标准摘要
[中文适用范围]： 这些测量是对第 1 部分第 4 节中已给出的测量的补充。所有测量都是在系统环路上执行的，方法是通过测试环路转换器建立穿过发送和接收链的传输路径，或者通过 [外文原描述]： This section deals with baseband-to-baseband measurements for frequency division multiplex (f.d.m.) telephony. These measurements are additional to those given in part 1, section four of this publication, which are common to telephony and to television, for example group-delay and amplitude/frequency characteristics.
英文名称Methods of measurement for radio equipment used in satellite earth stations - Part 3: Methods of measurement on combinations of sub-systems - Section four: Measurements for frequency division multiplex (f.d.m.) transmission