EN 50289-1-9:2017 通信电缆.试验方法规范.第1-9部分:电气试验方法.衰减不平衡(纵向转换损失,纵向转换传递损失)
Communication cables - Specifications for test methods - Part 1-9: Electrical test methods - Unbalance attenuation (transverse conversion loss TCL transverse conversion transfer loss TCTL)