标准摘要
[中文适用范围]： 所描述的测量方法涉及子系统的以下主要功能：两个或多个比特流的复用、用于交换目的的传输质量评估和/或警报指示信号（AIS）插入、编码和 [外文原描述]： Deals with the methods of measurement on a digital radio signal processsing subsystem.
英文名称Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 5: Digital signal processing sub-system