OVE EN IEC 61280-4-1/A1:2021
光纤通信子系统测试程序 第 4-1 部分:安装的布线设备 多模衰减测量(IEC 86C/1720/CDV)(修正案)(英文版)
Fibre-optic communication subsystem test procedures - Part 4-1: Installed cabling plant - Multimode attenuation measurement (IEC 86C/1720/CDV) (Amendment) (english version)