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Transmission Performance Specifications For Field Testing of Balanced Cabling Systems

This document provides users with the opportunity to use comprehensive test methods to validate the transmission performance characteristics of installed category 7, 6, 5e and lower grade twisted-pair cabling systems. The categories of balanced cabling systems in this bulletin correspond with the balanced cabling categories of ANSI/TIA/EIA-568-B.1, ANSI/TIA/EIA-568-B.2-1, and ISO/IEC 11801:2002.

Horizontal Channel (Copper)

Performance Specified in:
TIA/EIA-568-B.1 (category 5e), TIA/EIA-568-B.2-1 (category 6), and proposed TIA/EIA-568-B.2-10 (augmented category 6) ISO/IEC 11801:2002 2nd Edition (classes D, E and F) and proposed amendment 1 to ISO/IEC 11801:2002

Horizontal Channel (Copper)

Transmission Performance Comparison @ 100 MHz

Cabling Type Channel Insertion Loss (dB) Channel NEXT (dB) Channel ELFEXT (dB) Channel Return Loss (dB) Channel *ACR (dB)
Category 5e/Class D (@ 100 MHz) 24.0 30.1 17.4 10.0 6.1
Category 6/Class E (@ 100 MHz) 21.7 39.9 23.3 12.0 18.2
Class 7/Class F (@ 100 MHz) 20.8 62.9 44.4 12.0 42.1

*Not specified by TIA

Link Test Configuration

Performance Specified in:
TIA/EIA-568-B.1 (category 5e), TIA/EIA-568-B.2-1 (category 6), and proposed TIA/EIA-568-B.2-10 (augmented category 6) ISO/IEC 11801:2002 2nd Edition (classes D, E and F) and proposed amendment to ISO/IEC 11801'2002

Link Test Configuration

Transmission Performance Comparison @ 100 MHz

Cabling Type Permanent Link Insertion Loss (dB) Permanent Link NEXT (dB) Permanent Link ELFEXT (dB) Permanent Link Return Loss (dB) Permanent Link *ACR (dB)
Category 5e/Class D (@ 100 MHz) 20.4 32.3 18.6 12.0 11.9
Category 6/Class E (@ 100 MHz) 18.5 41.8 24.2 14.0 23.3
Class 7/Class F (@ 100 MHz) 17.7 65.0 46.0 14.0 47.3

Some points specified for transmission field testing for twisted-pair cabling systems:

  • Twisted-Pair cabling systems are comprised of cables and connecting hardware specified in TIA/EIA-568-B.2 and ISO/IEC 11801:2002.
  • Required test parameters include wire-map, length, insertion loss, and pair-to-pair NEXT loss, powersum NEXT loss, ELFEXT, powersum. ELFEXT, return loss, propagation delay, and delay skew.
  • Two levels of pass or fail are indicated, depending on measured margin compared to minimum specifications. Testing of NEXT loss is required in both directions.
  • Requirements are intended for performance validation and are provided in addition to '568-B.1 & B.2 requirements on components and installation practices. Level III field test accuracy required for category 6/class E.