电线电缆网 > 通讯电缆 > 此款线材如何做才可满足衰减及回损要求（完整版）
此款线材如何做才可满足衰减及回损要求 - 无图版
BAIDMQ --- 2008-10-13 13:57:10
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下面有关于CAI COAXIAL CABLE 的规格及测试要求,请问该如何做才可满足测试要求? 请各位高手指点.
1. Mechanical Specification
The mechanical specifications for the cable as follows:
Inner Conductor : To be copper
Diameter of Inner Conductor : 1.0 +/-0.02mm
Outer Braid / Tape : No contact between dissimilar metals
External Diameter of Sheath : 6.55 +/-0.3mm
Bending Radius : 40mm
Flexing Radius : 75mm
The DC resistance of the inner conductor should be <26 W/km.
The DC resistance of the outer conductor should be <15 W/km.
2.Longitudinal Loss (Attenuation)
(Reference BS EN 50117-1:1997 Section 11.8)
The attenuation of the cable under test should meet the following:
5 MHz : < 1.6 dB/100m
50 MHz : < 4.6 dB/100m
100 MHz : < 6.5 dB/100m
200 MHz : < 9.5 dB/100m
460 MHz : < 15.0 dB/100m
860 MHz : < 19.5 dB/100m
1000 MHz : < 21.5 dB/100m
1750 MHz : < 29.0 dB/100m
2150 MHz : < 32.5 dB/100m
3.Return Loss
(Reference BS EN 50117-1:1997 Section 11.6)
The return loss of the cable under test should meet the following:
5 - 30 MHz : > 23 dB
30 - 470 MHz : > 23 dB
470 - 862 MHz : > 20 dB
862 - 2150 MHz : > 18 dB
In each frequency band, 3 peak return loss values up to 4dB lower than the
stated specified limit are permissible.
AbelGuo --- 2008-10-13 14:02:59
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先按Spec试试。不然怎么知道可不可以。
但绝缘一定Foam-PE
BAIDMQ --- 2008-10-13 14:36:39
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zhyx2006 --- 2008-10-13 15:28:51
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xiaofan --- 2008-10-13 16:17:15
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用GAS PE較好.
jswjyzw --- 2008-10-13 16:51:38
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Achai127 --- 2008-10-13 17:06:16
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jswjyzw --- 2008-10-13 17:10:31
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一定用铜箔
CHUNLI --- 2008-10-13 17:12:05
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jswjyzw --- 2008-10-13 17:14:11
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西班牙的采用英表
zhyx2006 --- 2008-10-13 17:42:21
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BAIDMQ --- 2008-10-13 17:58:32
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zhyx2006 --- 2008-10-14 12:39:07
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BAIDMQ --- 2008-10-14 13:52:53
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zhyx2006 --- 2008-10-15 12:26:25
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BAIDMQ --- 2008-10-15 17:54:38
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现在想求购以上规格同轴线300米,每100米/卷,不知哪位愿帮我做, 急.
wluo --- 2009-02-14 17:51:00
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jswjyzw --- 2009-02-15 16:08:17
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magintion --- 2009-07-24 15:42:34
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