论文部分内容阅读
每一个电视播出中心、节目制作中心,均需配备具有主备系统自动切换功能的同步信号自动切换器。它的目的是当主用同步机在制作或播出过程中出现故障时,自动切换器能自动断开主用同步机,并将备用同步机的信号送出;同时向值班人员报警,并显示出主用同步机的故障部位,使技术人员有充裕时间、有针对性地对同步机进行检修。在实际中,同步机出现故障可分两类:一类是同步机机内的故障,这种故障对同步机所有输出信号都有影响;另一类则不然,它是同
Each TV broadcast center, program production center, are required to be equipped with a master-slave system automatically switches the automatic synchronization signal switching function. Its purpose is when the main synchronous machine in the production or broadcast process failure, the automatic switch automatically disconnect the main synchronous machine, and spare synchronous machine signals sent at the same time to the police on duty and shows the main Synchronous machine with the fault site, so that technical staff have plenty of time, targeted for synchronous machine maintenance. In practice, synchronous machine failure can be divided into two categories: one is the synchronous machine machine fault, the fault on the synchronous machine all the output signals have an impact; the other is otherwise it is the same