GSO IEC TR 62153-4-0:2014
金属通信电缆的测试方法 第4-0部分：电磁兼容性 表面传输电阻和屏蔽衰减之间的关系以及建议限值

Metallic communication cable test methods - Part 4-0: Electromagnetic compatibility (EMC) - Relationship between surface transfer impedance and screening attenuation, recommended limits

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标准号

GSO IEC TR 62153-4-0:2014

发布

2014年

发布单位

GSO

当前最新

GSO IEC TR 62153-4-0:2014

 

 

适用范围

This technical report describes important background material used during the revision of IEC 61196-1:1995, Clause 14, Guidance for surface transfer impedance and screening attenuation limits for flexible r.f. cables. In this technical report, the relationship between surface transfer impedance (ZT) and screening attenuation (as) is given, also measurements of ZT and as are provided to show the correlation of mean screening attenuation between 200 MHz and 500 MHz and ZT at both 30 MHz and 300 MHz. The sensitivity of as to the relative velocity difference between the inner and outer system is shown. The cable data sheet should show the as values in a standardized form – Δv/v = 10 % and the characteristic impedance of the outer system is 150 Ω. It is also shown that a relative velocity difference change from 10 % to 40 % gives an improvement of 12 dB in screening attenuation.

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