IEC 62153-4-15:20 21+AMD1:2024 CSV规定了用三轴单元测量连接器、电缆组件和组件（例如模拟和数字传输系统的附件以及通信网络和电缆设备）的传输阻抗、屏蔽衰减或耦合衰减的程序。这第二版取消并取代了2015年出版的第一版。与上一版相比，此版本包括以下重大技术变更: a)加了平衡平衡连接器、组件和部件的耦合衰减测量，加了平衡平衡平衡转换器和不加平衡平衡平衡转换器； b)添加了测试适配器的应用； c)可移动短路平面的应用； d)三轴“吸收器”电池的应用； e)在接收器输入阻抗R高于外部电路Z2的特性阻抗的情况下校正测试结果。

IEC 62153-4-15:2021+AMD1:2024 CSV specifies the procedures for measuring with triaxial cell the transfer impedance, screening attenuation or the coupling attenuation of connectors, cable assemblies and components, for example accessories for analogue and digital transmission systems, and equipment for communication networks and cabling. This second edition cancels and replaces the first edition published in 2015.This edition includes the following significant technical changes with respect to the previous edition:
a) measurement of coupling attenuation of balanced connectors, assemblies and components with balun and balunless added;
b) application of a test adapter was added;
c) application of a moveable shorting plane;
d) application of the triaxial "absorber" cell;
e) correction of test results in the case that the receiver input impedance R is higher than the characteristic impedance of the outer circuit Z2.