电路杂音是衡量长途载波电路的重要技术指标。1994年11月份,我们根据襄樊市邮电局电信工作计划和本地区长途电信网的实际情况对1993年10月份以来,随州至襄凡、武昌、枣阳等地的部份300路小同轴载波电路杂音指标超标的问题进行了攻关性的质量分析诊断,现就诊断情况纪实如下:开始我们仍按杂音处理程序判定杂音确实来自预调通路部份,且每基的第3、6、9、12 Circuit noise is a measure of long-distance carrier circuit important technical indicators. In November 1994, according to the work plan of Xiangfan Post and Telecommunications Bureau and the actual situation of the long-distance telecommunication network in our region, since October 1993, some 300 small coaxial carrier circuits (Suizhou to Xiangfan, Wuchang and Zaoyang) Mucus indicators exceeded the issue of the quality of the diagnosis of diagnosis, the diagnosis is now documented as follows: At the beginning we still press the noise handling procedures to determine the noise from the pre-tune part of the channel, and each of the first 3,6,9,12