IBM 8265, Руководство по подготовке площадки

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Chapter 5. Planning for Twisted Pair Cable Connections
41
Near-End Crosstalk (NEXT)
The following crosstalk measurements between 772 KHz and 100 MHz were
performed on 305 m (1000 ft) of cable.
Table 28. Near-End Crosstalk for UTP Cables
Frequency (MHz) Category 3 Category 4 Category 5
0.772 43 58 64
1 41 56 62
4 32 47 53
8 28 42 48
10 26 41 47
16 23 38 44
20 — 36 42
25 — — 41
31.25 — — 40
62.50 — — 35
100 — — 32