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| The following tables list attenuation and near-end crosstalk (NEXT) specifications from
ANSI/TIA/EIA-568A for Category 3, Category 5 and 6 unshielded twisted pair (UTP) cables. |
| TABLE 1: HORIZONTAL UTP CABLE ATTENUATION dB/100M (dB/1000 FT) |
FREQUENCY
(MHZ) |
CATEGORY
3 |
CATEGORY
5e
|
CATEGORY
6 |
| 0.772 |
2.2 (6.7) |
1.8 (5.5) |
1.8 (5.5) |
| 1.0 |
2.6 (7.9) |
2.0 (6.1) |
2.0 (6.1) |
| 4.0 |
5.6 (17.1) |
4.1 (12.5) |
3.8 (11.6) |
| 8.0 |
8.5 (25.9) |
5.8 (17.7) |
5.3 (16.2) |
| 10.0 |
9.7 (29.6) |
6.5 (19.8) |
6.0 (18.3) |
| 16.0 |
13.1 (39.9) |
8.2 (25.0) |
7.6 (23.2) |
| 20.0 |
- |
9.3 (28.4) |
8.5 (25.9) |
| 25.0 |
- |
10.4 (31.7) |
9.5 (29.0) |
| 31.25 |
- |
11.7 (35.7) |
10.7 (32.6) |
| 62.5 |
- |
17.0 (51.8) |
15.4 (47.0) |
| 100.0 |
- |
22.0 (67.1) |
19.8 (60.4) |
| 200.0 |
- |
- |
29.0 (88.4) |
| 250.0 |
- |
- |
32.8 (100.0) |
|
| TABLE 2: HORIZONTAL UTP CABLE NEXT LOSS, dB (WORST PAIR COMBINATION) 100M (328 FT)
|
|
FREQUENCY
(MHZ) |
CATEGORY
3 |
CATEGORY
5e
|
CATEGORY
6 |
| 0.772 |
43 |
67 |
76 |
| 1.0 |
41 |
65 |
274 |
| 4.0 |
32 |
56 |
65 |
| 8.0 |
27 |
52 |
61 |
| 10.0 |
26 |
50 |
59 |
| 16.0 |
23 |
47 |
56 |
| 20.0 |
- |
45 |
55 |
| 25.0 |
- |
44 |
53 |
| 31.25 |
- |
42 |
52 |
| 62.5 |
- |
38 |
47 |
| 100.0 |
- |
35 |
44 |
| 200.0 |
- |
- |
40 |
| 250.0 |
- |
- |
38 |
| | | |
