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在广播电视发射的安全播出工作中,独立完善的信号源系统和监控系统显得尤为重要。设计了一套独立完善的广播电视信号源系统和监控系统,信号源系统采用光纤、卫星信号作为主备两路信号源,接收处理后通过应急切换器,可自动或手动控制切换信号源,再送入音频处理器,对声音信号进行处理、动态补偿后送入发射机。监控系统分为两路,一路通过取自发射机的信号送入循环监听设备和显示器,值班人员可直观观察声音信号是否正常;另外一路通过开路监测广播信号的强度,实时监测,并在出现故障时通过调制度检测仪设备显示声、光报警,减少值班人员劳动强度。
In the broadcast of radio and television security broadcast, independent sound source system and monitoring system is particularly important. Designed a set of independent and perfect radio and television signal source system and monitoring system. The signal source system adopts optical fiber and satellite signal as the main and backup signal source, and after receiving and processing, it can automatically or manually control switching signal source and send Into the audio processor, the voice signal processing, dynamic compensation into the transmitter. Monitoring system is divided into two, all the way from the transmitter signal into the loop monitoring equipment and monitors, duty personnel can visually observe the sound signal is normal; the other way through the open circuit to monitor the intensity of broadcast signals, real-time monitoring, and in the event of failure Through the modulation detector device display sound and light alarm, reducing the labor intensity on duty.