a tia/eia-tsb-155 current status category 7a performance ...ieee 802.3an:2006 clause 55.7 link...

CONTENTS

The New Standards

Business Issues

© 2007 The Cabling Partnershipwww.it-cabling.com www.e-readybuilding.com

P. O. Box MT65, LEEDS, LS17 8YD. United Kingdom Tel: +44 (0) 113 232 3721 Fax: +44 (0) 113 293 2632

Compliance Claims

Current Status

Performance Specification

Commercial

Installation

Class EA - Augmented Cat. 6

Class FA - Impact on Cat. 7

Conformance Testing

Measurement Errors

ϕCabling for 10GBASE-T and Beyond

-A Tangled Web

The impact of pre-standard products on the supply industry

Category 7A

CLC TR 50173-99-1

ISO/IEC TR 24750

TIA/EIA-TSB-155

ISO/IEC 11801 A1.1

ISO/IEC 11801 A1.2

Class EA

Class FA

Category 6A

TIA/EIA-568-B.2-10

AugmentedCategory 6

ISO/IEC 11801

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ϕ

Mike Gilmore

Mike Gilmore

Managing Directore-Ready Building

Standards Activities

Mobile: +44 (0) 7860 110563 e-mail: [email protected]

MemberJTC1 SC25 WG3: Generic Cabling

Convenor JTC1 SC25 WG3 CITG: Cabling Implementation Task Group

JTC1 SC25 WG3 IPTG: Industrial Premises (Cabling) Task Group

Convenor TC215 WG1: IT Cabling

Secretary TC215 WG2

ChairmanTCT7: Telecommunications - Installation Requirements

Chairman TCT7/-/1: Cabling infrastructure design, planning and commissioningTCT7/-/3: Cabling: Infrastructure standards - UK implementation panel

Technical and Standards DirectorFibreoptic Industry Association

FIAwww.fia-online.co.uk

Cabling for 10GBASE-Tand Beyond

DirectorTelecommunications Infrastructure Advisory Boardwww.fia-online.co.uk/TIAB

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Compliance ClaimsThe New Standards

10GBASE-T cablingNew channels, links and components

Augmented Category 6Class EA/FA (and Class F)


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10GBASE-T: IEEE 802.3anThe New Standards


IEEE 802.3an:2006 Clause 55.7 Link segment characteristics

10GBASE-T is designed to operate over ISO/IEC 11801 Class E or Class F 4-pair balanced cablingthat meets the additional requirements specified in this subclause

Each of the four pairs supports an effective data rate of 2500 Mb/s in each direction simultaneously

The term “link segment” used in this clause refers to four duplex channels

Specifications for a link segment apply equally to each of the four duplex channels

All implementations of the balanced cabling link segment specification shall be compatible at the MDI

It is recommended that the guidelines (proposed) inANSI/TIA/EIA-TSB-155, ISO/IEC TR-24750, ANSI/TIA/EIA-568-B.2-10, and ISO/IEC 11801 Edition 2.1

be considered before the installation of 10GBASE-T equipment for any cabling system

Minimum Cat. 6 “RJ45” unscreened/screened plus additional requirements

IEEE 802.3an:2006 Clause 55.7.1 Cabling system characteristics

The cabling system used to support 10GBASE-T requires4 pairs of ISO/IEC 11801 Class E or Class F balanced cabling with a nominal impedance of 100 ΩΩΩΩ

Operation on other classes of cabling may be supported if the link segment meets the requirements of 55.7

10GBASE-T is an ISO/IEC 11801 Class E and Class F application with the additional transmissionrequirements specified in this subclause …. Mitigation practices may be required—see Annex 55B

10GBASE-T uses a star topology with Class E or Class F balanced cabling used to connect PHY entities

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10GBASE-T: IEEE 802.3anThe New Standards


IEEE 802.3an:2006 55.7.2 Link segment transmission parameters

A link segment consisting of up to 100 m of Class E or up to 100 m of Class F that meets the transmissionparameters of this subclause provides a reliable medium

The transmission parameters of the link segment include

• nominal impedance• delay parameters

• insertion loss• ELFEXT

• NEXT loss (NEXT)• MDNEXT loss (PSNEXT)• return loss

In addition, the requirements for the alien crosstalk coupled “between” link segments is specified

ISO/IEC 11801 Class E specificationsextended by extrapolating the formulasto a frequency up to 500 MHz withappropriate adjustments for lengthwhen applicable as specified in ISO/IECTR-24750 and TIA/EIA TSB-155

ISO/IEC11801 Class E specificationsextended beyond 250 MHz by utilizingthe equations referenced in TIA/EIATSB-155

ISO/IEC TR 24750

Category 6 unscreened55 m

Class F ISO/IEC TR 24750

Class E unscreened

TIA/EIA TSB-155

100 m

ISO/IEC TR 24750

Category 6 screened

Class E screened

TIA/EIA TSB-155

ISO/IEC11801 Ed 2.1

Augmented Category 6

Class EA

TIA/EIA 568-B.2-10

Supported link segment distances Cabling Cabling reference

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Class E ChannelThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class E Chnl RL Class E Chnl lL Class E Chnl NEXTClass E Chnl PSNEXT Class E Chnl ELFEXT Class E Chnl PSELFEXT

NEXT, PSNEXT informative for IL < 4.0 dB

RL informative for IL < 3.0 dB

ACR (i.e. NEXT- IL), PSACR normative

DC loop resistanceResistance unbalance

Parameters not shownACR PSACR

Operating voltage

Unbalance attenuation

Current capacity

Coupling attenuationPower capacity1

1 Not present in EN 50173 standards

DelayDelay skew

544+36/√f ns (max)50 ns (max)

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10GBASE-T CablingThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

10GBASE-T Chnl RL 10GBASE-T Chnl lL10GBASE-T Chnl NEXT 10GBASE-T Chnl PSNEXT10GBASE-T Chnl ELFEXT 10GBASE-T Chnl PSELFEXT

Delay (2-500 MHz)Delay skew (all f)

580 ns50 ns (max)

Parameters not shownPSANEXT

PSAELFEXT

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Class F ChannelThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class F Chnl RL Class F Chnl lL Class F Chnl NEXTClass F Chnl PSNEXT Class F Chnl ELFEXT Class F Chnl PSELFEXT


NEXT, PSNEXT informative for IL < 4.0 dBACR (i.e. NEXT- IL), PSACR normative



Operating voltage


Current capacity



DelayDelay skew

544+36/√f ns (max)50 ns (max)

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10GBASE-T PSANEXTThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dBIL = 35.9 dB = ~100 mX1 = 62 dB

IL = 20.3 dB = ~55 mX1 = 47 dB

IL ≤ 6.3 dBX1 = 33.5 dB

Attenuation dependent parameter

4-pair “average” shall be 2.5 dB higher than limits shown

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10GBASE-T PSAELFEXTThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Attenuation and length dependent parameter

IL = 35.9 dB = ~100 mX2 = 37.9 dB

IL = 20.3 dB = ~55 mX2 = 33.7 dB

IL ≤ 10 dBX2 = 32.5 dB

4-pair “average” shall be 4 dB higher than limits shown

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Alien Xtalk Trade-OffThe New Standards


IF YOU FAIL EITHER PSANEXT OR PSAELFEXT

12 STEP PROCESS TO CALCULATE ACTUAL APPLICATION REQUIREMENT

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AXT and Screened CablingThe New Standards


Screened cabling provides adequate AXT performance

ISO/IEC TR 24750

Category 6 unscreened55 m

Class F ISO/IEC TR 24750

Class E unscreened

TIA/EIA TSB-155

100 m

ISO/IEC TR 24750

Category 6 screened

Class E screened

TIA/EIA TSB-155

Supported link segment distances Cabling Cabling reference

IEEE 802.3an:2006 ASSUMPTIONS

PSANEXT: Screened > 15 dB (may be even >28.5 dB) better than unscreened

PSAELFEXT: Screened > 4.2 dB (may be even >5.4 dB) better than unscreened

Class F is screened

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TR TriumvirateThe New Standards


ANSI/TIA/EIA

IEEE 802.3an

TSB-155 Guidelines for the assessment and mitigation ofinstalled Category 6 cabling to support 10GBASE-T

ISO/IEC TR 24750Information technology - Assessment and mitigationof installed balanced cabling channels in order tosupport IEEE802.3 10GBASE-T

CLC TR 50173-99-1 Cabling guidelines in support of 10 GBASE-T

Parameter name correction PSAELFEXT corrected to PSAACR-F

Parameter name correction

ACR amended to ACR-N

PSACR amended to PSACR-N

PSELFEXT corrected to PSACR-F

ELFEXT corrected to ACR-F

PSAELFEXT corrected to PSAACR-F

Parameter name correction

ACR corrected to ACR-N

PSACR corrected to PSACR-N

PSELFEXT corrected to PSACR-F

ELFEXT corrected to ACR-F

PSAELFEXT corrected to PSAACR-F

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Intent of the TRsThe New Standards


IEEE

PP CP TOCC

PPCC PP CC

Backbone cablingimplementation

Link segment

Horizontal cablingimplementation

WA

ISO/IEC, EN and ANSI/TIA/EIA

Channel - Transmission

To define the channel requirements to support 10GBASE-T-

in addition to those of Category 6 channels (TIA) and Class E channels (RoW)

ISO/IEC TR 24750/CLC TR 50173-99-1 state that Class F meets the requirements of 10GBASE-T

Once again assuming that Class F is screened

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TR Return LossThe New Standards


0

5

10

15

20

25

1 10 100 1000

Frequency (MHz)

dB

ISO/IEC 24750 PL RL TSB-155 PL RL TR Chnl RL

RL informative for IL < 3.0 dBIN ISO/IEC 24750 AND CLC TR 50173-99-1

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TR Insertion LossThe New Standards


0

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Frequency (MHz)

dB

TSB-155 Chnl IL TSB-155 PL IL ISO/IEC 24750 Chnl IL ISO/IEC 24750 PL IL

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TR NEXT/ELFEXTThe New Standards


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20

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40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

TR PL NEXT TR Chnl NEXT TR PL ELFEXT/ACR-F TR Chnl ELFEXT/ACR-F

IN ISO/IEC 24750 AND CLC TR 50173-99-1PSNEXT informative for IL < 4.0 dBPSACR-N (i.e. PSNEXT- IL) normative

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TR PSNEXT/PSELFEXTThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

TR PL PSNEXT TR Chnl PSNEXTTR PL PSELFEXT/PSACR-F TR Chnl PSELFEXT/PSACR-F

IN ISO/IEC 24750 AND CLC TR 50173-99-1PSNEXT informative for IL < 4.0 dBPSACR-N (i.e. PSNEXT- IL) normative

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ACR-N/PSACR-N:CBSBAThe New Standards


-40

-20

0

20

40

60

80

1 10 100 1000

Frequency (MHz)

dB

ISO/IEC 24750 PL ACR/ACR-N ISO/IEC 24750 Chnl ACR/ACR-NISO/IEC 24750 PL PSACR/PSACR-N ISO/IEC 24750 Chnl PSACR/PSACR-N

ISO/IEC 24750CLC TR 50173-99-1

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TR CablingThe New Standards


10GBASE-T Technical Reports

• intended for the validation of installed cabling

• re-verification of performance to 500MHz

• AXT failures dealt with by

• relaxed limits based on insertion loss and length

• trade-offs between PSANEXT and PSAELFEXT/PSAACR-F • based on measured results for an installed channel

• mitigation techniques

• NOT intended for the the specification of new material

• subtle differences in RL and IL requirements

• ISO/IEC 24750/CLC TR 50173-99-1 more stringent for permanent link RL

• ISO/IEC 24750/CLC TR 50173-99-1 more stringent for permanent link IL (hi-f)

• intended for the validation of installed CHANNELS

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New ChannelsThe New Standards


ANSI/TIA/EIA

Addendum 10 Transmission performance specifications for 4-pair100 ΩΩΩΩ Augmented Category 6 cabling

ISO/IEC 11801 Ed.2

Class EA and Class FA channels

Information technology - Generic cabling forcustomer premises

A1.1

-568-B Commercial Building Telecommunications CablingStandard

-568-B.2 Balanced Cabling

11801 Ed.2 Class F channels

Amendments to channel Classes D, E and F

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New Links and ComponentsThe New Standards


ANSI/TIA/EIA

Addendum 10 Transmission performance specifications for 4-pair100 ΩΩΩΩ Augmented Category 6 cabling

ISO/IEC 11801 Ed.2

Class EA and Class FA links


A1.2



Category 6A and Category 7A components

11801 Ed.2 Category 7 components

Amendments to link Classes D, E and F

Amendments to component Categories 5, 6 and 7

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Current StatusThe New Standards

10GBASE-T cablingISO/IEC TR 24750, CLC TR 50173-99-1

ANSI/TIA/EIA-TSB-155

and beyond


ISO/IEC 11801 Ed.2 A1.1 ISO/IEC 11801 Ed.2 A1.2ANSI/TIA/EIA-568-B.2-10

BS EN 50173-X

BS PD CLC TR 50173-99-1

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10GBASE-T Technical ReportsThe New Standards


ANSI/TIA/EIA TSB-155 Guidelines for the assessment and mitigation of

installed Category 6 cabling to support 10GBASE-T

ISO/IEC TR 24750Information technology - Assessment and mitigationof installed balanced cabling channels in order tosupport IEEE802.3 10GBASE-T

CLC TR 50173-99-1 Cabling guidelines in support of 10 GBASE-T

Published

Published

Published

Based onISO/IEC 24750

but withimproved text re-

mitigation(taken from both

other TRs)

BSI PD CLC TR50173-99-1 Cabling guidelines in support of 10 GBASE-T

Approved forpublication

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New Performance StandardsThe New Standards


ANSI/TIA/EIA

Addendum10 Transmission performance specifications for 4-pair100 ΩΩΩΩ Augmented Category 6 cabling

ISO/IEC 11801 Ed.2



A1.1



ISO/IEC 11801 Ed.2 Information technology - Generic cabling forcustomer premises

A1.2



Amendments to component Categories 5, 6 and 7

Amendments to channel Classes D, E and F

Amendments to link Classes D, E and F

Draft 10

Circulated 17/12//07

1st FDAMunderway

Deadline: 02/08

2nd PDAMunderway

Deadline: 02/08

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Migration to CLC and BSThe New Standards


EN 50173-1 Ed.2:2007

Minor “easy” changes

Information technology - Generic cabling systems -Part 1: General requirements

A1: 2008




Information technology - Generic cabling systems -Part 1: General requirements

A1: 2008

BS EN

Amendments to channel Classes BCT-B and BCT-C

Amendments to component Categories

11801 Ed.2A1.1

A1.2

50173-1 Ed.2:2007

A2: 2009?Ed.3:2009?

A2: 2009?

Information technology - Generic cabling systems -Part 1: General requirementsBS EN 50173-1 Ed.2:

2009?

11801 Ed.2

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Break

Category 7A

CLC TR 50173-99-1

ISO/IEC TR 24750

TIA/EIA-TSB-155

ISO/IEC 11801 A1.1

ISO/IEC 11801 A1.2

Class EA

Class FA

Category 6A

TIA/EIA-568-B.2-10

AugmentedCategory 6

ISO/IEC 11801

Cabling for 10GBASE-T and Beyond-

A Tangled Web



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Performance SpecificationPerformance Specification

Existing parameters

New-name parametersNew parameters

Electromagnetic performance characteristics


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Existing ParametersClass EA - Augmented Cat. 6




1 Not present in 568-B.2-10

Balanced cablingInsertion lossReturn lossNEXT

ELFEXT

ACR1

Operating voltage1

Power capacity1,2

DC loop resistance1

Resistance unbalance

Propagation DelaySkew

PSNEXT

PSELFEXT

PSACR1

Current capacity1

Coupling attenuation1

TCLELTCTL

ANSI/TIA/EIA-1005

ISO/IEC 24702 EN 50173-1:2007

MICE


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Electromagnetic PerformanceClass EA - Augmented Cat. 6



0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Chnl TCL Chnl ELTCTL Chnl Coupling Attenuation

Screened cabling onlyClass D, E, EA, F, FA


MICE = E11

TCL

MICE = E11

MICE = E11

Unscreened cabling onlyClass D, E, EA, F, FAAugmented Cat. 6

ELTCTL

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New-Name ParametersClass EA - Augmented Cat. 6


Balanced cabling

ACR-F (pair-to-pair ACR Far End)PS ACR-F (PSACR Far End)ACR-N (pair-to-pair ACR Near End)PS ACR-N (PSACR Near End)

Insertion lossReturn lossNEXT

Operating voltage1

Power capacity1,2

DC loop resistance1



TCLELTCTL


PSNEXT

Current capacity1



ELFEXT

ACR1PSELFEXT

PSACR1

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New ParametersClass EA - Augmented Cat. 6


PS ANEXT (worst pair)PS ANEXT (average)PS AACR-F (worst pair)PS AACR-F (average)

Alien crosstalk

Balanced cablingInsertion lossReturn lossNEXT

Operating voltage1

Power capacity1,2

DC loop resistance1



TCLELTCTL


PSNEXT

Current capacity1



ACR-F

ACR-N1PS ACR-F

PS ACR-N1

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SummaryClass EA - Augmented Cat. 6





Balanced cabling


Operating voltage1

Power capacity1,2

DC loop resistance1



TCLELTCTL


PSNEXT

Current capacity1

ACR-F

ACR-N1PS ACR-F

PS ACR-N1

SIGNAL TRANSMISSION PARAMETERS

POWER TRANSMISSION PARAMETERS

ELECTROMAGNETIC PARAMETERS

Balance

Isolation

Isolation

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Class EA - Augmented Cat. 6Class EA - Augmented Cat. 6

ChannelsComponents and permanent linksDifferences


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10GBASE-T ChannelsClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB


DC loop resistance1

Resistance unbalance1

Parameters not shownACR-N, PSACR-N1

Operating voltage1

TCL1, ELTCTL1

Current capacity1


Power capacity1,2

NEXT, PSNEXT informative for IL < 4.0 dBACR-N (i.e. NEXT- IL), PSACR-N normative


IN ISO/IEC 24750 AND CLC TR 50173-99-1


1 Not present in TSB-155

PSANEXT, PSAACR-F

DelayDelay skew

544+36/√f ns (max)50 ns (max)

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Class EA ChannelsClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Ea Chnl RL Class Ea Chnl lL Class Ea Chnl NEXTClass Ea Chnl PSNEXT Class Ea Chnl ACR-F Class Ea Chnl PSACR-F




Parameters not shownACR-N, PSACR-N

Operating voltage

TCL, ELTCTL

Current capacity



PSANEXT, PSAACR-F

DelayDelay skew

544+36/√f ns (max)50 ns (max)

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10GBASE-T ChannelsClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB


DC loop resistance1

Resistance unbalance1

Parameters not shownACR-N, PSACR-N1

Operating voltage1

TCL1, ELTCTL1

Current capacity1


Power capacity1,2



IN ISO/IEC 24750 AND CLC TR 50173-99-1


1 Not present in TSB-155

PSANEXT, PSAACR-F

DelayDelay skew

544+36/√f ns (max)50 ns (max)

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Augmented Category 6 ChannelsClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Aug. Cat.6 Chnl RL Aug. Cat.6 Chnl lL Aug. Cat.6 Chnl NEXTAug. Cat.6 Chnl PSNEXT Aug. Cat.6 Chnl ACR-F Aug. Cat.6 Chnl PSACR-F


Parameters not shown

TCL, ELTCTL


PSANEXT, PSAACR-F

DelayDelay skew

544+36/√f ns (max)50 ns (max)

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Class EA ChannelsClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Ea Chnl RL Class Ea Chnl lL Class Ea Chnl NEXTClass Ea Chnl PSNEXT Class Ea Chnl ACR-F Class Ea Chnl PSACR-F





Operating voltage

TCL, ELTCTL

Current capacity



DelayDelay skew

544+36/√f ns (max)50 ns (max)

PSANEXT, PSAACR-F

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Channel PSANEXTClass EA - Augmented Cat. 6


0

10

20

30

40

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70

1 10 100 1000

Frequency (MHz)

dB

Class Ea/Aug. Cat. 6 Chnl PSANEXT Class Ea/Aug. Cat. 6 Chnl PSANEXT (low IL)

4-pair “average” shall be 2.5 dB higher than limit shown

IL = 35.9 dB = ~100 m

IL = 20.3 dB = ~55 m

IL ≤ 6.3 dB

10GBASE-T

10GBASE-T

10GBASE-T

IL = 33.9 dB = ~100 mClass EA, Aug. Cat. 6

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ϕ 0

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1 10 100 1000

Frequency (MHz)

dB

Class Ea/Aug. Cat. 6 Chnl PSAACR-F

Channel PSAACR-FThe New Standards


IL = 35.9 dB = ~100 m

IL = 20.3 dB = ~55 mIL ≤ 10 dB

10GBASE-T

10GBASE-T

4-pair “average” shall be 4 dB higher than limit shown

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Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Category 6A CableThe New Standards


0

10

20

30

40

50

60

70

80

1 10 100 1000

Frequency (MHz)

dB

Cat. 6a Cable RL Cat. 6a Cable lL Cat. 6a Cable NEXTCat. 6a Cable PSNEXT Cat. 6a Cable ACR-F Cat. 6a Cable PSACR-FCat. 6a Cable PSANEXT Cat. 6a Cable PSAACR-F

Parameters not specifiedELFEXT, PSELFEXT

TCL, ELTCTLCoupling attenuation

Parameters not shownDC loop resistance

Resistance unbalanceOperating voltageCurrent capacity

Delay (100m)Delay skew (100 m)

534+36/√f ns (max)45 ns (max)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Augmented Category 6 CableThe New Standards


0

10

20

30

40

50

60

70

80

1 10 100 1000

Frequency (MHz)

dB

Aug. Cat.6 Cable RL Aug. Cat.6 Cable lLAug. Cat.6 Cable NEXT Aug. Cat.6 Cable PSNEXTAug. Cat.6 Cable ACR-F Aug. Cat.6 Cable PSACR-FAug. Cat.6 Cable PSANEXT Aug. Cat.6 Cable PSAACR-F

TCL, ELTCTL

Parameters not shownResistance unbalance

Delay (100m)Delay skew (100 m)

534+36/√f ns (max)45 ns (max)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Category 6A ConnectionsThe New Standards


0

10

20

30

40

50

60

70

80

1 10 100 1000

Frequency (MHz)

dB

Cat. 6a CH RL Cat. 6a CH NEXT Cat. 6a CH PSNEXTCat. 6a CH ACR-F Cat. 6a CH PSACR-F Cat. 6a CH PSANEXTCat. 6a CH PSAACR-F

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Augmented Cat. 6 ConnectionsThe New Standards


0

10

20

30

40

50

60

70

80

1 10 100 1000

Frequency (MHz)

dB

Aug. Cat.6 CH RL Aug. Cat.6 CH NEXT Aug. Cat.6 CH PSNEXTAug. Cat.6 CH ACR-F Aug. Cat.6 CH PSACR-F Aug. Cat.6 CH PSANEXTAug. Cat.6 CH PSAACR-F

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class EA LinkClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Ea PL RL Class Ea PL lL Class Ea PL NEXTClass Ea PL PSNEXT Class Ea PL ACR-F Class Ea PL PSACR-FClass Ea PL PSAACR-F

PSAACR-F 4-pair “average” = PSAACR-F+4 dB

PSANEXT 4-pair “average” = PSANEXT+2.5 dBDC loop resistance



RL informative for IL < 3.0 dBDelay

Delay skew488.1+32.4/√f ns (max)

45 ns (max)

Low IL relaxation

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Augmented Cat. 6 LinkClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Aug. Cat. 6 PL RL Aug. Cat. 6 PL lL Aug. Cat. 6 PL NEXTAug. Cat. 6 PL PSNEXT Aug. Cat. 6 PL ACR-F Aug. Cat. 6 PL PSACR-FAug. Cat. 6 PL PSAACR-F

PSAACR-F 4-pair “average” = PSAACR-F+4 dB

PSANEXT 4-pair “average” = PSANEXT+2.5 dB DC loop resistanceParameters not shown

Low IL relaxation



45 ns (max)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ



CHANNELS

Class EA is more stringent than Augmented Category 6

NEXT

ACR-FPSNEXT

CABLES

Augmented Category 6 = Category 6A

CONNECTIONS

PERMANENT LINKS

Class EA is more stringent than Augmented Category 6 FOR SOME PARAMETERS

NEXT

PSACR-F

PSNEXT

PSAACR-F

KNOW YOUR LIMITS

Category 6A is more stringent than Augmented Category 6 FOR SOME PARAMETERS

NEXTPSNEXT

Augmented Category 6 is more stringent than Class EA FOR SOME PARAMETERS

RL

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class FA - Impact on Cat. 7Class FA - Impact on Cat. 7

The hierarchical principleImplicit assumptions - screened solutionsLight and heavy screens - cable constructions


ChannelsComponents and permanent links

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ Category 7A Class FA

Class FCategory 7

Aug. Cat. 6Aug. Cat. 6 Class EACategory 6A

The Hierarchical PrincipleClass FA - Impact on Cat. 7


ANSI/TIA/EIA

ISO/IECCLCBSI

Components Links/channels Components Links/channels

Category 6

Category 5e

Category 3

Category 6

Category 5e

Category 3

Category 6

Category 5

Class E

Class D

Class C

Class B

Class A

FrequencyFrequencyFrequencyFrequency

Performance

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Implicit AssumptionsClass FA - Impact on Cat. 7


Class EA links/channels are a superset of Class EClass FA links/channels are a superset of Class EAClass FA links/channels are a superset of Class F

ISO/IECCLCBSI

Are Class F links/channels a superset of Class EA?

ALIEN CROSSTALK

Alien crosstalk requirements are applicable only to Classes EA and FA.

Alien crosstalk of Class F is considered to be as good as the alien crosstalk performance specified Class EA.

AXT (PSANEXT/PSAACR) is met by design if:• Class EA coupling attenuation is 10 dB better than Class requirement• Class F coupling attenuation is 10 dB better than Class requirement• Class FA coupling attenuation is 25 dB better than Class requirement

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Coupling Attenuation (CA)Class FA - Impact on Cat. 7


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class D Chnl Coupling Attenuation Class E Chnl Coupling AttenuationClass Ea Chnl Coupling Attenuation Class F Chnl Coupling AttenuationClass Fa Chnl Coupling Attenuation

Cable CA -Type III: Heavily screened

Cable CA -Type I: Unscreened

Cable CA -Type II: Basic screened

Base + 10 dB

Base + 25 dB

Screened cabling almost automatically provides required AXT

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Cable ConstructionsClass FA - Impact on Cat. 7


ISO/IEC 11801:2002 CLC TR 50173-1:2008A.1X X / X X X

ACRONYM

U/UTP

F/UTP

S/FTP

U/FTP

SF/UTP

Typical CA: Type I

Typical CA: Type II

Typical CA: Type III

Typical CA: Type II

Typical CA: Type III

OVERALL SCREEN

F = Foil screenedS = Braid screened

SF = Braid and foil screened

CABLE ELEMENTTP = Twisted pair

Q = Quad

ELEMENT SCREENU = Unscreened

F = Foil screened

U = Unscreened

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class F ChannelsThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class F Chnl RL Class F Chnl lL Class F Chnl NEXTClass F Chnl PSNEXT Class F Chnl ACR-F Class F Chnl PSACR-F





Operating voltage


Current capacity



DelayDelay skew

544+36/√f ns (max)50 ns (max)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class FA ChannelsThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Fa Chnl RL Class Fa Chnl lL Class Fa Chnl NEXTClass Fa Chnl PSNEXT Class Fa Chnl ACR-F Class Fa Chnl PSACR-F




DelayDelay skew

544+36/√f ns (max)50 ns (max)



Operating voltage


Current capacity


PSANEXT, PSAACR-F

ACR-N, PSACR-N

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class FA Channel PSANEXTClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Fa Chnl PSANEXT

IL = 35.9 dB = ~100 m

IL = 20.3 dB = ~55 m

IL ≤ 6.3 dB

10GBASE-T

10GBASE-T

10GBASE-T

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class FA Channel PSAACR-FClass EA - Augmented Cat. 6


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Fa Chnl PSAACR-F

IL = 35.9 dB = ~100 m

IL = 20.3 dB = ~55 mIL ≤ 10 dB

10GBASE-T

10GBASE-T

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class FA LinksThe New Standards


0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Fa PL RL Class Fa PL lL Class Fa PL NEXTClass Fa PL PSNEXT Class Fa PL ACR-F Class Fa PL PSACR-FClass Fa PL PSANEXT Class Fa PL PSAACR-F




DC loop resistance


DelayDelay skew

488.1+32.4/√f ns (max)45 ns (max)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ



Augmented Category 6 is the

pinnacle of performance

ANSI/TIA/EIA

ISO/IECCLCBSI

Class EA/Category 6A is an

interloper

1997 Concepts

Class E/Category 6“state of the art”

forunscreened cabling

(also achievable by screened cabling)

Class F/Category 7“state of the art”

forscreened cabling

Class F/Category 7 is screened (implicit)

Class FA/Category 7A is screened (logic)

Coupling attenuation “measures” screening performance

2007 Concepts

Alien crosstalk ~ Coupling attenuation

Class E/Category 6 is not “state of the art”for unscreened cabling

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Lunch

Category 7A

CLC TR 50173-99-1

ISO/IEC TR 24750

TIA/EIA-TSB-155

ISO/IEC 11801 A1.1

ISO/IEC 11801 A1.2

Class EA

Class FA

Category 6A

TIA/EIA-568-B.2-10

AugmentedCategory 6

ISO/IEC 11801


A Tangled Web



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Conformance TestingConformance Testing

What should be tested?IEC 61935-1 Ed.2 (Level IV test equipment)Testing solutions - IEC 61935-1 Ed.2 IEC 61935-1 Ed.3 (Level IIIe test equipment)


Alien crosstalkTesting solutions - IEC 61935-1 Ed.3

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

What should be tested?Conformance Testing


1 Not present in 568-B series

Category 6 /Class E cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

1 MHz - 250 MHz

Class F cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

1 MHz - 600 MHz

PS ANEXT (worst)PS ANEXT (average)PS AACR-F (worst)PS AACR-F (average)

Augmented Category 6 /Class EA cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

1 MHz - 500 MHz

Class FA cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

1 MHz - 1000 MHz



Grey area for

Class F

Greyer area for

Class FA

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

IEC 61935-1 Ed.2Conformance Testing


61935-1 Ed.2(2005)

Generic cabling systems - Specification for thetesting of balanced communication cabling inaccordance with ISO/IEC 11801Part 1: Installed cabling

EN 50346 Information technology - Testing of installed cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

Level III Test Equipment

1 MHz - 250 MHzInsertion lossReturn lossNEXT

DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

Level IV Test Equipment

1 MHz - 600 MHz


IEC/EN

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Testing to IEC 61935-1: Ed.2Conformance Testing


TYPICAL TEST SOLUTIONS


• DTX-1800• DTX-TERA to test Siemon TERA Class F systems

• TERA Permanent Link Adapters (2)• DTX-PLA011

• TERA Channel Adapters (2)• DTX-CHA011


• IEC 60603-7-7 via NEXANS test interfaces

• DTX-1800• Cat 6/Class E Permanent Link Adapters (2) with PM

• DTX-PLA001S• Cat 6/Class E Channel Adapters (2)

• DTX-CHA001


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class F Test ResultsConformance Testing


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

IEC 61935-1 Ed.3Conformance Testing


61935-1 Ed.3(2008)


EN 50346 Information technology - Testing of installed cabling


DC loop resistance1


PSNEXTACR-F

ACR-N1PS ACR-F

PS ACR-N1

Level IIIe TestEquipment

1 MHz - 500 MHz



600 MHz - 1000 MHz


No added requirements

IEC/EN

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Testing Solutions - IConformance Testing


• DTX-1800• Cat 6/Class E Permanent Link Adapters (2) with PM

• DTX-PLA001S• Cat 6/Class E Channel Adapters (2)

• DTX-CHA001



“Level IIIe” Test Equipment

• DTX-1800• DTX-10GKIT Alien Crosstalk Analyzer Kit

• DTX-AXTLK1 Communication Modules (2)• Augmented Cat 6/Class EA Permanent Link Adapters (2)

• DTX-PLA002S• Channel Adapters for Alien Crosstalk measurement (2)

• DTX-CHA001AS

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

AXT TestingConformance Testing


ALIEN CROSSTALK TESTING

CABLESMethod in development

4-round-1 on a drum probable

CONNECTIONSMethod in development

Only valid for specified closures

INSTALLATIONS

• sample basis only• investigation and assessment required

• to determine worst case port selection• margin to be allocated to reflect sampling procedure• interactive measurement and mitigation may be required

61935-1 Ed.3(2008)

IEC/EN

COMPONENTS

60512-25-9IEC/EN

IEC 61156-5/-6

EN 50288-10-Y

1% or 5 (whichever is the greater) oflongest channels PLUS medium PLUS shortest channels

3% or 15 (whichever is the greater)

3 test per sample

9% or 45 (whichever is the greater)

5 dB margin applied

Latest draftTC46/217A/CDV

To be applied for each cable/connection type

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

AXT TestingConformance Testing


New photo required

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Testing Solutions - IIConformance Testing



“Level IIIE” Test Equipment

• DTX-1800• DTX-10GKIT Alien Crosstalk Analyzer Kit

• DTX-AXTLK1 Communication Modules (2)• Augmented Cat 6/Class EA Permanent Link Adapters (2)

• DTX-PLA002S• Channel Adapters for Alien Crosstalk measurement (2)

• DTX-CHA001AS

“Level IIIe” Test Equipment w/o AXT measurement

• DTX-1800• Augmented Cat 6/Class EA Permanent Link Adapters (2)

• DTX-PLA002S• Channel Adapters (2)

• DTX-CHA001AS

where AXT testing is not required• if CA meets enhanced requirements• if supplier “guarantees” solution

Applicable?

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Testing Solutions - IIIConformance Testing


Level III Test Equipment w/o AXT measurement

• DTX-1800• Cat 6/Class E Permanent Link Adapters (2)

• DTX-PLA001S• Channel Adapters (2)

• DTX-CHA001

• Version 2.04 DTX Software. V1.24 limits

Not preferred but defined by some suppliers of “enhanced” cabling systemsSome installers “wish” to defer upgrade to new PLA/CHA units

Absence of accuracy requirement in current drafts of IEC 61935-1 do not prevent it

4th FPDAM

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Measurement ErrorsMeasurement Errors

Worst-case errors


IEC 61935-1 Ed.2 (Level IV test equipment) IEC 61935-1 Ed.3 (Level IIIe test equipment)

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Worst Case ErrorsMeasurement Errors


ForewordSCOPENormative ReferencesDefinitionsREFERENCE MEASUREMENT PROCEDURES FOR ELECTRICAL PROPERTIES

Data reporting and accuracyFIELD TESTER MEASUREMENT ACCURACY REQUIREMENTS

Uncertainty and variability of field test results (informative)

FIELD TEST MEASUREMENT PROCEDURES FOR ELECTRICAL PROPERTIES

Reference laboratory test configuration for alien crosstalk testing

ANNEX (informative)

ANNEX (normative)IEC 61935-1: Ed.3 (2008)

IEC 61935-1: Ed.2 (2005)

61935-1 Ed.3(2008)


IEC/EN

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Worst Case Errors

Measurement accuracy requirements

00.5

11.5

22.5

3

100 250 500 600

MHz

Inse

rtion

loss

(dB

)

Type IIeType IIIType IIIeType IV


012345

100 250 500 600

MHz

Ret

urn

loss

(dB) Type IIe

Type IIIType IIIeType IV


012345

100 250 500 600

MHz

NEXT

(dB) Type IIe

Type IIIType IIIeType IV


0123456

100 250 500 600

MHz

ELFE

XT/A

CR-

F (d

B)

Type IIeType IIIType IIIeType IV

Measurement Errors


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Class EA PL Error Model

0

10

20

30

40

50

60

70

1 10 100 1000

Frequency (MHz)

dB

Class Ea PL RL Class Ea PL lL Class Ea PL NEXTClass Ea PL ACR-F Class Ea PL PSAACR-F

DC loop resistance


ACR-N, PSACR-N




45 ns (max)

PSACR-F

PSNEXT

Measurement Errors


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Application of “Nominal” Accuracy

Fail result Pass result

Test result limit(requirement)

Worst case measurement accuracy

Marginal result(worst case)

xx xx xx xxxxx xxxx xxxx xxxx xxxx xxx xxxx xxx xxx

Test system “A”nominal accuracy

Test system “B”nominal accuracy

Nominally compliant testresult spread

Fail result Pass resultTest system “B”marginal result

Fail result Pass resultTest system “A”marginal result

Measurement Errors


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Margin DenialMeasurement Errors


xx xx xx xxxxx xxxx xxxx xxxx xxxx xxx xxxx xxx xxx

Test system “A”measurement accuracy

Test system “B”measurement accuracy

Super-compliant test resultspread

Pass result

Originaltest result limit(requirement)

Marginal result(worst case)

Pass resultTest system “B”marginal result

Pass resultTest system “A”marginal result

Test system “B” result limit (no marginal results)

Worst case result limit (no marginal results)

Test system “A” result limit (no marginal results)

Failresult

Failresult

Fail result

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Break

Category 7A

CLC TR 50173-99-1

ISO/IEC TR 24750

TIA/EIA-TSB-155

ISO/IEC 11801 A1.1

ISO/IEC 11801 A1.2

Class EA

Class FA

Category 6A

TIA/EIA-568-B.2-10

AugmentedCategory 6

ISO/IEC 11801


A Tangled Web



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Installation IssuesBusiness Issues

Component/system selection

Closures (panels and faceplates)Cabinet layoutsBundling


Screening, earthing and bondingManufacturers instructions

Mitigation techniquesLink design

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Component SelectionBusiness Issues


CABLES CONNECTING HARDWARE

No standards ratifiedNo test methods for AXT ratified

ANSI/TIA/EIA

568-B.2-10

ISO/IEC

11801Ed.2A1.2

2nd PDAM underwayDeadline: 02/08

Draft 10Circulated 17/12/07

IEC

61156-5/-6

EN

50173-1 A.1

EN

50288-10-Y

IEC

60603-7-41

EN

50173-1 A.1

EN

Augmented Category 6 Category 6A, 7A

US standards expected soonest• no material differences to ISO/IEC, CLC, BS

Augmented Category 6 Category 6A, 7A

ANSI/TIA/EIA

568-B.2-10

ISO/IEC

11801Ed.2A1.2

2nd PDAM underwayDeadline: 02/08


60603-7-5160603-7-71

61076-3-104

Unscreened Category 6AScreened Category 6AScreened Category 7A

Tera Category 7A

No standards ratifiedNo test methods for AXT ratifiedNo test plug definitionUS standards expected soonest• different to ISOIEC, EN, BS

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

System SelectionBusiness Issues


CHANNEL-BASED SYSTEMS

ANSI/TIA/EIA

568-B.2-10

ISO/IEC

11801Ed.2A1.1

Augmented Category 6 Class EA, Class FA

No standards ratifiedNo test methods for AXT ratified

US standards different to ISOIEC, EN, BS

WHAT IS BEING GUARANTEED?

ON WHAT BASIS IS THE GUARANTEE BEING GIVEN?

AXT GUARANTEE BASED UPON SCREENING?What screening performance is assumed?

Coupling attenuation?

EXTENDED FREQUENCY PERFORMANCE?

AXT PERFORMANCE?What laboratory tests?What installation tests?

1st FDAM underwayDeadline: 02/08


CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Mitigation TechniquesBusiness Issues


• the number of connections involving connecting hardware with high coupling;• including screened connectors that are not individually screened;

• screened connecting hardware with poor transfer impedance;• the performance, length and dressing of “equipment” cords.

PROCESSES TO IMPROVE SPECIFIC ANEXT FAILURES

SOURCES OF SPECIFIC ANEXT FAILURES


• screened connecting hardware with poor transfer impedance;• the performance, length and dressing of the entire channel;• the mixture of short and long channels.

SOURCES OF SPECIFIC AACR-F FAILURES

PROCESSES TO IMPROVE SPECIFIC AACR-F FAILURES

Reduce the number of connections in the channel

Unbundle and randomise cords

Unbundle and randomise the installed cables at appropriate ends

Utilise cords sufficiently specified to mitigate the alien crosstalk coupling

Increase separation distance between interfaces at each locationUtilise longer cords (within channel limits)

Increase the distance between cords at each location

Segregate long and short channels







CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Link DesignBusiness Issues


SOURCES OF SPECIFIC ANEXT/AACR-F FAILURES

PROCESSES TO IMPROVE ANEXT/AACR-F FAILURES








Promote the use of non-CP permanent links


• screened connecting hardware with poor transfer impedance;• the performance, length and dressing of “equipment” cords;• the performance, length and dressing of the entire channel;• the mixture of short and long channels.

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Closures (Panels and Faceplates)Business Issues





CONNECTIONSMethod in development

Only valid for specified closures60512-25-9IEC/

EN









The supplier defines the immediate AXT environment Do not be tempted to use products in “custom designed” closures.

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Cabinet LayoutsBusiness Issues











Consider well-spaced panels (the use of cord management panels)

Analyse lengths in advance of installation: create “common length” panels

Although this reduces the interface “real estate” within a cabinet it enables:• unbundling and randomising of cords;• improved cord separation;• the use of longer cords;• interface separation;



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

BundlingBusiness Issues











Limit size of cable bundles to 8 or 12 (depending on panel design)

Randomise bundle construction as much as possible

These are also good approaches to take in view of PoEPlus



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Screening, Earthing And BondingBusiness Issues



MEASURES OF SCREENING PERFORMANCE

Transfer impedanceCoupling attenuation

Screening effectivenessALL LABORATORY MEASUREMENTS

Take great care of screen termination and bonding practices

Rework prohibitively expensive

Take note and implement earthing system requirements



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Manufacturers’ InstructionsBusiness Issues


EN 50173-4 Ed.1 (2007)

EN 50173-3 Ed.1 (2007)

EN 50173-2 Ed.1 (2007)

EN 50173-5 Ed.1 (2007)

BS 6701:2004

ADDITIONALUK-SPECIFIC

CONFORMANCEREQUIREMENT

BS EN 50173-4 Ed.1

BS EN 50173-3 Ed.1

BS EN 50173-2 Ed.1

BS EN 50173-5 Ed.1

BS 7671

BS EN 50174series

• parameters to be measured• sampling levels to be applied• marginal results

ADMINISTRATION

INSTALLATION

QUALITY ASSURANCEPart 2: Installation planning and practices inside buildings

Part 1: Specification and Quality Assurance

Part 3: Installation planning and practices outside buildings

EN 50174 series

Information technology - Cabling installation

In toto

mandates application of manufacturers’ instructions

mandates application of manufacturers’ instructions

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Commercial IssuesBusiness Issues

Hidden costsPhotographic records

Administration systemsWho bears responsibility for broken promises


Pre-standard components Performance “by design”

Application support issues

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Hidden CostsBusiness Issues


PREPARATION

IMPLEMENTATION

COMMISSIONING

DOCUMENTATION

RISK

Discussion with client re- cabinet sizing

Cabling length analysis

Identification of suppliers’ guarantee provisions and requirements

Impact of cabinet sizing

Impact of randomisation of bundles

Impact of termination controls

Impact of testing

Photographic records

Administration

Discussion with client re- pathway sizing

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Photographic RecordsBusiness Issues











Document initial condition of front and rear of cabinets/frames/rack etc.

Document initial condition of sub-floor/super ceiling pathways



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Administration SystemsBusiness Issues











Use administration records to indicate initial configurations



CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

ResponsibilitiesBusiness Issues


BASIS OF REQUIREMENT

COMPONENTS

LINKS

CHANNELS

OPEN MARKET“CUSTOMER”

SPECIFIED SUPPLIER

1 4

2 5

3 6

1 Installer accepts risk of changes and incompatibilityor seeks absolutionPre-standard components

2 Installer accepts risk of change, defines channel rulesor seeks absolutionPre-standard links

3 Installer accepts risk of changeor seeks absolutionPre-standard channels

4 Supplier(s) accept risk of changes and incompatibilityPre-standard components

5 Supplier accepts risk of change and defines channel rulesPre-standard links

6 Supplier accepts risk of changePre-standard channels

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Pre-Standard ComponentsBusiness Issues


REMEMBER CATEGORY 6

Mated connectionCC Crossconnect panelPP Patch panel

PPCC Crossconnect channel implementationsPP

PP

Interconnect channel implementations

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Performance “by Design”Business Issues


REMEMBER CATEGORY 6

PP CP

PP CP TOCC

Equipment cord Patch cord Work area cord

PP CP TO

CP cord

PP CP TOCC

Equipment cord Patch cord Work area cord

INSTALLATIONPHASE 1

INSTALLATIONPHASE 2

MOVE ANDCHANGE

CHANNELBUILD 1

CP cord

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ

Application SupportBusiness Issues


ALIEN CROSSTALK WILL BECOME A “BOGEYMAN”

APPLICATION FAILURES WILL BE BLAMED ON AXT

Not just 10GBASE-T

AXT TESTING WILL BE MORE FREQUENTLY APPLIED

MITIGATION WILL BE REQUIRED TO RESOLVE USER ISSUES

External noise sources

SCREENED CABLING MITIGATIONTECHNIQUES

UNSCREENED CABLING MITIGATIONTECHNIQUES

MITIGATION TECHNIQUES





Unbundle and randomise the installed cables

Increase separation distance betweeninterfaces at each location

Utilise longer cords

Utilise individually screened connectinghardware or select channels under

individual screens

CONTENTS

The New Standards

Business Issues



Compliance Claims

Current Status


Commercial

Installation



Conformance Testing

Measurement Errors

ϕ The End

Category 7A

CLC TR 50173-99-1

ISO/IEC TR 24750

TIA/EIA-TSB-155

ISO/IEC 11801 A1.1

ISO/IEC 11801 A1.2

Class EA

Class FA

Category 6A

TIA/EIA-568-B.2-10

AugmentedCategory 6

ISO/IEC 11801


a tia/eia-tsb-155 current status category 7a performance ...ieee 802.3an:2006 clause 55.7 link...

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