DTX-PCU6S Patch Cord Adapters
Users Manual
C-2
Table C-2. Cat 6 Patch Cord Limits per TIA/EIA-568-B
Patch Cord Length and NEXT (dB)
Freq.
(MHz)
0.5m 1m 1.5m 2m 2.5m 3m 3.5m 4m 5m 7.5m 10m 15m 20m
RL
(dB)
1
65 65 65 65 65 65 65 65
65 65 65 65 65 19.8
4
65 65 65 65 65 65 65 65
65 65 65 65 65 21.6
8
65 65 65 65 65 65 65 65 65 65 64.79
63.77
63.06
22.5
10
65
65
65
65
65
65
65 64.91 64.48
63.6 62.93 61.95 61.26 22.8
16
63.03 62.64 62.28 61.96 61.66 61.4 61.15 60.92
60.5 59.67 59.04 58.14 57.53 23.4
20
61.11 60.72 60.37 60.05 59.76 59.5 59.25 59.03 58.63
57.82 57.21 56.35 55.78 23.7
25
59.19 58.8 58.46 58.14 57.86 57.6 57.37 57.15 56.75
55.97 55.39 54.58 54.06 24.0
31.25
57.26 56.89 56.55 56.24 55.97 55.71 55.48 55.27 54.89
54.14 53.58 52.83 52.35 23.1
62.5
51.31 50.96 50.64 50.36 50.11 49.88 49.67 49.49 49.15
48.52 48.07 47.5 47.18 20.0
100
47.29 46.96 46.67 46.41 46.18 45.97 45.79 45.62 45.33
44.79 44.43 44.02 43.82 18.0
125
45.39 45.07 44.79 44.54 44.33 44.13 43.96 43.8 43.53
43.05 42.74 42.4 42.26 17.0
200
41.4 41.11 40.86 40.65 40.46 40.3 40.15 40.03 39.81
39.46 39.26 39.08 39.05 15.0
250
39.51 39.24 39.01 38.82 38.65 38.5 38.37 38.26 38.08
37.79 37.64 37.55 37.55 14.0
Note
Patch cord performance requirements for CENELEC standards (CLC limits)
are equivalent to those for ISO/IEC standards, except that CENELEC
standards have no requirement for return loss below 4 MHz.
Table C-3. Cat 5e Patch Cord Limits per ISO/IEC-11801-2002
Patch Cord Length and NEXT (dB)
Freq.
(MHz)
0.5m 1m 1.5m 2m 2.5m 3m 3.5m 4m 5m 7.5m 10m 15m 20m
RL
(dB)
1
65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 19.8
4
65.0 65.0 65.0 65.0 65.0 65.0 64.6 64.3 63.7 62.4 61.6 60.3 59.5 21.6
8
62.1 61.3 60.7 60.2 59.7 59.3 58.9 58.5 58.0 56.8 56.0 54.9 54.1 22.5
10
60.2 59.4 58.8 58.3 57.8 57.4 57.0 56.7 56.1 55.0 54.2 53.1 52.4 22.8
16
56.2 55.4 54.8 54.3 53.8 53.4 53.1 52.8 52.2 51.2 50.4 49.5 48.8 23.4
20
54.2 53.5 52.9 52.4 52.0 51.6 51.2 50.9 50.4 49.4 48.7 47.7 47.2 23.7
25
52.3 51.6 51.0 50.5 50.1 49.7 49.4 49.1 48.5 47.6 46.9 46.0 45.5 24.0
31.25
50.4 49.7 49.1 48.6 48.2 47.8 47.5 47.2 46.7 45.8 45.1 44.3 43.9 23.1
62.5
44.5 43.9 43.3 42.9 42.5 42.1 41.8 41.6 41.1 40.3 39.8 39.3 39.0 20.0
100
40.6 39.9 39.4 39.0 38.6 38.3 38.0 37.8 37.4 36.8 36.4 36.0 35.8 18.0
125
38.7 38.1 37.6 37.2 36.8 36.5 36.3 36.1 35.7 35.1 34.8 34.5 34.4 17.0
200
34.8 34.2 33.7 33.4 33.1 32.8 32.6 32.4 32.2 31.7 31.5 31.4 31.4 15.0
250
32.9 32.4 32.0 31.6 31.3 31.1 30.9 30.8 30.5 30.2 30.0 30.0 30.0 14.0
