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一、广播电视工程对接地的特殊要求 广播电视系统是包括了节目制作、编辑播出、声控、光控、导控、卫星接收、微波传送、电话通讯及计算机网络等诸多设备和内容的综合系统。该系统接收、处理和传送的是无线电波及各种弱电信号,要求系统接地有较强的电磁适应性。广播电视弱电信号受电磁干扰,在其系统地线上会产生噪声压降,噪声压降与输入信号叠加并经多级放
I. Special requirements for grounding in broadcast and television projects Radio and television systems are integrated systems including program production, editing and broadcast, voice control, light control, guidance and control, satellite reception, microwave transmission, telephone communications, and computer networks. . The system receives, processes and transmits radio waves and various weak signals, and requires the system to have strong electromagnetic compatibility. Radio and television weak signals are subject to electromagnetic interference, and noise pressure drops are generated on the ground lines of the system. The noise voltage drop is superimposed on the input signal and multi-staged.