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电视差转机可能出现的各种干扰可分为外界干扰和内部干扰两大类。外界干扰系指天电干扰、无线电设备及工业、家用电气设备等所产生的高频及脉冲干扰。内部干扰系指图像和伴音间的相互干扰、噪声的起伏干扰、寄生振荡、各种组合频率以及收发天线间耦合引起的干扰。本文重点讨论电视差转机(以下简称差转机)收发通道的干扰以及解决措施。
Television may turn a variety of interference may be divided into external interference and internal interference two broad categories. External interference refers to the high-frequency and impulsive interference generated by the interference of radio, radio equipment, industrial and household electrical equipment. Interference refers to the mutual interference between images and sound, undulation interference of noise, parasitic oscillation, various combinations of frequencies and interference caused by the coupling between transmitting and receiving antennas. This article focuses on the television transfer machine (hereinafter referred to as the transfer machine) transceiver channel interference and solutions.