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SYWV(Y)75型同轴电缆特性
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型号 SYWV ( Y ) -75 |
-5 |
-7 |
-9 |
-12 |
绝缘电阻 Ω .KM |
10000 |
10000 |
10000 |
10000 |
缆芯介电强度 KV |
1.6 |
1.6 |
1.6 |
1.6 |
护套介电强度( KV ) |
火花 |
8 |
8 |
8 |
8 |
浸水 |
5 |
5 |
5 |
5 |
电容 Pf/m |
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54 |
52 |
50 |
50 |
特性阻抗Ω |
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75±3.0 |
75±2.5 |
75±2.5 |
75±2.5 |
结构回波损耗( dB ) min |
VHF |
20 |
20 |
20 |
20 |
UHF |
18 |
18 |
18 |
18 |
衰减常数 Db/100m max |
50MHZ |
4.8 |
3.2 |
2.4 |
1.9 |
200MHZ |
9.7 |
6.4 |
5 |
3.9 |
300MHZ |
11.9 |
7.9 |
6.2 |
4.8 |
450MHZ |
14.5 |
9.7 |
7.6 |
5.9 |
550MHZ |
16.8 |
10.7 |
8.5 |
6.7 |
750MHZ |
19.7 |
12.9 |
10.1 |
7.9 |
800MHZ |
20.3 |
13.3 |
10.4 |
8.2 |
860MHZ |
21 |
13.8 |
10.8 |
8.5 |
1000MHZ |
22.7 |
14.9 |
11.7 |
9.2 |
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