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HEWLETTI' PACKARD

HP Palo Alto area maps, airport bus schedules,seminar enrollment forms and course outlinesare available on request.

PROFESSOR WATTS

HP PRODUCT TRAINING NEWS

1968 Customer Seminar Schedule

Seminars are held at the Hewlett-PackardCompany, 1501 Page Mill Road, Palo Alto,California.

Reservations can be made through your localHP Field Representative or Sales Office.

July 22 - 26 Microwave MeasurementTechniques

July 29 _ Aug. 2 Signal Generators & SweepOScillator Calibration& Maintenance

Aug. 5 - 9 Spectrum Analyzer Mainten­ance & Techniques of Use

Aug. 12 - 16 Data Acquisition SystemMaintenance

Aug. 19 - 23 Digital VoltmeterMaintenance

Aug. 26 - 30

Sept. 2

Sept. 9 - 13

Sept. 16 - 20

Sept. 30 - OCt.

Oct. 7 - 11

Oct. 14 - 18

Oct. 15- 16

Oct. 21 - 25

Oct. 28 - Nov. 1

Nov. 18 - 22

Nov. 28

Dec. 2 - 6

Dec. 9 - 13

Dec. 25

Voltage Measul'ements &Calibration Techniques

UBOR DAY (Holiday)

Solid State Power Supplies& Transistor CircuitMaintenance

Microwave Measuremen tTechniques

4 OScilloscope Maintenance(Low & High Frequency)

Sampling OscilloscopeMaintenance

Basic Microwave Repair &Calibration Techniques

Digital Tape Units (Heldat Mountain View Division)

Frequency and TimeStandards

Patient Monitoring SystemMaintenance

Data Acquisition SystemMaintenance

THANKSGIVING DAY (Holiday)

Microwave MeasurementTechniques

Electronic CounterMaintenance

CHRISTMAS DAY (Holiday)

Your private lin~t(;kcHe,wlett-PackardCustomer Service

MISSING INSTRUMENTSLOST. STRAYED, OR STOLEN

From:~ Electric C01IIpany2700 N. Southport AvenueChicago, 1111nois 60614Raymond J. Rose, Chief Guard

HP 461 A AmplitterSerial 418-00177, USN 1907

HP 721A Power SupplySerial unknown, USN 2067

HP 466A AmplifierSerial 044-00832, TAG 8001

Kay Electric Attenuator0-41 db, 20-0, USN 1665

Kay Electric Attenuator70-0, USN 1950

Tektronix 454 OscilloscopeSerial 8091256, 18564

Simpson 260 Mul timeterTAG-EE 8221

Radar Power SupplySerial unknown

Test Oscilloscope OS-34/USM-32Serial 1748

Test Oscilloscope-TS-34A-APSerial 5496

Fro.. :

Genisco Technology Corp.9367 1I'i11ialll StreetRosemont, Illinois 60018Mr. Fred A. ParkerHP 20lC, OscillatorSerial 351-04912

From:

Hewlett-Packard Eastern Sales Region1060 North Kings HighwayCherry Ifill, New Jersey 08034Mr. Tom RicheyIfP 52538, Frequency Converter Plug-inSerial 716-11267

IfP 5245L, Electronic CounterSerial 716-14908

Harrison 6217A Bench Power SupplySerial 700432

FrOlll:He.... lett-Packard COBIpanyBuilding 5U1501 Page Mill RoadPalo Al to, California 94304

HP l80A OscilloscopeSerial 709-01229

LIBRARY CORNER

Here is a tip frOIll Ron Ancell, Gates RadioCompany, Quincy, Illinois.

A free price list is available from TheGovernment Printing Office describing booksand pamphlets available on electronics.radar, and cOllllI.unications.

Write to: Superintendent of DocUlllentsGovernment Printing OfficeWashington D.C. 20402

Ask for List 82, "Radio and Electricity".

SERVICE NOTES

Here are the latest Service Notes .... a11designed to insure top-notch perforaancefroa your HP faaily instruaents. ServiceNote topics typically include i teas such asmodifications, new or special calibrationtechniques, and special repair procedures.If you would like to receive a cOllplillentarycopy 01 any note, circle the appropriatenUllber of each under the SERVICE NOTE ORDERFOR}!.

DIGITAL TAPE UNITSLIst Of specIal tool requirements.

DIGITAL TAPE UNITSReplacement and adjustment of headgate for Models 2020, 3029, and3030.

FREQUENCY DIVIDER AND DIGITAL CLOCKIl5BR-2 All serials. Alignment ofclock lJIotor.

H20-ll5BR FREQUENCY DIVIDER AND DIGITAL CLOCK--- H20-Il5BR I ModifIcations lor

increased output tick stabilityand alignment of output circuits.

OSCILLDSCOPE130c-6A All serials. Preferredreplacement for Q421, Q441, Q461.

DUAL BEAll OSCILLDSCOPE132A-2 All serials. Preferredreplacement for Q621, Q641, Q661,Q681.

OSCILLDSCOPE14oA-12 serials prefilted 748- andbelow. IIVPS modification forincreased Q601 reHabi 1 i ty.

STORAGE OSCILLOSCOPE14IA 14B serIais prefixed 815­and below. }!odification forilllproved long-term storage.

STORAGE OSCILLDSCOPEI4IA-I5 SeriaIs prefixed 820­and belo",. Iaproved beaa finderoperation.

OSCILLDSCOPE18oAIAR-3 Serials 822-04194 andbelow. Modification for increasedhigh vol tage adjustllent range andprevention of high voltage oscil­lator double moding.

STORAGE OSCILLDSCOPE18IA-I PrecautIons for the replace­ment of storage cathode ray tube.

181A/AR-2 Serials 814-00300 andbelow. Modification to preventhigh voltage oscillator doublemoding.TV WAVEFORM OSCILLDSCOPE19IA/193A-I serials 716-00835 andbelow. Modification to preventhigh frequency roll-off problems.

TV WAVEFORM OSCILLOSCOPE19IA/193A-I serials 716-00835 andbelo... Wodification to preventhigh frequency roll-off problems.

OSCI LLOSCOPE CAMERA19lA-1 serIais 610-01090 andbelo... Woditication to iaprove8wi tching between "Tille" and "Bulb,"and to prevent shutter from trig­gering on noise.

197A-2 Serials prefixed 730- andbelow. Preferred replacement oftransistors for Qll and Q41.

FJoI SIGNAL GENERATOR202H-6A All serials. Modificationto improve ceramic stator mountreliability.

TELEMETRY SIGNAL GENERATOR202J-4A All serials. Modificationto improve ceramic stator mountreliablli ty.

OSCILLATOR POWER SuPPLY KITS204B-1C InstructIons tor Instal­ling a battery-pack, AC power supplyor rechargeable batteries.

PULSE GENERATOR214A-6 All serials. Conversionki t to change standard 50/60 cyclefan to 50/60/400 cycle.

PULSE GENERATOR216A-2 serials below 820-00546.liP part no. 1850-0099. SubstitutingTexas Instruments 2N964 for Motor­ola 2N964.

WAVE ANALYZER312A-3 Serials prefixed 706- andbelow. Recommended replacementfor A9Q3 j A9Q4, A9Q5, A9Q6.

493A

DISTORTION ANALYZER333A1334A-5 serials 624-00800and below. Modification to reducezero offset on the 300v range tobelow 6%.

DISTORTION ANALYZERjj3A)3j4A 5 serials 625-00825 andbelow. Modification to reducezero offset on the 300v range tobelow 6%.

NOISE FIGURE METER34oB)342A-4 AIi serials. Adjust­menl of the noise figure meter loprotect against burnout.

NOISE FIGURE METER340A)j42A-4 All serials. Adjust­ment of the noise figure lIIeter toprotect against burnout.

ELECTRONIC VOLTMETER41Ot-1O Procedure tor replacingthe range and function switches.

VACUUN TUBE VOLTMETER412A-13)413A-3 All serials.Themodulator cable assembly (412A-16A)is now available separately.

412AR-4/413AR-2 All serials.The modulator cable assembly(412A-16F) is now availableseparately.

DC NULL VOLTMETER412A-i3/413A-J All serials.The1II0dulator cable asse.bly (412A-16A)is no... available separately.

412AR-4/413AR-2 All serials. The.odulator cable asselllbly (412A-16F)is no... available separately.

AtrrOVOLTMETER414X-6 Serials 1i30-00825 andbelow. Preferred replacement forA4 power supply and control boardto provide greater reliability.

IX: MICRO VOLT-AMJ.lETER425A-G Ail serials. Modulatorsare no... available in two sub­assellblies for greater reorderingconvenience.

THERIU STOR MOUNT418A-IB Ail serials. Procedurefor checking and replacing thether,dstor asselllbly.

TWT AMPLIFIER493A-I SerIals below 304-00226.Ki t to improve TWT cooling.

TWT AMPLIFIER495A-l SerialS below 746-01056.Ki t to improve TWT cooling.

SIGNAL GENERATOR612A-9 serials below 712-05783.Preferred replacement for CR21for i.proved precis ion.

738A

SIGNAL GENERATORG14A-4 All ser [als. Rec01llmendedfuse change to meet new currentrating.

SIGNAL GENERATORGI8t-lA)B2oB-lA Serials below740-00701. Preferred replacementfor R523 for improved l::J' opera tion.

SIGNAL GENERATORGI8C-lA)620B-IA Serials below740-00601. Preferred replacementtor R523 for improved t.F operation.

SWEEP OSCILLATORS690AlB-B AIi serialS. Procedurefor adding a blanking output.

SWEEP OSCIlLATORSG90A/A-B All serialS. Procedurefor adding a blanking output.

VOLTMETER CALI BRATOO138Ak-1 All serials.Procedure for incorporating Model738BR characteris tics.

738AR-3/738BR-l All serials.Recommended replacemen t for Ll.

VOLTMETER CALIBRATOR738AR 3) 138BR-I All serials.Preferred replacement for Ll.

TYPE N CONNECTORS7140-1 EXplanation of differencesbetween various kinds of Type Nconnectors.

VISO SCOPE~tion 01 all serials.Preferred replacement for Q603,613, 614, 617, 618, 622, 625, 626.

SLOTTED LINE805A-3 Procedure for replacingend connectors stock numbersBC-95B and 8C-95C.

DIFFERENTIAL AMPLIFIER1401A 3 Serials 104-00275 andbelow. Modification to prevent Qland Q2 burnout due to turn-ontransients.

TIME BASE AND DELAY GENERATOR142IA-4 serials prefixed below803-. Modi fica tion to preventburnout of CR305, 306, 311 and/or312 when integrator output isaccidentally grounded.

TIME BASE~Serials 709-00350 andbelow. Modification to preventburnout of CR305, 306, 311, 312",hen integrator output is acciden­tally grounded.

1423A-2 Serials 709-00350 andbelo.... Recommended replace.enttor A204.

SAMPLING TIME BASE1424A I serials prefixed SOI­00225 and below. Diode holdersthat perllit solderless replacementof A2 CRI and A2 CR2.

1424A-3 Serials S03-00270 andbelow. Preferred replacelllent ofA4 board for i.proved linear i ty.

SAlIIPLING TIlliE BASE AND DELAYGENERATOR~Serials prefixed 74S­00675 and below. Tunnel diodeholders are now available.

FOUR CHANNEL VERTICAL AMPLIFIER180d I Modification to permitusing 1820A, serial 624-00150 andbelow, or 182lA, scrial 630-00500and below, in 1804A.

COMPUTFR~ Modification of 4K memoryto SK memory.

HIGH SPEED TAPE PUNCH2753A 2 Ail serials. Crossreference of replaceable partsTally Corporation/Hewlett-Packard

DIGITAL MAGNETIC TAPE UNIT3030-8 Ail serials below 330.),Iodification to illprove stopcharacteris tic.

3030-9 All serials below 384.),Iodification to decrcase vacuuIIbackprcssure.

DIGITAL VOLTMETER3430A-I9 Modifications, replace­Illent parts, and procedures forimproved performance.

AtrrOJ,lATIC RANGE SELECTOR3442A-2 SerialS 440-03190 andbelow. Preferred replacement forAIQS for grea ter reliability.

HIGH GAIN AUTO RANGE UNIT3443A-3 Serials 444-03725 andbelow. Modification to eliminatecomponent failures while auto­ranging wi th high input vol tages.

DC MULTI-FUNCTION UNIT3444A-3 Serials 644-03750 andbelow. Preferred replacement forAq2Q to 1IIIprove reliability.

DIGITAL VOLTMETER3460B-7 Serials 813-00600 andbelow. Yodification to permitreliable operation with 5050A.

;~'?klllf C~:~f:l:Rgg§_KS~~P~~XIERbelow. Preferred replacement forA32Q2 and A32Q3 for greaterreliability.

FM RECORD AMPLIFIER3535A-l Change or ""attage ratingof resistor AIRII for greaterreliability.

TRANS"'I SSION GENERATOR37oIA-I Ail serials. Preferredreplacement for A6QI for improvedIF alllplifier input.

370lA-2 All serials. Preferredreplacement for A9Q5, A9Q6, A9QIO,AllQI4, AIlQ1S.

3701A-3 Serials below U80S-00IS!.lIlodification to insure constantbaseband signal.

DE),IODULATOR DISPLAY3702A-I Serials U740-oo101 thruU740-00109. Modification for theprotection of the channel switch­ing circuitry.

3702A-2 All serials. Preferredreplacement for A2Q3 for improvedIF amplifier input.

3702A-3 Serials below U750-00120.Modification for an increase 1nbandwidth of the IF responsechannel.

3702A-4 Serials below US05-001S1.Modification for an improvement inreturn loss at the baseband input.

3702A-5/3703A-I Serials belowUS05-00151. Modification to insuremaximulIl group delay measuringcapability.

GROUP DELAY DETECfOR3702A-5/3703A-l All serials.Modification to insure aaximUIIgroup delay measuring capability.

ANALOG TAPE SYSTDI3950-273955-2 Recommended testequipment, service tools andaccessories.

ANALOG TAPE SYSTEM3950-273955-2 Recommended testequipment, service tools, andaccessories.

VECTOR IMPEDANCE METER4BuuA-2 Serials prehxed 805­and below. Modification kit forthe replacement of thermistorA17R14.

DIRECT J.lEASUREMENT PLUG-IN4BolA-2 Serials 802-00569 andbelow. Modification to preventmeter oscillation.

vrCTQR J MPEDANCE METER4815A 2 Ail serials. Circuitchanges when replacing transistorsand prevention of aeter oscillation.

4815A-3 Serials prefixed 749- andbelow. lIloditication to improveALC bandwidth control.

DIGITAL RECORDERSOSOA-2 Modification to providestorage capacity.

FREQUENCY SYNTHESIZERSlloAlB-I installation of option02 thru 04

FREQUENCY SYNTHESIZER511oA/B-I Instructions torinstallation of option 02 thru 04.

DIGITAL VOLllIETER PLUG-IN5265A-2 Replacement Of CR3A&8and CRlAIt8.

MODULATOR~Serials below 736-00876.Preferred replacement tor T40l forimproved high frequency perfonlance.

POLAR DI SPLAY8414A-2 Serials 749-00215.Modification for improved grounding.

8414A-3 Serials 729-00150 andbelow. Replacement of transistorsfor improved reliability.

SIGNAL GENERATOR8614A-77 86148=2786l6A-5/86l6B-2Serials below 748-01851. Instal­lation of fuse and zener diode toincrease reliabili ty.

8614A-8/86l6A-6 Serials below749-02001. Modification to pro­tect klystron filaments.

86l4A-9/86l4B-3/86l6A-7/86l68-3Serials below 749-02151. Modifi­cation for reduced power supplyripple and residual FM.

SIGNAL GENERATORS614A-7/8614B-Z/86l6A-5/86l68-2.Serials below 748-00291. Instal­lation of fuse and zener diode toincrease reliability.

8614A-9/86148-3/86l6A-7/86l68-3Serials below 748-00341. Modifi­cation for reduced power supplyripple and residual FM

SIGNAL GENERATOR86ld 7/8614B-z786l6A-5/86l6B-2Serials below 748-01231. Instal­lation of fuse and zener diode forincreased reliability.

8614A-8/86l6A-6 Serials below749-01281. Modification to pro­tect klystron filaaents_

8614A-9/86l48-3/86l6A-7/86l68-3Serials below 749-01356. Modifi­cation tor reduced power supplyripple and residual FII.

SIGNAL GENERATOR86Id-7/8614B-Z/86l6A-5/86l68-2Serials below 748-00266. lnstal­la tion of fuse and zener diode forincreased reliabili ty.

8614A-9/86148-3/8616A-7/86168-3Serials below 748-00316. Modifi­cation for reduced power supplyripple and residual FM.

SWEEP OSCILLATOR8690A-8 Serials prefixed 803­only. Recommended replacementfor pen lilt relay A9K1.

8690A-9 Serials below 717-00911.Improved power supply reliabili tyand square wave sy_etry.

CONTROL UNIT8706A-I Serials below 803-00181.Preferred replacelllent for A2Q7for i.proved reliability.

R.F. UNIT HOLDER8707A-I serials below 815-00231.Addition of a clamp diode toincrease reliability.

PLUG-IN EXTENDERI0407A-I i1Iodlfication to iIDproveperformance and eliminate oscil­lation on Model 180/181 OScillo­scope .

Cut Along Dotted Line

SERVICE NOTE ORDER FORM ... Here 1s a list of the latest Service Notes to help insure a lIlaXiaUIiusage frOlll your lIP fa_ily instruments. To obtain a copy, si_ply circle the Service Note numberyou wish. Cut along dotted line, enclose this portion of Bench Briefs in an envelope, and sendit to your nearest HP Field Office or to us at HP Customer Service. In Western Europe, sendorder to Hewlett-Packard S. A., 54 route des Acacias, Geneva. Swi t:zerland.

Do you have a friend who would enjoy receiving Bench Briefs? If so, please give us his nallleand address.

Nallle, Address _

101-42101-43115BR-2H20-115BR-ll30C-6A132A-2140A-12141A-14B141A-15180/AR-3181A-l181A/AR-2191A/193A-I197A-l197A-2

202H-6A202J-4A204B-IC214A-6216A-2312A-3333A/334A-5340B/342A-4410C-IO412A-13/413A-3412AR-4/413AR-2414A-6425A-6478A-IB493A-l

495A-l612A-9614A-4618C-IA/620B-IA690AB-6738AR-l738AR-3/738BR-l7740-1780 6 2805A-31407A-31421A-41423A-l1423A-21424A-l

1424A-31425A-41804A-l2115A-l2753A-23030-83030-93430A-IB3442A-23443A-33444A-33460B-73461A-l3535A-l3701A-l

3701A-2370lA-33702A-l3702A-23702A-33702A-43702A-5/3703A-l3950-2/3955-24800A-24801A-24815A-25050A-25110A/B-l5265A-28403A-5

8414A-28414A-38614A-7/86148-2/

8616A-5/86168-28614A-8/8616A-68614A-9/8614B-3/

8616A-7/86168-38690A-88706A-I8707A-ll0407A-l

HEWLETT·PACKAROCUSTOMER

SERVICECENTER

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