800Hz通信电缆屏蔽系数的计算  

Calculation of Shielding Factor at 800Hz for Communication Cables

作　　者：刘红杰[1] 马为民 李书芳[1] 

机构地区：[1]北京邮电大学,北京100876 [2]中讯邮电咨询设计院,郑州450007

出　　处：《电信工程技术与标准化》2008年第11期47-51,共5页Telecom Engineering Technics and Standardization

摘　　要：文章分析了通信电缆800Hz磁屏蔽系数的计算方法,并根据现行行业规范及国际导则中给定的部分参数建议值,对不同情况下的屏蔽系数进行了计算。计算结果表明,现有文献中给出的屏蔽系数参考值有些偏小,进而会影响通信双线回路中杂音电动势计算的准确性。The calculation methods of shielding factor at 800Hz for communication cables are analyzed. According to industry specifications and intemational directives at present, we calculate the shielding factor under different circumstances. The results manifests that the values of shielding factor in present reference are a little smaller, which can influence the calculative veracity of cacophony electromotive force in dual-line telephone loop.

关 键 词：通信电缆 干扰 音频 屏蔽系数 

分 类 号：TN913.32[电子电信—通信与信息系统]