BS EN 61753-042-2-2014 纤维光学互连器件和无源元件. 性能标准. C类插头猪尾型和插座型OTDR反射设备. 受控环境
Fibre optic interconnecting devices and passive components. Performance standard. Plug-pigtail-style and plug-receptacle-style OTDR reflecting devices for category C. Controlled environments