Standard No.:	YD/T 828.26-1997
English Name:	Methods of measurement for equipment used in digital microwave transmission systems Part 2:Measurements on terrestrial radio-relay systems
Chinese Name:	数字微波传输系统中所用设备的测量方法 第2部分：地面无线接力系统的测量 第6节 保护倒换
Chinese Classification:	M34    Microwave communication equipment
Professional Classification:	YD    Professional Standard - Telecommunication
Issued by:	MOPT
Issued on:	1997-3-27
Implemented on:	1997-7-1
Status:	abolished
Abolished on:	2024-07-11
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	150.0
Delivery:	via email in 1~3 business day

主题内容与适用范围：本标准规定与数字无线接力系统有关的端对端保护倒换设备的测量方法。本标准所给出的Ｎ＋１倒换配置的测量方法同样适用于Ｎ＋２倒换配置，也适用于１＋１、双通道和热备用配置。第５章所述的波道优先级测试只适用于Ｎ＋１和Ｎ＋２倒换配置。在保护倒换设备与无线终端设备在物理结构上可分离的配置中（见图１），应该按照ＹＤ／Ｔ８２８．２５对倒换设备输入和输出端口处的接口进行测量。