DIN EN 61753-042-2:2015 光纤互连设备和无源元件 性能标准 第 042-2 部分:C 类插头尾纤式和插头插座式 OTDR 反射设备 受控环境(IEC 61753-042-2:2014);德文版 EN 61753-0
Fibre optic interconnecting devices and passive components - Performance standard - Part 042-2: Plug-pigtail-style and plug-receptacle-style OTDR reflecting devices for category C - Controlled environments (IEC 61753-042-2:2014); German version EN 61753-0