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

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

非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 DIN IEC 60487-2-4:1988 前三页，或者稍后再访问。

如果您需要购买此标准的全文，请联系： 。

注意： 点击下载后，生成下载文件时间比较长，请耐心等待......

标准号

DIN IEC 60487-2-4:1988

发布

1988年

发布单位

德国标准化学会

 

 

被代替标准

DIN IEC 12E(CO)87:1986

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.

DIN IEC 60487-2-4:1988相似标准

推荐