IEC 62153-4-6:20 17 RLV包含国际标准及其红线版本。红线版本只有英文版本。Redline版本为您提供了一种快速简单的方法来比较该标准与其前一版本之间的所有变化。红线版本不是IEC官方标准，只有标准的当前版本才被视为官方文件。 IEC 62153-4-6:20 17通过向电缆的屏蔽层施加明确定义的电流和电压并测量感应电压以确定表面传输阻抗来确定屏蔽金属通信电缆的屏蔽有效性。 频率范围从几kHz到1？GHz可以使用普通的高频仪器来制造。

IEC 62153-4-6:2017 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.

IEC 62153-4-6:2017 determines the screening effectiveness of a shielded metallic communication cable by applying a well-defined current and voltage to the screen of the cable and measuring the induced voltage in order to determine the surface transfer impedance.
Measurements in the frequency range from a few kHz up to and above 1？GHz can be made with the use of normal high frequency instrumentation.