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 GB/T 4958.15-1992  
Methods of measurement for equipment usedin terrestrial radio-relay systems--Part 1:Measurements common to sub-systems and simulated radio-relay systems--Section four--Measurements in the baseband

地面无线电接力系统所用设备的测量方法 第一部分:分系统和仿真无线电接力系统通用的测量 第四节 基带范围的测量
 GB/T 13714-1992  
Fiber optic branching devices--Part 3:Sectional specification--One-to-n wavelength Multiplexer/demultiplexer

纤维光学分路器 第三部分:分规范 1至n个波长复用器/解复用器 (可供认证用)
 GB/T 13712-1992  
Fibre optic Modulators--Part 1:Generic specification

纤维光学调制器 第一部分:总规范 (可供认证用)

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