侵入早噪声对双向有线电视网的影响最大，其大部分来自于用户室内。
The invading noise has the greatest effect on the upstream of two way CATV system, which mainly comes from the indoor of the users.
文中详细论述了作为多功能双向有线电视AM光纤-同轴网的特性，设计程序和安装、调试要领。
This paper discusses in detail about the characters, design procedures, installation and adjustment of multifunction two-way CATV AM optical fibre-coaxial network.
本文设计的HF C网管系统，是双向有线电视网络管理的重要设备，应用这些设备可以大大提高CAT V网络运行的可靠性和网络管理水平。
The designed HFC network management system in the paper is important equipment for two-way CATV network management.
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