YD/T 814.1-2004.Closure for optical fiber cables Part 1:Closure for outdoor optical fiber cables. 1范围 YD/T 814.1规定了室外光缆接头盒的产品分类、型号、结构、组成、技术要求、试验方法、检验规

YD/T 769-2003.Optical fiber cables for core network - Central tube type of outdoor optical fiber cables for telecommunication. 1范围 YD/T 769规定了中心管式通信用室

YD/T 741-2002.Specification of Positive Temperature Cofficient (PTC) thermistors for the over - current protection of communications installations. 1范

YD/T 731-2002.High Frequency Switch - mode Rectifier for Telecommunication. 1范围 YD/T 731规定了通信用高频开关整流器的技术要求、试验方法、检验规则和包装贮运。 YD/T 731适用于通信用高频开关整流器(以下简称整

YD/T 723.3-2007.Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 3:Laminated Steel Plastic Strip. 1范围 YD/T 723-2007的

YD/T 723.1-2007.Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 1:General. 1范围 YD/T 723-2007的YD/T 723.1规定了通信电缆光缆用金属

YD/T 695-2004.Principles and technical requirements of protection against overvoltages and overcurrents in local telecom system. 1范围 YD/T 695规定了市话通信系统

YD/T 694-2004.Main distribution frame. 1范围 YD/T 694规定了总配线架的产品分类、要求、试验方法、检验规则及标志、包装、运输和贮存等。 YD/T 694适用于电话交换局及类似的电信交换中心和接人网设备与铜芯双绞线市话通信电缆连接的独立设置的总配线架。 2

YD/T 718-2006.Technical Requirements and Measuring Methods of Telegraphone. 1范围 YD/T 718规定了录音电话机录音状态的传输性能、平衡回损、安全和防雷击性能、环境适应性、电磁兼容性能等技术要求及测试方法。 YD/T 7

YD/T 723.5-2007.Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 5:L aminated Metal Plastic foil. 1范围 YD/T 723.5规定了通

YD/T 723.4-2007.Laminated Metal Plastic Strip for Communication Cable and Optical Fibre Cable Part 4:Laminated Copper Plastic Strip. 1.范围 YD/T 723- 20

YD/T 502-2007.Diesel generator sets for Telecommunications. 1范围 YD/T 502规定了通信行业使用的由往复式内燃(RIC) 柴油发动机、交流(a.c. )发电机、控制装置和辅助设备组成的工频柴油发电机组的技术要求、试验方法、检验规则、标