EN 61753-052-3:2002 Fibre Optic Interconnecting Devices and Passive Components Performance Standard - Part 052-3: Single-Mode Fibre, Pigtailed-Style Fixed Attenuators for Category U - Uncontrolled Environment
2016EN 61753-052-3:2016 Fibre optic interconnecting devices and passive components - Performance standard - Part 052-3: Single-mode fibre nonconnectorized fixed attenuator - Category U in uncontrolled environment
2002EN 61753-052-3:2002 Fibre Optic Interconnecting Devices and Passive Components Performance Standard - Part 052-3: Single-Mode Fibre, Pigtailed-Style Fixed Attenuators for Category U - Uncontrolled Environment