BS EN 61753-089-2:2013
光纤互连装置和无源部件.性能标准.C类用非连接单模双向OTDR监控WWDM设备.受控环境
Fibre optic interconnecting devices and passive components. Performance standard. Non-connectorized single-mode bidirectional OTDR monitoring WWDM devices for category C. Controlled environment