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[GB 4572-1984] 通信网中通路衰减失真测试方法[已作废]
发布时间：1985-04-01
实施时间：1985-04-01
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[GB/T 4574-1984] 模拟通信网中实际电路噪声与模拟系统负荷的电路噪声测试方法[已作废]
发布时间：1984-07-17
实施时间：1985-04-01
本标准提出两种噪声测试方法。第一种方法适用于测量模拟通信网中的实际电路噪声，同时可供维护测试使用。第..
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[GB 4575-1984] 长途通信网频分制系统频率比较导频系列[已作废]
发布时间：1984-07-17
实施时间：1985-04-01
本标准适用于长途通信网中的频分制多路系统，即对称电缆载波系统、小同轴电缆载波系统及微波用载波终端设备..
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[GB/T 4573-1984] 模拟通信网中相对功率电平的测试方法[已作废]
发布时间：1984-07-01
实施时间：1985-04-01
本标准适用在模拟通信网中，测量网路二线电路交换点的测量点、四线电路交换点的测量点、音频四线接口点、基..
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[GB/T 3971.3-1983] 电话自动交换网多频记发器信号技术指标测试方法[现行]
发布时间：1983-01-02
实施时间：1984-10-01
本测试方法以GB 3377—82《电话自动交换网多频记发器信号方式》为依据。测试内容包括：a.多频设..
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- GB/T 13137-1991
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