IEC 62153的这一部分涉及三轴管中管法。该三轴法适用于确定匹配屏蔽连接器（包括电缆和连接器之间的连接）和电缆组件的表面传输阻抗和/或屏蔽衰减和耦合衰减。该方法也可推广到测定平衡或多芯连接器和多芯电缆组件的传输阻抗、耦合或屏蔽衰减。对于传输阻抗和屏蔽或耦合衰减的测量，只需要一个测试装置。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 62153 deals with the triaxial tube in tube method. This triaxial method is suitable to determine the surface transfer impedance and/or screening attenuation and coupling attenuation of mated screened connectors (including the connection between cable and connector) and cable assemblies. This method could also be extended to determine the transfer impedance, coupling or screening attenuation of balanced or multipin connectors and multicore cable assemblies. For the measurement of transfer impedance and screening- or coupling attenuation, only one test set-up is needed.All current amendments available at time of purchase are included with the purchase of this document.