Appendix A
Test Standards
Page A-7
Table 2. NEXT
Frequency
MHz
Cat 3 (dB)
Cat 4 (dB)
Cat 5 (dB)
Channel
Link
Channel
Link
Channel
Link
1.0
39.1
40.1
53.3
54.7
>60.0
>60.0
4.0
29.3
30.7
43.3
45.1
50.6
51.8
8.0
24.3
25.9
38.2
40.2
45.6
47.1
10.0
22.7
24.3
36.6
38.6
44.0
45.5
16.0
19.3
21.0
33.1
35.3
40.6
42.3
20.0
31.4
33.7
39.0
40.7
25.0
37.4
39.1
31.25
35.7
37.6
62.5
30.6
32.7
100.0
27.1
29.3
Table 3. CAT3, CAT4, and CAT5 Pass/Fail Limits
Length
Channel:
≤
100 meters
Link:
≤
94 meters
Characteristic
Impedance
100 + 25
Ω
Split Pair
NEXT < 20 dB (8 - 10 MHz)
Resistance
<9.9
Ω
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