EN 61753-052-3-2002 光纤互连器件和无源器件性能标准.第052-3部分:U类带尾纤的固定式单膜光纤衰减器.非受控环境 IEC 61753-052-3:2001
Fibre Optic Interconnecting Devices and Passive Components Performance Standard - Part 052-3: Single-Mode Fibre, Pigtailed-Style Fixed Attenuators for Category U - Uncontrolled Environment