135
APPENDIX A: Test Standards
A.4 EIA/TIA TSB-67—Test Limits
When testing to Category 3, Category 4, or Category 5 UTP limits, the
cable category as well as the Cable Test Configuration is chosen from the
Cable Test Standards menu. To test the Channel, including user patch and
equipment cords, use the Modular Jack Performance Module and test to
Level-I accuracy. The Basic Link can be tested to Level-I accuracy with the
Modular Jack Performance Module or it can be tested to Level-II accuracy
with the Modular Plug Performance Module. (Level II is higher in
performance than Level I. It is not possible to attain Level-II accuracy using
the Modular Jack Performance Module.)
Table A-1. Attenuation
Frequency
MHz
Category 3 (dB)
Category 4 (dB)
Category 5 (dB)
Channel
Link
Channel
Link
Channel
Link
1
4.2
3.2
2.6
2.2
2.5
2.1
4
7.3
6.1
4.8
4.3
4.5
4
8
10.2
8.8
6.7
6
6.3
5.7
10
11.5
10
7.5
6.8
7
6.3
16
14.9
13.2
9.9
8.8
9.2
8.2
20
11
9.9
10.3
9.2
25
11.4
10.3
31.25
12.8
11.5
62.5
18.5
16.7
100
24
21.6
