摘要
介绍GB9254-2008中有关电信端口传导骚扰测试网络ISN的要求,对其作用和指标参数要求进行了分析,对其中LCL参数和测试原理进行了阐述;对使用不同ISN测试产品的电信端骚扰电压所得到的曲线和数据进行了比对,得出不同ISN的LCL值导致了测试结果的差异。
The requirements of ISN for telecommunication port＇s conducted disturbance testing according to GB 9254-2008 are introduced.The function and the characteristics of ISN are analyzed.The longitudinal conversion loss（LCL） of ISN and its testing principle are presented.Finally,the curves and data of telecommunication port＇s disturbance voltage by using different ISNs to test the same product and different kinds of products are discussed,which can be obtained that the different LCL values of different ISNs could cause the big differences of test results.
