluke Mfg Co Inc 25 B Street Burlington MA 01803 Delegate

Mr Fred M Ka r a s District Manager

Ross Laboratories 6460 Busch Blvd Columbus OH 43229 Delegate

Mr David P Wesolowsk i Senior Instrumentation

Manager

OECO Corporation 712 S E Hawthorne Blvd Portland OR 97214 Delegate

Mr Mike Surratt Test Engineer

Barrios Technology Inc 16902 El Camino Real Houston TX 77058 Delegate

Mr William A Simmons Project Manager

Lear Siegler Energy Proshyducts Divis ion

2040 East Dyer Road Santa Ana CA 92705 Delegate

Mr ROy M Kahler Manager Nondestructive

Test amp Technical Svcs

Calibration amp Consultings Services Inc

1977 Big Bend Drive Des Plaines IL 60016 Delegate

Mr Robert E Bremmer President

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Timothy C Tyson Manager Field amp Shop

Maintenance

American Electronic Lab-orator ies Inc

784 North Lake Blvd Altamonte Springs FL 32701 Delegate

Mr S Frederick Hopkins Branch Manager

Keltec Florida 50 Second Stree t Shalimar FL 32579 Delegate

Mr Glen H Cochran

Fairchild Weston Systems Inc

300 Robbins Lane Syosset NY 11791 Delegate

Mr J S Grevious Manager EMI TE

IBM Corp Dept 44E-031 Tucson AZ 85744 Delegate

Mr John W Spe nce Jr l1etrolog i s t

oy C Inge r s o l l R_sear ch e nter

De s Pla i nfrs I L 0018 ne lega e

tr bull Robe _ R Se n i o r

Or i euro n t r n s t ~ urne n Re shyCo td

1-31-8 Ka ki no k i zak a Meguro- ku

Tokyo 152 Ja pa n Delegate

Mr Yuzo Harada Director

The Aerospace Cor po r a t i on 2350 East El Se g undo I vd

MIS D-1413 El Segundo CA 902 45 Delegate

Mr James T Carroll Instrument Center Supervisor

RD Technology Inc 3744 N Industry Ave

Suite 404 Lakewood CA 90712 Delegate

Mr Ro be rt E Merritt Director-Technical Oper

Bristol Myers Company Inc PO Box 657 Syracuse NY 13201 Delegate

Mr Edward L Gratien Supervisor Instrumentation

Mark Roberts Assoc Inc PO Box 437 Mt Arlington NJ 07856 Delegate

Mr Mark DeLauro President

Automated Technology Associates PO Box 19737 Indianapolis IN 46219 Delegate

Mr Thomas A Pearson Executive Director

Gearhart Ind PO Box 19 36 F Wo r th X 761 01 De l lO g a t e

Me P i 11 Sc ngtlt s Qual i e r

Admi n i s t r a t i o n

Cullen Branch

Southwe s t e r n Public Se r v i ce Compa ny

P O Box 1261 S i xt h amp Tyler Aa r i l l o TX 79170 Delegate

Mr John A Guidry Performance Assurance Engineer

Instruments Canada Company Ltd 107 Prince Charles Drive Georgetown Ontario L7G 3V5 Canada Delegate

Mr Murray Penney President

Battelle Pacific Northwest Lab PO Box 999 Richland WA 99352 Delegate

Mr Larry M Worden Manager QC Section

-36shy

National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

-3 7 shy

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

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COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

National Aerospace La bo r a t o r y 2 Ant Fok kerweg 105g01 Amsterdam 02 0 51 131 13 3 28 Ne t he r 1and s Delegate

Mr O J Koo lwyk Ing

Department o f Transport 10 F Tower c PI ace de Vi lle Ottawa On t a r i o KIA ON8 Ca n ad a De l e g a t e

Mr Dan O Gr a d y Manager Te st I n s t r ume n t

S tandards

Nava l Ai r Rework Facili t ~

Code 944 Naval A r Re r Fa c il i t y NAS

Jacksonv i lle PL 2212 Delega e

Mr Prank G B 00 Cal i br a t i o n nc ea

Ca n adi a n Marconi Compan y 2442 Trenton Avenue To wn of Mount Roya l Mont real Quebec H3P-IY9 Ca n a d a Delegate

Mr Adrien Michaud Chief Met ro logis t

Vol kswagen of Amer ica Inc 27 621 Par kv iew Blvd Warre n HI 4809 2 De l e g a t e

Mr Wolfgang O Krause Supe rintendent QA

Ce r i l e d Measurements Inc 1 middot Sou h Commerc ia l Circ le War n~ r Rob i n s GA 3 109 3 Dele g a t e

tr Robe r t S La mb Vice Pr e side n t - Ge ne r a l

1gtla n a g e r

New Members

SPAR Aerospace Lt d De f e ns e Sys t e ms Div P O Box 1 30 50 Kanata Onta rio K2K lX3 Canada Delega te

Mr C L Walberg Supe rv isor Ca l i b r a t i o n

and Mai n tenanc E

McDonne l l Douglas El ectronics Corp

PO Box 42 6 St Cha rles MO 63301 Delegate

Mr James Ryan Branch Manager Ca l i brat ion

Labs

Russe l l D Young Cons l tants Inc

11 8 04 Lo ngdr a f t Cour t Ga ithersburg MD 20 8 78 De lega te

Mr Russell D Young President

-3 7 shy

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

TRAINING I ORMATION

STATISTI CS IN MEASURMENTS - SHORT COURSE- shyAugus t 2-7 19 82

A si x d ay c our se on stat istic s i n measureme nt s wi l l be presented a t Butler Commun i t y Co l l e ge des igned to acquaint a t t e ndee s with va r i o us stati s t i cal me t hod s a nd the i r appl i c a ti o ns for making e f f e c t i ve de cisions in industry Sev shyer al workshops are planned which wi l l r einshyfo r ce their learning expe r i e nc e a s well as prov ide va r i ous nomographs which attendees may use in t heir specific applicat ions

Course Fee $350

Presented by Jim Lamberti Supe r v i s o r Stat i s t i c a l Systems Pr a t t t amp Whitne y Aircr aft Co

Out l i ne d below are spe ci fic topics planned t o be covered

Topics

1 ANA LYZI NG DATA TO EXTRA CT MEANINGFUL INshyFORMATION

A s t at i s tica l wor ks he ~ no mo c r a h E r cons t r uc t i ng an d in t e r r e t i nq d i s ri bu shyti o ns will be p r e se n t e d

2 APPLI CATION OF CONTI NUOUS AND DISCRET PROBABILITY DIST RIBUTIONS

Table s a nd nomographs as s oc i a t e d w_ the Normal Exp onent ial We LbuLl B shynomi a l and Poisson will be t he mechan i c s for s uc h applications

3 PROCESS CAPABI LI TY ANALYSI S AND ESTABLI SHshyING PROCESS DIMENSIONAL TARGETS

A nomog r aph for e s tima t ing inherent proce ss variability and ae t e r min ing the s i gnif ic anc e of oper a t o r control f ac shytor s wi l l be i nc l uded

4 PROCESS CONTROL METHODS AS A MEANS FOR REDUCI NG PROCESS VARIABILITY AND I NC REASshyING PRODUCTI VIT Y

5 MEASUREMENT EQUI PMENT CA PABILI TY

Eva l ua t i ng meas ureme nt un certaint y

Determining the abilit y of two or mor e pi e c es of equipment t o tell the same story

Partiti oning sources of measur eme nt var i abil ity

Establishing time schedu le s for mainshytaining measurement e q ui pment

6 BASIC EXPERI MENTAL DESIGNS

St ra t egie s i n t he collecti on of da t a s o a s to maxim ize in f ormati on f rom a minishymum nu mbe r o f t es ts

7 ANA LYSIS OF MEANS

Qu i c k method for evaluating the e f f e ct s f r om two o r more varia bl e s

8 QUICK AND DI RTY STATISTI CAL METHODS

Fas t method for making inference s a bo ut va r i a b l e s und er study

FOR COU RSE REG ISTRAT I ON CONTACT

J ames Teza Metrolog y Ce n te r Butler Co mm un i ty Col l eg e Co l l e ge Dr i ve Butle r PA 160 01 (4 12) 28 7-56 74

There i s a li mited n mbe r o f open ings 0

appli c ants wi l l be a c c c p te c ( r i r s - c o f i r s t -se r ve basis

y bull

1 Loe f f l e r J ac k Park

co I t r ai n ing course pac ka g shyo ti nu i ng a t a steady pace a nd o be c ompl e ted by t he t h i r d

ar t e r 19 2 f he comp ute r a ssi sted in shyst ruc io course i s in t he p l ann i ng a nd de s ign 5 age nci be the Ad j un c c Tr aini ng Sub shyco i ee s ne x ma jor pr o j e c t i n 1982 f o l l owshying comple 0 I o f the Basi c Metroloq y cour se package

BalogButler Cou t

Ln Febr ua r y 19 8 2 t he col lege submit t e d t heir me tr ol ogy cur r i c ul urn to t he St a te o f Pe nnshys yl va ni a Burea u o f Vocat iona l Ed uc ati on fo r approv a l a nd applie d f o r a vocational ed uc ashyt i o n g r a nt Recen t l y the head o f the Vocashytional Ed uc a t i on Boa r d Dr J e r r y Ol se n v i s i t ed the co llege to r e vi ew the metrology program Tom Te n Boeve Pr esident o f Butl e r Co l l e ge is ver y optimisti c in his f ee l ing that the co llege will be t he r e cipient o f voca t i o na l g r a n t monie s f o r metrol og y e d uca shyt ion howe ve r th e f ina l de c is i o n will no t be known until 7 1 82 The college has also recei ved a g rant of $2 0 0 00 f rom the Ar mco

-38 shy

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

Training Information

Steel Corporation John Beck P res i d e n t of PENNRECO Cor p who is on the College Board of Trustees is very supporti ve o f the metrolog y program and has been instrumental in raising f un d s and soliciting support for the program

The summer session will consist of dimensional metrolog y and statistics prese nted by the existing facul ty Starting July 31st to August 8th James Lambertti of Pratt amp Whitney will come t o the college and teach statistics relating to measurements and quality control At that time the colle ge will invite s ome of l ocal h igh sch oo l f a c u lt y a nd local industr y t o attend a s i x d ay session on statistics charging a nomina l fee f or each attendee

The annual Sc ience Fair was held on April 1st and 2nd at t he campus to re cruit prospective high school students and was a complet e sucshycess It wa s very well supported by go ve r nme n t a nd industry s upplying both interest ing speakers a nd exhibits Appr oximately 600 high school students v is i t e d the c ampus and a t shytended the Science Fair of which 450 f i l l e d o ut r egistrati on cards A foll ow- up letter enshycouraging each student t o c onsider a career in metrology was s e n t out t o each s t ude nt Addishyti onal f o l l o w- up actions are al so being p l a n shyned to enhance enrollment

Jim Teza i s scheduled to speak at a local science and industr y s y mpo s i um called Tehnishymart at t he Pitt sburgh Co nve n t ion Ce n t e r The topic o f h is talk will be metrol og y e d uca t i o n

Training Aids Library - Jay Varvel

Jay Var vel is working c los e ly with Ken Ar ms t r o ng in retrieving ove rdue video tapes On o f the most f lag r a nt cases ha s been where

me mbe r comp a ny h a s borrowed te n (10 ) v i de o t a pe s a nd has not r etu rned them after six month s in their possession a fter being sent six r e mi nd e r letters a ndn urne r ou s phone calls

Rol and v a vke n has c ompleted the c opying of 3 8 video tape tr aining aids whi ch will help r eshyduce the ba c k l o gge d demand on t he most popular tapes

Training I nformation - Dave Lorenzen

Earl Amano has been comp i l i ng training in forshymation since t he Octo ber 198 2 register was p u b l i s he d Th e su b-committee is working t oward is s uing a supplement wit h c urrent in shyformation befor e the end of May 1 982

Metrolog y P u b l i c i ty - Milt Towne

The design and c onstruction of a metrology display pa ne l was c o mpl ete d and was exhibite d at the Butler Co l l e ge Metrology Sc i e nce Fair April 1 982 Thi s d i s p l ay panel will be u sed t o introduce hi gh sch oo l students and f a c u l t y to a career in metrolog y It will be d i s p l a ye d at high s c ho o l s and at o ther ci vi c f unc t i o n s A 3 5 mm s l i de presenta t i on fo r high sc hoo l student s is also being de ve l o pe d that will be used in conjunct ion with a c anned tal k or an audio tape and presented to h i g h school stushydents

J M Perr y Institute - Jay Va ve l

Jay Va rve l has been interacting wi th the J M Perr y Institute in Ya k i ma Wa s h i ng ton The inst itute is planning t o un d e r t ake a pilot p rog r a m of f ering a metrolog y c urriculum s ta r t i ng with a presentation o n J Ul y 6 19 82 Their p l an is to s t a r t with in s tr umentation student s who a r e already enroll e d a nd c o nvert their pr ogram into a metrology c urr iculum J M Perr y has modeled their c urri c u l um trom the BC3 program The s t a r t ing of th i s p r og r a m will give the west c oast a s o ur ce of f u t u r e metr olshyogists The institute is de ve lopi ng this program with encouragement fr om the me as ureshyment communi ty f o l l o we d by equipmen t donations to st art a metr olog y laboratory

The Education and Training Co mmi t tee will hold a west c o as t meeting at Lo ckhee d in Sunnyvale Cali f ornia on Jul y 20th which is o ne o ay before the Re g i o n 7 meeting which will also be in Su nn y vale and i s two day s be fore the Board of Director s meet ing in Ca r me l Ca l i f o r n i a

J ohn T Marti n Cha i r ma n Ed ucation amp Training Co mmi t t e e

- 39shy

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

NC L CAL AR Summer of 198 2

Region 5 wil l hold a s ummer mee ting a t Rosemoun t Inc Minneapo l is Minneso ta Topic fo r discussion Hystere si s Effect Found in Platinum Res istance The r shymometers

July 20 198 2 Education and Tr a i n i ng Commit tee meeting at Lockheed Su n nyva le Califor ni a

Ju ly 21 198 2 Reg ion 7 me e ti ng at Sunnyvale Ca l i forn ia

Ju ly 22 -23 198 2 Board of Di rectors Meeting Ca r mel Ca lifornia

August 23 - 24 1 98 2 Sem inar o n Fr e q ue nc e Sta nda r ds and Clocks to be held at the National Bur e a u of Standshya r d s 32 5 Broadway Bou lder Colorado Regist ration fe e o f $ 350 deadline July I 198 2 Fo r information call Sandy Howe at ( 30 3) 497-3 21 2

Aug u s t 2 5-2 6 198 2 NBS Time and Frequency Users Semina r to be held at the Na t ional Bu r e a u of Standards 3 25 Br oa dwa y Bou l der Color ado Regis shytration fee of $350 de d li J u l y 1 1982 For information c al l Sa nd o we at (3D] ) 4 9 7-3 21 2

October 4-7 1 98 2 NCSL 1982 Workshop a nd Sympos i um Nation 1 Bu rea u of Standards Ga ithe r bur ~ a ryshy

l and

October 18-21 198 2 ISA 8 2 Phi lad e lph i a I n t e rna t i ona l Con fer shyenc e and Exh ibit Ph iladelph ia Civic Ce nshyt e r Phi lade lphia Pe nnsy lvania

Novembe r 8 198 2 GIDEP Me t rology Committee annua l me e ting at the McCor mick I nn Ch icago I l linois

Nov embe r 9- 1 2 198 2 GIDEP Ann ua l workshop at McCormick Inn Chicago I llinois

January 20 -2 1 198 3 Measur ements Science Conference at Rickshyeys Hyatt Hotel and Conference Center in Pa lo Al t o Ca l i f o r n i a

Jul y 18- 21 1983 NCSL 19 8 3 Wo rkshop and Sy mposium Harvest House Hote l Boulder Colorado

To have your organi zations me e t i ng s and con shyfe re nces announced please send a notice to M J Corr i gan J r Cha i rma n Meet i ngs and Progr a ms Committee

REG I ONAL MEET INGS SCHEDULE

REGI ON 1 Ty p i c a ll y ho lds two (2) meetings per yea r a r e g i o n a l business meeting and a techn ica l se s s i o n Gene rally meetings are held in the spr ing a nd fa ll of each yea r wi th the next me e t i ng being planned for the spring o f 1982

REGIO N 2 Three (3) meet ings a r e held e ach ye a r September J a nuary o r Feb rua r y and May

REGION 3 Plans to ho l d t wo (2) meeti ngs each y e a r spring and f a l l

REGION 4 Plans a re to hold th ree (3) meetings e ach year

REGION 5 Holds two ( 2) me e t i ng s each yea r Janua ry a nd June the time date and place to be announced l a t e r

REGION 6 wi l l o ld a meeting June 982 i t i PHA at Bo u lder Coocado

0 - Ju ly 21 a a nd Nov e mshy_i f o r n i a

ex t meeti ng on Novem shyhe l l e s Restaurant and

Lo ng Be a c h Ca lifornia

wo ( ) meetings are he ld each

REGIa 0 - H bull R ATI ONAL Plans to hold their next dinner meeting on October 5 19 8 2 at the Gaithersburg

(lot t o cel

Sche d u l es will be updated a s firm d a t es and 10 a tions are rece i ved

TOPICS FOR DISCUSSION

To pi c s fo r d i scus s ion a t regiona l me e t i ng s as sug ge s t e d by the Bo a r d of Directors but no t l im i t e d to are as fo l lows

- 40shy

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

NCSL Calendar

1 National Voluntary Laboratory Accreditashytion Program (NVLAP) has proposed a LAP on the accreditation of electromagnetic measshyurements NBS sponsored a s ympos ium on the state of laboratory accreditation in the United States in November 19B1 Ron Kidd Chairman of the Laboratory Evaluation Comshymittee attended representing NCSL He can be contacted for details on discussion topshyics and concerns Please middot c a ll (6l7) 272-3000 ext 1402

2 Support and se r v ice problems e xpe r ienced by member companies in their dealings with NBS

3 MIL-STD-45662 and the proposed MIL-HDBKshy52

4 Training inclUding local efforts and that of Butler County Community College adjunct training NCSL Video Training Library etc

5 MAP What is it and how can you parshyticipate

-41shy

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

BOARD OF DIREC OAS FOR 1982

PRESIDENT

Dean A Brungart Teledyne System s Com pa ny 19601 N ordhoff Street N orthridge CA 91324 (213) 886-2211 Ext 2601

EXECUTIVE VI CE PRESIDENT

Hartwell C Keith TRW DSSG-S2767 One Space Park Redondo Beach CA 90278 (213) 535middot1684

VI CE PRESIDENTS

Dougl as M Doi Lockheed California Company D 57-19 Bld g 322 Plant B-6 PO Box 551 Burbank CA 91520 (213) 847-3018

R B (P ete) England Gene ral Dynamics Pomo n a Mail Zone 4-32 P O Box 2507 Pomona CA 91769 (714) 629-5111 Ext 4312 3945

George Rice D120 031 HC02 Rockwell International 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-2685

H Bryan Werner Westinghous e El ectric Corp RampD Cen ter Beulah Road Ch urch ill Boro P it ts burgh PA 15235 (412) 256-3420

Dr A McCoubrey

SECRETARY

Selwyn P Smith MZ 08 RCA Solid State Div Route 202 Sommerville NJ 08876 (201) 685-6952

TREASURER

Gary Davidson TWR DSS G - S 2767 One Space Park Redondo Beach CA 90278 1213) 535-1684

SPO NSORS DELEGATE

Basc om W Birmingham Director Bould er Laboratories Nationa l Bu reau of Standards Boulder CO 80303 (303) 497-3237

PAST PRESIDENT

J ohn Lee US Instrument Rentals Inc 2988 Ca mp us Drive San Mateo CA 94403 (415) 572-6730

NCSL SECRETARIAT

L Kenneth Armstrong National Bureau of Standards Rm 5001 Radio Bldg Boulder CO 80303 (303) 497-3787 Or call Josephine (Jo) Emery (303) 497-3237

Executive Board Members

DIRECTORS

Robert M La dy (Regio n 4 amp 6) Lockheed Georgia Co Dept 59-13 Z-262 86 S Cobb Drive Mariett a GA 30063 (404) 424-2900

Edward Nem eroff ltRegion 1 amp 2) Guildlirie Instruments Inc 2 Westch ester P la za Elmsford NY 10523 (914) 592-9101

Clifford D Koop 137-152 (Region 5 amp 9)

Rockwell-Collins PO Box 728 Cedar R apids IA 52498 (319) 395middot5554

Hu gh Starling (Region 3) Gen eral El ectric Company Neutron Devi ces Dept P O Box 11508

t Petersburg rr -l3n 3 1l J) 1 179

ITERN TIO NAL DIRECTOR

J Gra ham Cameron D pl of Nationa l Defence ~ ual i ~y Engineering Test Estab ETE 7

Ot awa Ontario CAN ADA KIA OK 2 (RI g) 997-3411

OTHER INT ERESTED PARTIES

Dr B Belanger Ch ief Office of Measurem ent Services Associate Director for Measurement Services Nation al Bureau of Standards National Bureau of Standards Washington DC 20234 Washin gton DC 20234 (301) 921-2805 (301) 921-3301

-42shy

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

COMM ITTEE CHAI MEN

V Administration - Bryan Werner VP Lab Mgmt amp Operat ions - George Rice

3A CALIBRATION SYSTE 1 MAIlAGEMENT 1A MEETINGS AND PROGRAMS

M J Corrigan Jr Robert Guibord

Lockheed Electronics Co Inc TRW 1501 US Highway 22 CS 1 Building S1968 Plainfield NJ 07061 One Space Park (201) 757-1 600 Ext 2734 Redondo Beach CA 90278

(213) 535-0368

1B HONORS AND AWARDS 3B MEASUREMENT ASSURANCE

Hillary A Taff Tennessee Valley Authority Laurel Auxier H16 LAPSC1 Beckman Instruments In c Chattanoga TN 37401 2500 Harbor Blvd (615) 697-4314 Fullerton CA 92634

(714) 773-8430

1C EDUCATION AND TRAINING 3C PRODUCT DESIGN amp SPECIFICATION

John T Martin Westinghouse NES Forest Hills David Hopping

Hewlett-Packard Co Box 855 Bldg 2 VS Pittsburgh PA 15230 1400 Fountain Grove Pkwy(412) 829-3703 Santa Rosa CA 95404 (707) 525-1400

VP Measurement Requirements - Doug Doi 3D AUTO~TIC TEST amp CALIBRATON

2A NATIONAL MEASUREMENTREQUIREMENTS SYSTEM COMMITTEE Delbert H Caldwell D R (Don) Tobey Navy Metrology Engr Center Science Applications Inc P O Box 2436 1330 River Bend Drive Suite 100 Pomona CA 91769 DallasTX 75247 (714) 620-0501 (214) 688-1951

2B LABORATORY EVALUATION VP Communications amp Marketing - Pete England Ron Kidd

Microwave Associates 4A NEWSLETTERSouth Avenue Burlington~ 01803 John Minck 5U (617) 272-3000 Ext 1402 Hewlett-Packard Company Stanford Park Div

1501 Page Mill Road 2C BIOMEDICAL amp PHARMACEUTICAL METROLOGY Palo Alto CA 94304

(415) 857-2060 William F Fitzgerald Travenol Laboratories Inc

4B INFO~TION amp DIRECTORY Rt 120 amp Wilson Rd Round Lake IL 60073 Ralph Bertermann (312) 546-6311 Ex t 2968 G D Searle amp Company

P O Box 5110 ChichagoIL 60680 (312) 982-7611

4C RE COMMENDED PRACTI CES

AlKohler Varian Palo Alto Tube Division A-130 611 Hansen Way Palo Alto CA 94303 (415) 493-4000 Ext 2825

-43shy

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

REGIONAL COORDINATORS

REGION 1

Harry B Haymes Sanders Associates Inc 95 Canal Street Nashua NH 03061 (603) 885-4913

REGION 2

Joseph R Bunti ng Ford Aerospace and Comm Corp Engineering Services Div 2101 Blair Mill Rd Willow Grove PA 19090 (215) 659middot7700 Ext 313

REGION 3

Frederick A Kern NASA Langley Research Center MIS 236 Hampton V A 23655 (804) 827-3234

REGION 4

John P Riley TI -INS-41 NASA Kennedy Space Center FL 32899 (305) 867-4737

GIDEP METROLOGY COMMITTEE

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

MEASUREMENT SCIENCE CONFERENCE

Dean A Brungart Teledyne Systems Company 19601 Nordhoff Street Northridge CA 91324 (213) 886-2211 Ext 2601

AMERICAN ASSO CIATION OF LABORATORY ACCREDITATION

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

REGIO N 5

Doug las Smith Dept 736 Abbott Laboratories 1400 Sheridan Roa d N Chicago IL 60064 (312) 937-4918

REGION 6

Bill Simmons Barrios Technology Inc 16902 E l Camino Real Suite 3A Houston TX 77058 (713) 483-2971

REGION 7 Carl Qui nn Simco Electronics 382 Martin Ave Santa Clara CA 95050 (408) 727-3611

IAISON DELEGATES

OIML

Donald J Grell Lock he 1Mis ile pac o Dept ltI 20 Bl dg ) PO Box )04 Sunnyval e A ~ 4086 (40 ) 742-9329

PRECISION MEASURE ME I ASSOC

Phil Painchaud 1110 W Dorothy Drive Brea CA 92621 (714) 685-0052

ASTM

Ron Kidd Microwave Associates South Avenue Burlingame MA 01803 (617) 272-3000 Ext 1402

COUNCIL FOR OPTICAL RADIATION

Ed Steeb General Electric Lamp Div Nela Park East Cleveland OH 44112 (216) 266-2366 - 44shy

REGION 8

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 BC02 3370 Miraloma Avenue Anaheim CA 92803 (714) 632-5981

REGION 9

David Goodhead Westcon Inc 5101 N Interstate Ave Portland Oregon 97217 (503) 283-0132

INTERNATIONAL DIRECTOR REGION 10

J Graham Cameron Dept of National Defence Quality E ngineering Test Estab

QETE7 Ottawa Ontario CANADA KIA OK2 (819) 997-3411

fE RI A_T SOCIETY FOR ALIIY O TROL

Karl S itel Eastma n Kodak Co Kodak Park MSD Bldg 56 Rochester NY 14650 (7 6) 477-5618

INSTRUMENT SOCIETY OF AMERICA

J M Suraci Lockheed Missiles amp Space Co P O Box 6429 NSB Bangor Bremerton WA 98315 (206) 396-4658

ANSI

Rolf B F Schumacher Rockwell InternationalAutonetics Department 120 HC02 3370 Miral oma Avenue Anaheim CA 92803 (714) 632-5981

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

13031497middot3237

I I middot ~ X E CU T I V E V ICE PRESI DEN T It PAS T P R~S I OENT TREASU RER

HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

(3121937-491 8

0

so

REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

-4 6shy

COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

17141625middot5111 E 43 12

ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

NCSL BOARD OF DIRECTORS 1982

PR ESIDENT

DEAN BRUNGART TELEDYNE SYSTEMS CO 12111 B66 2211 h 2601

SPQNSOR S DE LEGATE

BASC OM BIRMINGHAM NATI ONAL BUREAU OF STANDAROS

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HARTWELL C KEITH JOHN LEE GARY OAVIOSON TRWOSSG U S I NSTRUMENT RENTA LS TRW OSSG

(2131535 16B ~ (41 15716 730 12131 535 16B4

EXECUTIVE BOA RD MEMRERS

NCSL SECR E1ARIA T

L KENNETH ARMSTRONG NATIONAL BUREAU OFSTANDARDS

(303) 457 37B7

if SECRETA RY

SELWYN SMITH RCA

110)) 685 6951

I ADMIKl ISTR ATION

H BRYAN WERNER WESTINGHOUSE ELECTRIC

(4121 256middot3420

J GRAHAM CAMERON OEP T NAT L OEFENCE

IB191 997 3411

NOTE

MEASUREM ENT REOU IREMEN TS

OOUGLAS J CI LOCKHEEOCALIFORNA

12131847 3018

CLIFFORO KDOP ROCKWH L COLLINS

(319) 395middot5554

ALASKA - REGION 9 HAWAII- REGION8 PUERTORICO- REGION4

ROBERT LADY LOCKHEEOmiddotGEORGIA CD

(404) 424middot2900

I LAB MGMT amp OPER AION S

GEORG E RICE ROCKWELL AUTONETICS

(714) 622middot26B5

D IR ECTOR S

EDWARD NEMEROFF HUGH STARLING GUl LOLINE (NST CO GENERAL ELECTRIC CO

(914) 592middot9101 1813 5 ~ 1 8579

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REGION 7 BDB WEBER ~ CARL OUINN (408) 727-3611 o

REGION B BOB WEBER

ROLF SCHUMACHER

NCSL REGIONS

REGION 9 CLIFF KOOP REGION 5

DAVIOGOODHEAO CLIFF KOOP

(503) 283-0132 DOUG SMITH

(7141 632-5981

IN TERNATIONALREGION DIRE CTOR

GRAHAM CAMERON (819)997-3411

REGION 6 BOB LADY

BILL SIMMONS (713) 483-2971

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COMM UN IC AT W N$ amp M AR KETING

R B (PETEI ENGLAND GENERAL DYNAMICS

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ROBERTWEBER LOCKHEEOMISSILES amp SPACE

14 0817422957

REGION3 HUGHSTARLING

FREO KERN (804) 827-3234

REGION4 BOB LAOY

JOHN RILEY (305) 867-4737

DIRECTOR REGIONAL COORDINATOR

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date

------------------ - -- - -------------

HOW TO JOIN NCSL

NCSL is a nonprofit association of laboratories or organizations that main tain or have an intere st related to

measurement standards and calibration facilities Each member organizat ion appoints a member delegate

who has th e responsibili ty of repr esen ting the member company or organization in NCSL Memb er delegat es

working within authori ty limits agreed upon -with th eir appointing offi cers coordinat e members involvement

in NCSL s diverse activities

Make checks payable to th e National Conference of Standards Laboratories and mail with application for

membership to

Secretariat

National Conference of Standards Lab oratories

co Nati onal Bureau of Standards

Boulder CO 80303

PLEA SE PRINT O R TYPE

APPLICATION FOR MEMBERS FC-P

NATIO NAL CONFEREN CE OF STANDARDS LABORATORIES

Member Co or Organization

Address

City State Zip Code

hereby applies for membership in th e National Conference of St andards Laboratories and appoints 8 i -

member delegate

Delegate s Name

Title

Delegate s Business Address

City State Zip ode

Telephone Area Code Num ber Extension

who will serve until further notice The sum of one hu ndred dollars ($100) is enclosed for membership du es for the curr ent calendar year Membership fee includes $25 (or subscrtption to the NeSL quarterly newslett er

Appointing Officer

Official of Memb er-Applicant Organization

Title

Mailing Address

City State Zip Cod e Date