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作为有线电视网络的心脏-传输中心,虽然利用电视墙监测信号具有全程、实时的优点,但电视墙投资较大,需要占用很大的空间,特别是当节目增加到上百套时,对所有节目进行全程、实时监控是不现实的,我们根据现有条件制作了简易有线电视节目巡检电路,只需使用几台监视器分别对有线电视信号采取自动定时切换频道的监视方法,可较好地解决这个问题。它不需专用设备,只把一个触发电路安装在要触发的设备里,定时触发电视频道
As the heart-transmission center of cable TV network, although the use of video wall monitoring signal has the advantages of full-time and real-time, the investment in video wall is large and takes up a lot of space. Especially when the number of programs increases to more than 100 sets, It is unrealistic to carry out the whole program and real-time monitoring. According to the existing conditions, we have made a simple cable television program inspection circuit. It is better to use several monitors to monitor the channel of the cable TV automatically and switch channels regularly. To solve this problem. It does not require special equipment, only a trigger circuit installed in the device to be triggered, regular trigger TV channels