DIN IEC 60487-2-4-1988 地面无线电中继系统设备的测量方法.第2部分:分系统测量.第4节:频率调制器

标准号：DIN IEC 60487-2-4-1988
中文标准名称：地面无线电中继系统设备的测量方法.第2部分:分系统测量.第4节:频率调制器
英文标准名称：Methods of measurement for equipment used in terrestrial radio-relay systems; measurements for sub-systems; frequency modulators; identical with IEC 60487-2-4, edition 1984
标准类型：M36;M74
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：M36;M74
国际标准分类号：33.060.30
适用范围：Methods are given in this standard for the measurement of the electrical characteristics of frequency modulators. Furthermore, where possible, only measurements involving the basic modulator are considered, that is excluding the baseband section comprising the preemphasis network and the networks associated with sound sub-carrier signals, pilot signals and auxiliary signals. Methods of measurement for frequency demodulators are given in IEC 487-2-5. Measurements between baseband terminals of modulator/demodulator assemblies are covered by various sections of IEC 487-3.