Standard No.:	GB/T 4574-1984
English Name:	Measuring methods for actual circuit noise and the circuit noise in simulating system loading over the analogue communication network
Chinese Name:	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
Chinese Classification:	M15    Communication network performance index and testing
Professional Classification:	GB    National Standard
ICS Classification:	33.040.50 33.040.50    Lines, connections and circuits 33.040.50
Issued by:	MIIT
Issued on:	1984-07-17
Implemented on:	1985-4-1
Status:	abolished
Abolished on:	2005-10-14
Language:	English
File Format:	PDF
Price(USD):	340.0

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。第二种方法提出用白噪声模拟系统负荷来测量通信网中由频分多路复用系统组成的电路、基群段和超群段由本系统所产生的噪声，适宜 和于验收测试和质量检查。