地面无线电中继系统所用设备的测量方法 第2部分:分系统测量 第6节:分集、双路和热备用设备

[中文适用范围]： 主要涉及用于使无线电中继站处的两个或多个接收器适合分集接收的分集设备，假定分集设备包括用于切换和/或组合分集信道的电路，不包括 [外文原描述]： Deals with measurements on diversity equipment used for making two or more receivers at a radio-relay station suitable for diversity reception. Diversity equipment is assumed to comprise the circuit for switching and/or combining the diversity channels, excluding the diversity channel equipment itself i.e. transmitters, receivers, modulators, demodulators, etc., although these may also be involved in the measurements. Measurements on twin-path and hot stand-by equipment which are not treated in Part 2, Section Two of the publication are also considered in this section. However, measurements related to the properties of the switch and of the switching process, which are applicable equally to stand-by channel switching equipment and to diversity, twin-path and hot stand-by equipment, will be covered by reference to Part 2, Section Two.