网络线缆-双绞线 [2]
表2 特定频率下的NEXT衰减极限
| 频率(MHz) | 最小NEXT | |||||
| 信道(100米) | 链路(90米) | |||||
| 3类 | 4类 | 5类 | 3类 | 4类 | 5类 | |
| 1 | 39.1 | 53.3 | 60.0 | 40.1 | 54.7 | 60.0 |
| 4 | 29.3 | 43.3 | 50.6 | 30.7 | 45.1 | 51.8 |
| 8 | 24.3 | 38.2 | 45.6 | 25.9 | 40.2 | 47.1 |
| 10 | 22.7 | 36.6 | 44.0 | 24.3 | 38.6 | 45.5 |
| 16 | 19.3 | 33.1 | 40.6 | 21 | 35.3 | 42.3 |
| 20 | 31.4 | 39.0 | 33.7 | 40.7 | ||
| 25 | 37.4 | 39.1 | ||||
| 31.25 | 35.7 | 37.6 | ||||
| 62.5 | 30.6 | 32.7 | ||||
| 100 | 27.1 | 29.3 | ||||