标准摘要
[中文适用范围]： 处理用于频分复用电话的模拟无线电中继系统的噪声性能的基带到基带测量。所涵盖的测量与信号相关，是对 IEC 出版物 IEC 487-3-2 中测量的补充 [外文原描述]： Deals with baseband-to-baseband measurements of the noise performance of simulated radio-relay systems used for frequency division multiplex telephony. These measurements are additional to those already given in Part 3, Section Three of IEC 60487-3-3.
英文名称Methods of measurement for equipment used in terrestrial radio-relay systems - Part 3: Simulated systems - Section Four: Measurements for f.d.m. transmission