Cabling Standard - TIA 568 B.2 - Addendum 10 - Draft 2.0

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02/04/05
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SP-3-4426-AD10 to be published as TIA-568-B.2-1

Draft 2.0

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NOTICE
{TIA staff to insert applicable text here.}


PN-3-4426-AD10, draft 2.0 (to be published as TIA/EIA-568-B.2-10)

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TRANSMISSION PERFORMANCE SPECIFICATIONS
FOR
4-PAIR 100 Ω AUGMENTED CATEGORY 6 CABLING
TABLE OF CONTENTS
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INTRODUCTION.....................................................................................................................1
PURPOSE AND SCOPE.........................................................................................................1
NORMATIVE REFERENCES .................................................................................................2
DEFINITIONS, ACRONYMS & ABBREVIATIONS .................................................................2
4.1
Definitions ......................................................................................................................... 2

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Acronyms and abbreviations............................................................................................. 3
4.2
5 TEST CONFIGURATIONS......................................................................................................3
5.1
Component test configurations ......................................................................................... 3

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5.2
Cabling test configurations................................................................................................ 3
6 COMPONENTS.......................................................................................................................4
6.1
Recognized cable ............................................................................................................. 4
6.1.1
Horizontal cable ........................................................................................................ 4
6.1.2
Cable for cords.......................................................................................................... 4
6.1.3
Backbone cable ........................................................................................................ 5
6.1.4
Bundled and hybrid cable ......................................................................................... 5
6.2
Recognized connecting hardware .................................................................................... 5

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6.3
Cords................................................................................................................................. 5
TRANSMISSION REQUIREMENTS.......................................................................................6
7.1
Insertion loss ..................................................................................................................... 6
7.1.1
Cable insertion loss ................................................................................................... 6
7.1.2
Connecting hardware insertion loss .......................................................................... 7
7.1.3

Cabling insertion loss................................................................................................. 8
7.1.3.1
Channel insertion loss ........................................................................................ 8
7.1.3.2
Permanent link insertion loss ............................................................................. 9
7.2
NEXT loss ....................................................................................................................... 10
Pair-to-pair NEXT loss ............................................................................................. 10
7.2.1
7.2.1.1
Cable pair-to-pair NEXT loss............................................................................ 10
Connecting hardware pair-to-pair NEXT loss................................................... 11
7.2.1.2
7.2.1.3
Work area, equipment, and patch cord pair-to-pair NEXT loss ....................... 12
7.2.1.4
Channel pair-to-pair NEXT loss........................................................................ 14
Permanent link pair-to-pair NEXT loss ............................................................. 15
7.2.1.5
7.2.2
Power sum NEXT loss............................................................................................. 16
7.2.2.1
Cable power sum NEXT loss ........................................................................... 16
7.2.2.2
Channel power sum NEXT loss ....................................................................... 17
Permanent link power sum NEXT loss............................................................. 18
7.2.2.3
7.3
ELFEXT and FEXT loss .................................................................................................. 19
7.3.1

Pair-to-pair ELFEXT ................................................................................................ 19
7.3.1.1
Cable pair-to-pair ELFEXT ............................................................................... 19
Connecting hardware pair-to-pair FEXT loss ................................................... 20
7.3.1.2
7.3.1.3
Channel pair-to-pair ELFEXT ........................................................................... 21
7.3.1.4
Permanent link pair-to-pair ELFEXT ................................................................ 22
Power sum ELFEXT ................................................................................................ 23
7.3.2

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7.3.2.1
Cable power sum ELFEXT ............................................................................... 23
Channel power sum ELFEXT ........................................................................... 24
7.3.2.2

7.3.2.3
Permanent link power sum ELFEXT ................................................................ 25
7.4
Return loss ...................................................................................................................... 26
7.4.1
Horizontal cable return loss ..................................................................................... 26
7.4.2
Stranded conductor cable return loss...................................................................... 27
7.4.3
Connecting hardware return loss............................................................................. 28
Work area, equipment, and patch cord return loss ................................................. 29
7.4.4
7.4.5
Cabling return loss................................................................................................... 30
7.4.5.1
Channel return loss .......................................................................................... 30
7.4.5.2
Permanent link return loss................................................................................ 31
7.5
Propagation delay/delay skew ........................................................................................ 32
7.5.1
Cable propagation delay.......................................................................................... 32
7.5.2
Cabling propagation delay ....................................................................................... 32
7.5.3
Cable propagation delay skew ................................................................................ 32
7.5.4
Cabling propagation delay skew.............................................................................. 33
7.6
Balance ........................................................................................................................... 33

7.6.1
Transverse conversion loss (TCL)........................................................................... 33
7.6.1.1
Cable TCL......................................................................................................... 33
7.6.1.2
Connecting hardware TCL ............................................................................... 34
7.6.2
Equal Level transverse conversion transfer loss (ELTCTL) .................................... 34
7.6.2.1
Cable ELTCTL .................................................................................................. 35
7.6.2.2
Connecting hardware TCTL ............................................................................. 36
7.7
ANEXT loss and PSANEXT loss .................................................................................... 36
7.7.1
Cable PSANEXT loss .............................................................................................. 36
7.7.2
Connecting hardware PSANEXT loss ..................................................................... 36
7.7.3
Channel PSANEXT loss .......................................................................................... 37
7.7.4
Permanent link PSANEXT loss................................................................................ 37
7.8
Average ANEXT loss and PSANEXT loss...................................................................... 38
7.8.1
Average channel PSANEXT loss............................................................................. 38
7.9
AFEXT loss, AELFEXT, and PSAELFEXT ..................................................................... 39
7.9.1
Cable PSAELFEXT.................................................................................................. 39

7.9.2
Connecting hardware PSAFEXT loss...................................................................... 39
7.9.3
Channel PSAELFEXT.............................................................................................. 39
Permanent Link PSAELFEXT.................................................................................. 40
7.9.4
7.10
Average AELFEXT and PSAELEXT loss...................................................................... 40
7.10.1 Channel PSAELFEXT.............................................................................................. 40
Annex A Cabling measurement requirements (normative) ..........................................................41
A.1 General ........................................................................................................................... 41

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A.2 Test setup and apparatus required................................................................................. 41
Annex B Cable ANEXT loss and AFEXT loss reference test procedure (normative) ..................43
B.1 Purpose........................................................................................................................... 43

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Equipment ....................................................................................................................... 43

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B.3

Procedure........................................................................................................................ 43

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B.4 Results ............................................................................................................................ 43
Annex C Connecting hardware ANEXT loss and AFEXT loss reference test procedure
(normative)....................................................................................................................................44
C.1 Purpose........................................................................................................................... 44

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C.2

Measurement procedure................................................................................................ 44

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C.3

Network analyzer and test fixture settings .................................................................... 44

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C.4

Measurement floor .......................................................................................................... 44

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C.5

DUT setup for ANEXT loss and AFEXT loss measurement........................................... 44

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C.6

Region of influence ......................................................................................................... 46

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C.7 Power sum ANEXT loss and AFEXT loss calculation .................................................... 46
Annex D Channel ANEXT loss and AFEXT loss laboratory measurement procedures (normative)
......................................................................................................................................................47
D.1 General ........................................................................................................................... 47

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Termination of pairs ........................................................................................................ 47

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Channel construction ...................................................................................................... 47

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D.4

Determining number of disturbing components .............................................................. 48

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D.5

Determining significance................................................................................................. 48

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Victim and disturbing channel configuration ................................................................... 48

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D.7 Channel ANEXT loss and AFEXT loss measurements and computations .................... 49
Annex E Field measurement method for alien crosstalk (normative) ..........................................50
E.1 General ........................................................................................................................... 50

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Frequency range ............................................................................................................. 50

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E.3

Test parameters .............................................................................................................. 50

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E.4

Test configurations.......................................................................................................... 50

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E.5 Test equipment for measuring alien crosstalk in installed cabling ................................. 50
E.5.1
Channel testing ........................................................................................................ 50
E.5.2
Permanent link testing ............................................................................................. 51
E.5.3
Measurement floor of the test device and patch/test cord PSANEXT loss ............. 51
E.5.4
Measurement floor of the test device for the channel test configuration................. 51
E.5.5
Measurement floor of the test device with permanent link adapter test cords ........ 52
E.6 Alien Crosstalk measurements ....................................................................................... 52
Measuring PSANEXT loss in the channel configuration ......................................... 52
E.6.1
E.6.2
Measuring PSAFEXT loss in the channel configuration.......................................... 53
E.7 Processing measurement data ....................................................................................... 55

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E.8 Power sum alien crosstalk test strategy ......................................................................... 56
E.8.1

General guidelines for power sum alien crosstalk testing ....................................... 56
Annex F Modeling configurations (informative)............................................................................57
F.1
General ........................................................................................................................... 57
Annex G Modular plug cord test procedure (normative) ..............................................................58
G.1 General ........................................................................................................................... 58

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Network analyzer test configuration................................................................................ 58

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Augmented category 6 modular plug cord test procedure.............................................. 59

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G.4 Augmented category 6 modular plug cord test head requirements................................ 59
G.4.1
Augmented category 6 modular cord test head NEXT loss .................................... 59
Augmented category 6 modular cord test head FEXT loss..................................... 60
G.4.2

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G.4.3
Augmented cCategory 6 modular cord test head return loss .................................. 60
Annex H Connecting hardware NEXT loss, FEXT loss, return loss, and insertion loss
measurement procedures (normative) .........................................................................................61
H.1 General ........................................................................................................................... 61

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H.2 Test setup and apparatus ............................................................................................... 61
H.2.1
Test balun characteristics ........................................................................................ 61
H.2.2
Impedance matching terminations........................................................................... 61
Test fixture common mode impedance match ................................................. 61
H.2.2.1
H.2.2.2
Balun terminations............................................................................................ 61
H.2.2.3
Resistor terminations........................................................................................ 61
H.3 Modular outlet test considerations .................................................................................. 62
H.3.1
Test plug construction.............................................................................................. 62
H.3.2
Test plug qualification .............................................................................................. 62
NEXT loss, FEXT loss and return loss test plug qualification procedure......... 62
H.3.2.1
H.3.3
Plug direct measurement fixture .............................................................................. 63
H.3.4

Connecting hardware NEXT loss testing................................................................. 63
H.3.5
Procedure for terminating a test plug to direct measurement test head ................. 64
H.3.6
Augmented category 6 modular test plug NEXT loss requirements ....................... 65
H.3.7
Augmented category 6 NEXT loss measurement reproducibility between labs ..... 67
H.4 Augmented category 6 Test plug FEXT loss .................................................................. 68
H.4.1
Augmented category 6 FEXT loss measurement reproducibility between labs...... 68
H.5 Test plug return loss testing............................................................................................ 69
H.5.1
Return loss test lead considerations........................................................................ 69
H.5.2
Test Plug Return loss requirements ........................................................................ 69
H.5.3
Test plug return Loss measurement procedure ...................................................... 69
H.5.4
Return loss lab-to-lab measurement accuracy........................................................ 69
Annex I Impedance controlled measurement fixture (normative) ................................................70
I.1
General ........................................................................................................................... 70

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I.3
Test fixture calibration procedure.................................................................................... 72
I.3.1
Open short and load calibration............................................................................... 72
I.3.2
Through calibration .................................................................................................. 73
Test lead return loss measurement using pyramid impedance management fixture..... 73
I.4
I.5
Termination of inactive pairs for FEXT loss measurement ......................................... 74
Direct measurement fixture detailed construction .......................................................... 74
I.6

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I.7

Test plug delay and port extension ................................................................................. 75

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I.8

Calibration and reference plane location ........................................................................ 75

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I.9

Network analyzer settings............................................................................................... 75

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I.10

Measurements ................................................................................................................ 76

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Alternative port extension procedure .............................................................................. 77

Additional components for connection to a network analyzer ........................................ 72

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LIST OF FIGURES
Figure 1 - Supplemental schematic representation of a channel test configuration ....................... 3
Figure 2 - Supplemental schematic representation of a permanent link test configuration ............ 4
Figure A.1 - Measurement configurations for test balun qualification ........................................... 42
Figure B.1 - Six-around-one cable test configuration.................................................................... 43
Figure C.1 - Connecting hardware ANEXT loss measurement setup .......................................... 45
Figure D.1 - Example of a “6 around 1” cable arrangement in a channel ....................... 48
Figure D.2 - Connector arrangement from an 8-port panel, in which 5 of the connectors are
significant disturbers............................................................................................................... 48
Figure E.1 - Schematic diagram of the measurement floor of the test device .............................. 51

Figure E.2 - Testing the measurement floor with permanent link adapters. ................................. 52
Figure E.3 - Schematic diagram to measure channel PSANEXT loss.......................................... 52
Figure E.4 - Schematic diagram for channel PSAFEXT measurement ........................................ 53
Figure E.5 - Measurement of the insertion loss of the victim cable and return path..................... 53
Figure E.6 - Alien FEXT loss measurement when separate measurement signaling path is
available ................................................................................................................................. 54
Figure E.7 - Example of extrapolating alien ELFEXT data when combined insertion loss of victim
link and signal feedback link causes alien FEXT measurements to reach the measurement
floor......................................................................................................................................... 54
Figure F.1 - Channel and permanent link test configurations ....................................................... 57
Figure G.1 - Network analyzer configuration................................................................................. 58
Figure H.1 - Plug direct measurement fixture ............................................................................... 63
Figure H.2 - Test plug/direct measurement fixture with impedance controlled test fixture ........... 64
Figure I.1 - Test head assembly THI3KIT with baluns attached ................................................... 70
Figure I.2 - Test head assembly showing foil tape applied to baluns and shielding (optional)
between baluns ...................................................................................................................... 72
Figure I.3 - Load calibration adapter arrangement........................................................................ 72
Figure I.4 - Through calibration ..................................................................................................... 73
Figure I.5 - Test setup for measurement of test lead return loss .................................................. 73
Figure I.6 - Exploded assembly of the coaxial termination reference test head ........................... 74
Figure I.7 - Detailed view of the coaxial termination reference test head interface ...................... 75
Figure I.8 - Example of coaxial test head shorting plug ................................................................ 77

LIST OF TABLES
Table 1- Matrix of backward compatible mated component performance ...................................... 1
Table 2 - Augmented category 6 cable insertion loss @ 20 °C ± 3°C (68° F ± 5.5 °F) .................. 6
Table 3 – Augmented category 6 connecting hardware insertion loss ........................................... 7
Table 4 – Augmented category 6 channel insertion loss ................................................................ 8
Table 5 – Augmented category 6 permanent link insertion loss ..................................................... 9
Table 6 - Augmented category 6 cable NEXT loss @ 20 °C ± 3 °C (68 °F ± 5.5° F), worst pair-topair.......................................................................................................................................... 10

Table 7 – Augmented category 6 connecting hardware NEXT loss, worst pair-to-pair ................ 11
Table 8 – Augmented category 6 connecting hardware NEXT loss, worst pair-to-pair ................ 11
Table 9 - Mated NEXT loss assigned to local and remote patch cord test adapter...................... 12
Table 10 - Example Augmented Category 6 modular plug cord NEXT loss limits, dB ................. 13
Table 11 – Augmented category 6 channel NEXT loss requirements, worst pair-to-pair............. 14
Table 12 – Augmented category 6 channel NEXT loss, worst pair-to-pair ................................... 14
Table 13 – Augmented category 6 channel NEXT loss, worst pair-to-pair (field measurements)
................................................................................................................................................ 15
Table 14 – Augmented category 6 permanent link NEXT loss requirements, worst pair-to pair .. 15
Table 15 – Augmented category 6 permanent link NEXT loss, worst pair-to pair ........................ 15
Table 16 - Augmented category 6 cable power sum NEXT loss @ 20 °C ± 3 °C (68 °F ± 5.5° F)16

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Table 17 – Augmented category 6 channel PSNEXT loss............................................................ 17
Table 18 – Augmented category 6 channel PSNEXT loss............................................................ 17
Table 19 – Augmented category 6 channel PSNEXT loss (field measurements) ........................ 18
Table 20 – Augmented category 6 permanent link power sum NEXT loss requirements ............ 18
Table 21 – Augmented category 6 permanent link power sum NEXT loss values ....................... 18
Table 22 – Augmented category 6 cable ELFEXT @ 20 °C ± 3 °C (68 °F ± 5.5 °F),
worst pair-to-pair .................................................................................................................... 19
Table 23 – Augmented category 6 connecting hardware FEXT loss, worst pair-to-pair .............. 20
Table 24 – Augmented category 6 channel ELFEXT, worst pair-to-pair....................................... 21
Table 25 – Augmented category 6 permanent link ELFEXT, worst pair-to-pair ........................... 22
Table 26 – Augmented category 6 permanent link ELFEXT, worst pair-to-pair values ................ 22
Table 27 - Augmented category 6 cable PSELFEXT @ 20 °C ± 3 °C (68 °F ± 5.5 °F) ................ 23
Table 28 – Augmented category 6 channel PSELFEXT ............................................................... 24
Table 29 – Augmented category 6 permanent link PSELFEXT requirements.............................. 25
Table 30 – Augmented category 6 permanent link power sum ELFEXT values .......................... 25
Table 31 - Augmented category 6 horizontal cable return loss @ 20°C ± 3°C (68° F ± 5.5° F), for
a length of 100 m (328 ft) ....................................................................................................... 26
Table 32 - Augmented category 6 solid conductor cable return loss at 20 °C ± 3 °C (68 °F ± 5.5
°F), for a length of 100 m (328 ft) ........................................................................................... 26
Table 33 - Augmented category 6 stranded conductor cable return loss requirements at 20 °C ± 3

°C (68 °F ± 5.5 °F), for a length of 100 m (328 ft) .................................................................. 27
Table 34 - Augmented category 6 stranded conductor cable return loss at 20 °C ± 3 °C (68 °F ±
5.5 °F),f or a length of 100 m (328 ft) ..................................................................................... 27
Table 35 – Augmented category 6 connecting hardware return loss ........................................... 28
Table 36 - Augmented category 6 connecting hardware return loss ............................................ 28
Table 37 - Augmented category 6 modular patch cord return loss ............................................... 29
Table 38 - Augmented category 6 work area, equipment, and patch cord return loss ................. 29
Table 39 – Augmented Category 6 channel return loss................................................................ 30
Table 40 – Augmented category 6 channel return loss................................................................. 30
Table 41 – Augmented category 6 permanent link return loss ..................................................... 31
Table 42 – Augmented category 6 permanent link return loss ..................................................... 31
Table 43 - Propagation delay and delay skew for augmented category 6 cable at 20 °C ± 3 °C
(68 °F ± 5.5 °F)....................................................................................................................... 32
Table 44 – Augmented category 6 cable TCL............................................................................... 33
Table 45 – Augmented category 6 connecting hardware TCL...................................................... 34
Table 46 – Augmented category 6 cable ELTCTL ........................................................................ 35
Table 47 – Augmented category 6 cable ELTCTL ........................................................................ 35
Table 48 – Augmented category 6 connecting hardware TCTL ................................................... 36
Table 49 – Augmented category 6 channel PSANEXT loss requirements at 20 °C ± 3 °C (68 °F ±
5.5 °F)..................................................................................................................................... 37
Table 50 – Augmented category 6 channel PSANEXT loss at 20 °C ± 3 °C (68 °F ± 5.5 °F) ...... 37
Table 51 – Augmented category 6 channel average PSANEXT loss requirements at 20 °C ± 3 °C
(68 °F ± 5.5 °F)....................................................................................................................... 38
Table 52 – Augmented category 6 channel average PSANEXT loss at 20 °C ± 3 °C
(68 °F ± 5.5 °F)....................................................................................................................... 38
Table 53 – Augmented category 6 channel PSAELFEXT at 20 °C ± 3 °C (68 °F ± 5.5 °F) ......... 39
Table 54 – Augmented category 6 channel average PSAELFEXT loss requirements at
20 °C ± 3 °C (68 °F ± 5.5 °F).................................................................................................. 40
Table 55 – Augmented category 6 channel average PSAELFEXT loss at 20 °C ± 3 °C
(68 °F ± 5.5 °F)....................................................................................................................... 40

Table A.1 - Test balun performance characteristics...................................................................... 41
Table G.1 - Augmented Category 6 modular cord test head return loss ...................................... 60
Table H.1 - Direct measurement fixture residual NEXT loss and return loss ............................... 63

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Table H.2 – Augmented category 6 de-embedded test plug NEXT loss limits ............................. 65
Table H.3 – Augmented Category 6 de-embedded test plug NEXT loss range ........................... 66
Table H.4 – Augmented category 6 FEXT loss ranges for category 6 NEXT loss test plugs....... 67
Table H.5 – Test plug NEXT loss measurement reproducibility between laboratories................. 67
Table H.6 – Augmented Category 6 test plug FEXT loss ranges ................................................. 68
Table H.7 – Test plug FEXT loss measurement reproducibility between laboratories ................. 68
Table I.1 - Test fixture kit ............................................................................................................... 71
Table I.2 - Test head assembly, NEXT-FEXT kit .......................................................................... 71
Table I.3 - Impedance controlled test fixture, detailed part list...................................................... 71
Table I.4 – Coaxial termination reference head component list.................................................... 74

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4
5
6
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8
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10
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23
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32
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34

FOREWORD

(This foreword is not part of the Standard)
In 2003, the Telecommunications Industry Association (TIA) developed objectives for augmented
category 6 cabling intended to support 10 Gigabit applications over a distance of 100 meters. At
the request of the Institute of Electrical and Electronics Engineers (IEEE) 802.3 Committee, TIA
agreed to specify augmented category 6 cabling systems and components to 500 MHz in order to
support 10GBASE-T. The project was assigned to TR-42.7 under Engineering Committee TR-42.
The TR-42.7 Sub-Committee cooperated with several groups related to this activity.
TIA standards documents are developed within the Technical Committees of the TIA and the
standards coordinating committees of the TIA standards board. Members of the committees
serve voluntarily and without commission. The companies that they represent are not
necessarily members of the TIA. The standards developed within the TIA represent a consensus
of the broad expertise on the subject. This expertise comes from within the TIA as well as those
outside of the TIA that have an expressed interest. The viewpoint expressed at the time that this
standard was approved was from the contributors’ experience and the state of the art at that time.
Users are encouraged to verify that they have the latest revision of the standard.
This standard has been prepared by the TR-42.7 Subcommittee and approved by the
Engineering Committee TR-42.
There are 9 annexes in this Standard. Annexes A, B, C, D, E, , G, H, and I are normative and

considered a mandatory part of this Standard. AnnexesF is informative and not considered a
part of this Standard.

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6/30/2005

INTRODUCTION

2
3
4
5
6
7
8
9
10
11
12
13
14
15

16
17
18
19
20
21
22
23
24
25
26

This Standard specifies requirements for insertion loss, near-end crosstalk (NEXT) loss, equal level
far-end crosstalk (ELFEXT), return loss, propagation delay, delay skew, alien near-end crosstalk
(PSANEXT), and alien far-end crosstalk (PSAELFEXT) requirements for 100 Ω 4-pair augmented
category 6 cabling, cables, and connecting hardware. This Standard also specifies near-end
crosstalk (NEXT) loss and return loss requirements for modular plug cords. For cabling and cable
NEXT loss and ELFEXT, both worst pair-to-pair and multi-disturber power sum requirements are
specified. Balance requirements are provided for augmented category 6 connecting hardware and
cables. In addition to these requirements and recommendations, augmented category 6 cabling,
cables, cords, and connecting hardware shall meet or exceed all the requirements of
ANSI/TIA/EIA-568-B.1, ANSI/TIA/EIA-568-B.2, and ANSI/TIA/EIA-568-B.2-1. Compliance with this
Standard does not imply compatibility with cabling having nominal impedance values other than
100 Ω.

27

Table 1- Matrix of backward compatible mated component performance

The requirements in this Standard are for 100 Ω augmented category 6 balanced twisted-pair

cabling systems and components. Augmented category 6 cabling provides higher performance
than category 6 and recognizes advances in cabling technology. Augmented category 6 shall be
backward compatible with categories 3, 5, 5e, and 6 as specified in ANSI/TIA/EIA-568-B.1,
ANSI/TIA/EIA-568-B.2, and ANSI/TIA/EIA-568-B.2-1. Applications running on the lower category
cabling shall be supported by augmented category 6. For augmented category 6, the 8-position
modular jack interface shall be maintained at the telecommunications outlet connector in the work
area. If different category components are to be mixed with augmented category 6 components,
then the combination shall meet the transmission requirements of the lower performing category.
See table 1 for a matrix of mated component performance representative of backward compatibility.
To ensure generic cabling system performance, component requirements are specified to support
interoperability when products from different manufacturers are mated.

Category of Modular Connecting Hardware Performance

Modular Plug &
Cord Performance

Category
31)

Category 5

Category 5e

Category 6

Augmented
Category 6

Category 3 1)

Category 3

Category 3

Category 3

Category 3

Category 3

Category 5

Category 3

Category 5

Category 5

Category 5

Category 5

Category 5e

Category 3

Category 5

Category 5e

Category 5e

Category 5e

Category 6

Category 3

Category 5

Category 5e

Category 6

Category 6

Augmented
Category 6

Category 3

Category 5

Category 5e

Category 6

Augmented
Category 6

1) Category 3 plug performance requirements are assumed to be less restrictive than
category 5e.
28
29
30

Testing according to the procedures of this standard is intended to ensure backward compatibility
with category 6.

31

2

32
33
34
35

To develop cabling and component specifications and test procedures to support the operation of
IEEE 802.3 10GBASE-T over 100 meters of structured balanced twisted-pair copper cabling. This
addendum includes extending the frequency range and adding requirements to those specified in
ANSI/TIA/EIA-568-B.2-1.

PURPOSE AND SCOPE

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1

3

NORMATIVE REFERENCES

2
3
4
5
6

The following standards contain requirements that, through reference in this text, constitute
provisions of this Standard. At the time of publication, the editions indicated were valid. All
standards are subject to revision; parties to agreements based on this Standard are encouraged to
investigate the possibility of applying the most recent editions of the standards indicated. ANSI and
TIA maintain registers of currently valid national standards published by them.

7

ANSI/ICEA S-80-576, Communications Wire and Cable for Wiring Premises, 1994

8
9

ANSI/ICEA S-90-661, Individually Unshielded Twisted Pair Indoor Cable for Use in Communication
Wiring Systems, 1994

10
11

ANSI/TIA/EIA-568-B.1, Commercial Building Telecommunications Standard Part 1: General
Requirements, 2001

12
13

ANSI/TIA/EIA-568-B.2, Commercial Building Telecommunications Standard Part 2: Balanced
Twisted-pair Cabling Components, 2001

14
15

ANSI/TIA/EIA-568-B.2-1, Commercial Building Telecommunications Standard Part 2: Addendum 1:
Transmission Performance Specifications for 4-Pair 100 Ohm category 6 cabling, 2002

16
17

ANSI/TIA/EIA-568-B.2-3, Additional Considerations for Insertion Loss and Return Loss Pass/Fail
Determination, 2002

18
19

ANSI/TIA/EIA-568-B.2-9, Additional Category 6 Balance Requirements and Measurement
Procedures, 2004

20
21

ANSI/TIA/EIA-568-B.3, Commercial Building Telecommunications Standard Part 3: Optical Fiber
Cabling Components, 2000

22
23

ASTM D 4566-98, Standard Test Methods for Electrical Performance Properties of Insulations and
Jackets for Telecommunications Wire and Cable, 1998

24
25
26

IEC 60603-7, Connectors for frequencies below 3 MHz for use with printed boards – Part 7: Detail
specification for connectors, 8-way, including fixed and free connectors with common mating
features, with assessed quality, 1996

27

4

28

4.1

29

30
31
32

The generic definitions in this section have been formulated for use by the entire family of
telecommunications infrastructure standards. As such, the definitions do not contain mandatory
requirements of the Standard. Specific requirements are found in the normative sections of this
Standard.

33
34

Alien crosstalk: Signal coupling from disturbing pairs into a disturbed pair of a neighboring
channel or part thereof.

35
36

Alien near-end crosstalk (ANEXT) loss: Signal coupling from near-end disturbing channel pairs
into a disturbed pair of a neighboring channel or part thereof, measured at the near-end.

37
38
39

Power sum alien near-end crosstalk (PSANEXT) loss: A computation of signal coupling from
multiple near-end disturbing channel pairs into a disturbed pair of a neighboring channel or part
thereof, measured at the near-end.

40

41

Alien far-end crosstalk (AFEXT) loss: Signal coupling from near-end disturbing channel pairs into
a disturbed pair of a neighboring channel or part thereof, measured at the far-end.

42
43
44

Power sum alien far-end crosstalk (PSAFEXT) loss: A computation of signal coupling from
multiple near-end disturbing channel pairs into a disturbed pair of a neighboring channel or part
thereof, measured at the far-end.

DEFINITIONS, ACRONYMS & ABBREVIATIONS
Definitions

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4.2

2
3
4
5
6

7

AFEXT
ANEXT
CM
DM
PSAFEXT
PSANEXT

8

5

9

5.1

6/30/2005

Acronyms and abbreviations
Alien far-end crosstalk
Alien near-end crosstalk
Common mode
Differential mode
Power sum alien far-end crosstalk
Power sum alien near-end crosstalk

TEST CONFIGURATIONS
Component test configurations

10
11

Cable and connecting hardware test configurations and procedures are specified in
ANSI/TIA/EIA-568-B.2 with the additional requirements specified within this Standard.

12

5.2

13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

33
34
35
36
37

The channel test configuration is described in ANSI/TIA/EIA-568-B.1. A supplemental schematic
representation of the channel test configuration is illustrated in figure 1.

38

Figure 1 - Supplemental schematic representation of a channel test configuration

Cabling test configurations

Channel under test
Work area
equipment

A

B
WA

D

C
C1

CP

E

Equipment
in TR

C2

Legend
Cables and cords
Work area cord ..................................A
Optional transition cabling .................B
Horizontal cabling ............................. C
Patch cord or jumper cable .............. D
Telecommunications room
equipment cord ...........................E

Connecting hardware
Telecommunications outlet/
connector ....................................WA
Optional transition/consolidation
point connector ............................CP
Horizontal cross-connect or
interconnect .......................... C1, C2

Maximum length
B + C.....................................90 m (295 ft)
A + D + E .............................10 m (32.8 ft)

39

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14
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18
19
20
21
22

23

The permanent link test configuration is defined in ANSI/TIA/EIA-568-B.1. A supplemental
schematic representation of the permanent link test configuration is illustrated in figure 2.

24

Figure 2 - Supplemental schematic representation of a permanent link test configuration

Permanent link
under test
Test
instrument

F

B
WA

C
CP

Legend

Cables and cords
Test equipment cord ......................... F
Optional transition cabling................. B
Horizontal cabling..............................C

F

Test
instrument

C1

Connecting hardware
Telecommunications outlet/
connector.................................... WA
Optional transition/consolidation
point connector............................ CP
Horizontal cross-connect or
interconnect................................. C1

Maximum length
B + C ....................................90 m (295 ft)

25

6

COMPONENTS

26

6.1

27
28
29

30
31

The following category of twisted-pair cable is recognized in addition to those identified in
clause 4.2.1 of ANSI/TIA/EIA-568-B.2:

32

6.1.1

33
34
35
36
37
38
39
40
41
42

Four-pair 100 Ω UTP and ScTP cables are recognized for use in augmented category 6 horizontal
cabling systems. The cable shall consist of 22 AWG to 24 AWG thermoplastic insulated solid
conductors that are formed into four individually twisted-pairs and enclosed by a thermoplastic
jacket. The cable shall meet all of the mechanical requirements of ANSI/ICEA S-80-576 applicable
to four-pair inside wiring cable for plenum or general cabling within a building. In addition to the
applicable requirements of ANSI/ICEA S-90-661-1994, the physical design of horizontal cables
shall meet the requirements of clauses 4.3.3.1 to 4.3.3.6 of ANSI/TIA/EIA-568-B.2.

43

6.1.2

44
45
46
47

Cable used for patch cords, equipment cords, and work area cords is critical to transmission
performance. Cable used for augmented Category 6 cords and cordage shall meet the applicable
requirements of clauses 6.1 through 6.3 of ANSI/TIA/EIA-568-B.2 and clause 7 this Standard.

Recognized cable

Augmented Category 6: This designation applies to 100 Ω cables whose transmission
characteristics are specified up to 500 MHz.
Horizontal cable

NOTE – Additional requirements for 100 Ω ScTP cables are located in annex K of
ANSI/TIA/EIA-568-B.2.
Cable for cords

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6.1.3

6/30/2005

Backbone cable

2
3
4
5
6
7
8
9
10
11

Four-pair 100 Ω UTP and ScTP cables are recognized for use in augmented category 6 backbone
cabling systems. The cable shall consist of 22 AWG to 24 AWG thermoplastic insulated solid
conductors that are formed into four individually twisted-pairs and enclosed by a thermoplastic
jacket. The cable shall meet all of the mechanical requirements of ANSI/ICEA S-80-576 applicable
to four-pair inside wiring cable for plenum or general cabling within a building. In addition to the
applicable requirements of ANSI/ICEA S-90-661-1994, the physical design of backbone cables
shall meet the requirements of clauses 4.4.3.1 to 4.4.3.6 of ANSI/TIA/EIA-568-B.2.

12

6.1.4

13
14

15
16
17
18
19
20
21
22
23
24
25
26
27

Bundled and hybrid cables may be used for horizontal and backbone cabling provided that each
cable type is recognized (see clause 6.1.1 of this Standard and clause 4.4 of
ANSI/TIA/EIA-568-B.1) and meets the transmission and color-code specifications for that cable
type as given in ANSI/TIA/EIA-568-B.2, ANSI/TIA/EIA-568-B.3, and clause 7 of this Standard.

28

6.2

29
30
31
32
33

The following category of twisted-pair connecting hardware is recognized in addition to those

identified in clause 5.4.1 of ANSI/TIA/EIA-568-B.2:

34

6.3

35
36
37
38
39

Patch cords, equipment cords, and work area cords used for system moves, adds, and changes
are critical to transmission performance. Augmented category 6 cords and cordage shall meet the
applicable requirements of clauses 6.1 through 6.3 of ANSI/TIA/EIA-568-B.2 and clause 7 of this
Standard.

NOTE – Additional requirements for 100 Ω ScTP cables are located in annex K of
ANSI/TIA/EIA-568-B.2.
Bundled and hybrid cable

NOTES,
1 Hybrid UTP cables (color coded per ANSI/TIA/EIA-568-B.2, clause 4.3.3.3) can be
distinguished from multipair UTP backbone cables (color coded per clause 4.4.3.3 of
ANSI/TIA/EIA-568-B.2) by the color coding scheme and by the transmission requirements.
2 Hybrid cables consisting of optical fiber and copper conductors are sometimes referred
to as composite cables.
The individual cables within a bundled cable shall meet the applicable requirements in clause 4 of
ANSI/TIA/EIA-568-B.3, clause 4 of ANSI/TIA/EIA-568-B.2, annex K of ANSI/TIA/EIA-568-B.2,
annex M of ANSI/TIA/EIA-568-B.2, and clause 7 of this Standard after bundle formation.

Recognized connecting hardware

Augmented Category 6: This designation applies to 100 Ω connecting hardware whose
transmission characteristics are specified from 1 MHz to 500 MHz.
Cords

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1

7

TRANSMISSION REQUIREMENTS

2

7.1

3

7.1.1

4
5
6

7
8

For all frequencies from 1 MHz to 500 MHz, augmented category 6 solid conductor cable insertion
loss shall meet the values determined using equation (1). Solid conductor cable insertion loss shall
be measured at 20 ± 3°C or corrected to a temperature of 20 °C using the correction factors
specified in this clause. The values in table 2 are provided for information only.

9

InsertionLoss cable,100 m ≤ 1.8 f + 0.01 f +

Insertion loss
Cable insertion loss

0.2

dB

f

(1)

10
11
12
13
14
15
16

17
18
19
20
21
22

Augmented category 6 solid conductor cable insertion loss shall also be verified at a temperature of
40 ± 3 °C and 60 ± 3 °C and shall meet the requirements of equation (1) after adjusting for
temperature. The maximum insertion loss for solid conductor UTP cables shall be adjusted at
elevated temperatures using a factor of 0.4 % increase per °C from 20 °C to 40 °C and 0.6%
increase per °C for temperatures from 40 °C to 60 °C. The maximum insertion loss for solid
conductor ScTP cables shall be adjusted at elevated temperatures using a factor of 0.2% increase
per °C from 20 °C to 60 °C.

23

InsertionLossstranded _ cable,100 m ≤ 1.2 ⋅ InsertionLosscable ,100 m dB

24
25
26

For all frequencies from 1 MHz to 500 MHz, augmented category 6 UTP and ScTP stranded
conductor cable insertion loss shall meet the values determined using equation (2). Stranded
conductor cable insertion loss shall be measured at 20 ± 3° C or corrected to a temperature of
20 °C using a 0.4 %/°C correction factor for the measured insertion loss.

Table 2 - Augmented category 6 cable insertion loss @ 20 °C ± 3°C (68° F ± 5.5 °F)
Frequency

(MHz)

Insertion loss
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

2.0
3.7
5.2
5.9
7.4
8.3
9.3
10.4
14.9

19.0
27.5
31.0
34.2
40.0
45.3

27
28

6

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6/30/2005

1

7.1.2

2
3
4
5
6

For all frequencies from 1 MHz to 500 MHz, augmented category 6 connecting hardware insertion

loss shall meet the values determined using equation (3). The values in table 3 are provided for
information only. Calculations that result in insertion loss values less than 0.1 dB shall revert to a
requirement of 0.1 dB maximum.

7

InsertionLoss conn ≤ 0.02 f dB

8
9
10

Connecting hardware insertion loss

(3)

Table 3 – Augmented category 6 connecting hardware insertion loss
Frequency
(MHz)

Insertion loss
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00

31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
0.2
0.3
0.3
0.3
0.4
0.4

11
12

7

6/30/2005

1

7.1.3

2

7.1.3.1

3
4
5
6
7
8
9
10

PN-3-4426-AD10, draft 2.0 (to be published asTIA/EIA-568-B.2-10)

Cabling insertion loss
Channel insertion loss

For all frequencies from 1 MHz to 500 MHz, when measured according to the procedures in
annex C of ANSI/TIA/EIA-568-B.2-1, the channel insertion loss shall meet the values determined
using equation (4). For the purposes of field measurements, calculated channel limits that result in
insertion loss values less than 3 dB revert to a requirement of 3 dB maximum (see
ANSI/TIA/EIA-568-B.2-3). Insertion loss values in table 4 computed from equation (4) are provided

for information.

InsertionLosschannel ≤ 1.05(1.8 f + 0.01 f + 0.2 /

f ) + 4 ⋅ 0.02 f dB

(4)

11
12
13
14

It is understood that equation (4) includes an ILD allowance. The ILD allowance is determined
using equation (5) for all frequencies from 1 MHz to 500 MHz:

15

ILDchannel ,100 m ≤ 0.03(1.8 f + 0.01 f +

16
17

0.2
f

)

(5)

Table 4 – Augmented category 6 channel insertion loss
Frequency
(MHz)
1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

18
19
20
21
22
23
24
25
26
27
28

29
30

Insertion loss
(dB)
2.2
4.1
5.7
6.4
8.1
9.1
10.2
11.4
16.3
20.8
30.0
33.8
37.3
43.6
49.3

NOTES,
1 The insertion loss of the channel does not take into consideration the 0.1 dB
measurement floor of the connecting hardware insertion loss requirement.
2 The permanent link insertion loss requirement is derived using the insertion loss
contribution of 3 connections.
2 The channel insertion loss requirement is derived using the insertion loss contribution
of 4 connections.
3 For the purposes of field measurements, calculated channel limits that result in
insertion loss values less than 3 dB revert to a requirement of 3 dB maximum (see

ANSI/TIA/EIA-568-B.2-3).

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1

7.1.3.2

2
3
4

For all frequencies from 1 MHz to 500 MHz, augmented category 6 permanent link insertion loss
shall meet the values determined using equation (9). The values in table 5 are provided for
information only.

5
6
7
8
9
10
11
12
13

14
15
16
17
18
19
20
21
22
23
24
25

Permanent link insertion loss

InsertionLoss perm _ link = ∑ InsertionLoss conn + ∑ InsertionLoss cable

+ ILD perm _ link dB
where:

InsertionLoss cable = 0.9 ⋅ InsertionLoss cable ,100 m dB, and

(7)

ILD perm _ link = 0.00015 f 1.5 dB (TBD)

(8)

NOTES,
1 The insertion loss of the permanent link does not take into consideration the 0.1 dB

measurement floor of the connecting hardware insertion loss requirement.
2 For the purposes of field measurements, calculated permanent link limits that result in
insertion loss values less than 3 dB revert to a requirement of 3 dB maximum (see
ANSI/TIA/EIA-568-B.2-3).

InsertionLoss perm _ link ≤ 1.68 f + 0.009 f +

0.18
f

+ 0.00015 f 1.5 dB (TBD)

Table 5 – Augmented category 6 permanent link insertion loss
Frequency
(MHz)

26

(6)

Insertion loss
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00

31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

1.9
3.5
4.9
5.5
6.9
7.7
8.7
9.7
13.9
17.9
26.0
29.4
32.6
38.4
43.8

27
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(9)


6/30/2005

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7.2

PN-3-4426-AD10, draft 2.0 (to be published asTIA/EIA-568-B.2-10)

NEXT loss

2
3
4
5
6
7
8
9
10
11
12

NEXT loss is a measure of the unwanted signal coupling from a transmitter at the near-end into
neighboring pairs measured at the near-end. NEXT loss is expressed in dB relative to the transmit
signal level. NEXT loss shall be measured for all pair combinations of cables and cabling in
accordance with annex C of ANSI/TIA/EIA-568-B.2 and the ASTM D 4566 NEXT loss
measurement procedure, except the test fixture shall provide for consistent common and

differential mode impedance matching for the unjacketed twisted-pairs between the cable jacket
and the balun terminations. Connecting hardware NEXT loss shall be measured for all pair
combinations in accordance with annex H. Modular plug cord NEXT loss shall be measured for all
pair combinations in accordance with annex G. In addition, since each duplex channel can be
disturbed by more than one duplex channel, power sum near-end crosstalk (PSNEXT) loss is also
specified for cabling and cables.

13

7.2.1

14

7.2.1.1

15
16
17
18
19

For all frequencies from 0.772 MHz to 500 MHz, augmented category 6 cable NEXT loss, for a
length of 100 m (328 ft) or longer, shall meet the values determined using equation (10). The
values in table 6 are provided for information only.

20
21
22
23

Pair-to-pair NEXT loss
Cable pair-to-pair NEXT loss

NEXTcable ≥ 44.3 − 15 log( f / 100) dB

(10)

Table 6 - Augmented category 6 cable NEXT loss @ 20 °C ± 3 °C (68 °F ± 5.5° F),
worst pair-to-pair
Frequency
(MHz)
0.150
0.772
1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

24

25
26

NEXT loss
(dB)
86.7
76.0
74.3
65.3
60.8
59.3
56.2
54.8
53.3
51.9
47.4
44.3
39.8
38.3
37.1
35.3
33.8

NOTE - 0.150 MHz is for reference purposes only.

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1

7.2.1.2

Connecting hardware pair-to-pair NEXT loss

2
3
4
5
6
7
8
9

For all frequencies from 1 MHz to 500 MHz, augmented category 6 connecting hardware NEXT
loss shall meet the values determined using the equations specified in table 7 when mated to the
range of test plugs specified in annex H.3.4. Calculations that result in NEXT loss values greater
than 75 dB shall revert to a requirement of 75 dB minimum. The values in table 8 are provided for
information only.
Table 7 – Augmented category 6 connecting hardware NEXT loss, worst pair-to-pair
Frequency
(MHz)
1 ≤ f < 250
250 ≤ f ≤ 500

10
11

12

NEXT loss
(dB)
54-20log(f/100) (TBD)
46.04-40log(f/250) (TBD)

Table 8 – Augmented category 6 connecting hardware NEXT loss, worst pair-to-pair
Frequency
(MHz)

NEXT loss
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

94.0 (TBD)
82.0 (TBD)
75.9 (TBD)
74.0 (TBD)
69.9 (TBD)
68.0 (TBD)
66.0 (TBD)
64.1 (TBD)
58.1 (TBD)
54.0 (TBD)
48.0 (TBD)
46.0 (TBD)
42.9 (TBD)
37.9 (TBD)
34.0 (TBD)

13
14

11


6/30/2005

PN-3-4426-AD10, draft 2.0 (to be published asTIA/EIA-568-B.2-10)

1

7.2.1.3

2
3
4
5

Work area, equipment, and patch cords shall pass the requirements of this clause. Modular plug
cords shall be measured in accordance with annex G. The measured NEXT loss of modular plug
cords shall exceed the values calculated in equation (11).

6

7

Work area, equipment, and patch cord pair-to-pair NEXT loss

(

− NEXT
+ 2 ⋅ IL
 − NEXTconnectors
cable
conn

10
10
10
NEXT
= −10 log
+ 10


cord _ limit


where:

(

8

) 

(11)

 − RFEXT




(

− NEXT
+ 2 ⋅ IL
+ IL
 − NEXTconn
conn
cable
conn

10
20

20
NEXT
= −20 log
+ 10
connectors



)) 





(12)

9

CableLength
100

10

IL
= DeRating ⋅ IL
⋅
cable
IL
cable,100m

11

− 0.46 ⋅ IL

cable
NEXT
= NEXT
− 10 log1 − e

cable
cable,100m


(13)






(14)

12
13
14

is the mated NEXT loss at 100 MHz assigned to the local and remote patch cord test
NEXT
conn
adapter, in dB as shown in table 9,

15

Table 9 - Mated NEXT loss assigned to local and remote patch cord test adapter
Frequency
(MHz)

NEXT loss
(dB)

1 ≤ f < 250
250 ≤ f ≤ 500

54-20log(f/100) (TBD)
46.04-40log(f/250) (TBD)

16
17
18
19
20
21
22
23
24
25
26
27

where:

f is the frequency in MHz, NEXT is in dB, and cable length is in meters.
is the insertion loss of 100 meters of solid conductor cable as specified in clause
IL
cable,100m
7.1.1.

Derating

IL

is the de-rating factor specified for stranded conductor cable in clause 7.1.1.

is the insertion loss of a compliant connector as specified in clause 7.1.2.
IL
conn

12


PN-3-4426-AD10, draft 2.0 (to be published as TIA/EIA-568-B.2-10)
1
2
3
4
5
6
7
8
9

10
11
12
13

6/30/2005

is the cable NEXT loss computed from the NEXT loss requirements for 100 m cable,
NEXT
cable
the insertion loss requirements for 100 m patch cable, the length correction formula in ASTM D
4566, and
is the NEXT loss test limit for 100 m cable as specified in clause 7.2.1.1.
NEXT
cable,100m

RFEXT is the allowance for reflected FEXT loss as described in equation (15).
RFEXT = 0.5 dB (TBD)

(15)

Calculations that result in NEXT loss limit values in excess of 65 dB shall revert to a limit of 65 dB.
The values in table 10 are provided for information only.
Table 10 - Example Augmented Category 6 modular plug cord NEXT loss limits, dB
Frequency
(MHz)

2 m cord limit
(dB)

5 m cord limit
(dB)

10 m cord limit
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00
14
15
16

1 m cord limit
(dB)
65.0
65.0
65.0

65.0
62.7
60.7
58.8
56.9
51.0
47.0
41.1
39.3
36.4
31.8
28.2

65.0
65.0
65.0
65.0
62.0
60.1
58.2
56.3
50.4
46.4
40.7
38.9
36.2
31.9
28.4

65.0

65.0
65.0
64.5
60.5
58.7
56.8
54.9
49.2
45.4
39.9
38.1
35.9
32.1
29.0

65.0
65.0
64.8
63.0
59.1
57.3
55.4
53.6
48.1
44.5
39.3
37.7
35.8
32.5
29.8

Editor’s Note: The values in the above table are TBD

13


6/30/2005

PN-3-4426-AD10, draft 2.0 (to be published asTIA/EIA-568-B.2-10)

1

7.2.1.4

Channel pair-to-pair NEXT loss

2
3
4
5
6

For all frequencies from 1 MHz to 500 MHz, augmented category 6 channel pair-to-pair NEXT loss
shall meet the values determined using the equations in table 11. Calculations that result in NEXT
loss values greater than 65 dB shall revert to a requirement of 65 dB minimum. The values in
table 12 are provided for information only.
Table 11 – Augmented category 6 channel NEXT loss requirements, worst pair-to-pair

7
Frequency

(MHz)

1 ≤ f ≤ 330
330 < f ≤ 500
8
9
10
11

NEXT loss
(dB)

NEXT
channel

− (44.3 −15log( f /100))
− (54 − 20log( f /100))
20
20
≥ −20log(
10
+ 2 ⋅10
)

NEXT
≥ 31 − 27.15 log( f / 330)
channel

Table 12 – Augmented category 6 channel NEXT loss, worst pair-to-pair
Frequency

(MHz)

NEXT loss
(dB)

1.00
4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

65.0
63.0
58.2
56.6
53.2
51.6
50.0
48.4
43.4

39.9
34.8
33.1
31.7
28.7
26.1

12
13
14
15
16
17

NOTE - For the purposes of field measurements, for all frequencies from 330 MHz to
500 MHz, augmented category 6 channel pair-to-pair NEXT loss values are determined
using equation (16) . (Editor: The remainder of the text on this page is intended to be a
note. It is unknown whether equations and tables are allowed to appear in a note.)

18

dB (16)

− (44.3 − 15log( f /100))
− (54 − 20log( f /100))
( f − 330)
20
20
10
NEXT

≥ −20log(
+ 2 ⋅10
) − 3⋅
channel
170

19
20

14


PN-3-4426-AD10, draft 2.0 (to be published as TIA/EIA-568-B.2-10)
1
2
3
4
5

6/30/2005

The values in the table 13 are provided for information only.
Table 13 – Augmented category 6 channel NEXT loss, worst pair-to-pair (field
measurements)
Frequency
(MHz)

NEXT loss
(dB)

300.00
330.00
400.00
500.00

31.7
31.0
28.3
24.9

6
7
8
9
10
11

7.2.1.5

Permanent link pair-to-pair NEXT loss

For all frequencies from 1 MHz to 500 MHz, augmented category 6 permanent link pair-to-pair
NEXT loss shall meet the values determined using the equations in table 14. Calculations that
result in NEXT loss values greater than 65 dB shall revert to a requirement of 65 dB minimum. The
values in table 15 are provided for information only.
Table 14 – Augmented category 6 permanent link NEXT loss requirements, worst pair-to pair

12
Frequency
(MHz)

1 ≤ f ≤ 300
300 < f ≤ 500
13
14
15
16

NEXT loss
(dB)

− (44.3 −15log(f / 100))
− (54 − 20 log(f / 100))
20
20
NEXT ≥ −20 log(
10
+10
)
PL
NEXTPL ≥ 34 − 33.13 log( f / 300)

Table 15 – Augmented category 6 permanent link NEXT loss, worst pair-to pair
Frequency
(MHz)

NEXT loss
(dB)

1.00

4.00
8.00
10.00
16.00
20.00
25.00
31.25
62.50
100.00
200.00
250.00
300.00
400.00
500.00

65.0
64.1
59.4
57.8
54.6
53.1
51.5
50.0
45.2
41.8
36.9
35.3
34.0
29.9
26.7

15