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
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
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. ¡¡
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