IEC TR 62153-4-0:2007
Metallic communication cable test methods - Part 4-0: Electromagnetic compatibility (EMC) - Relationship between surface transfer impedance and screening attenuation, recommended limits
- Standard No.
- IEC TR 62153-4-0:2007
- Release Date
- 2007
- Published By
- International Electrotechnical Commission (IEC)
- Latest
- IEC TR 62153-4-0:2007
- Scope
- 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.
IEC TR 62153-4-0:2007 history
- 2007 IEC TR 62153-4-0:2007 Metallic communication cable test methods - Part 4-0: Electromagnetic compatibility (EMC) - Relationship between surface transfer impedance and screening attenuation, recommended limits
