有线电视系统交流声干扰与对抗

Interference and Confrontation of Hum Noise in Cable Television System

针对有线电视系统中交流声干扰对终端接收图像的危害,探讨了形成交流声干扰的各种因素,并针对有线电视系统中有源设备接地不当、电磁环境造成的交流声干扰,尽可能全面、系统地找出交流声干扰的对抗手段和措施,达到抑制交流声干扰的目的。

Hum noise in the cable television system interferes terminal images.The article discusses various reasons that the hum is formed in cable television system,such as the imperfect earth,electromagnetic environment.Following the reasons,measures against the hum are put forward in a comprehensive,systematic principle,and the purpose of interference suppression hum is achieved.