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许多县、市级电视转播台或电视台的设备,有相当一部分是70年代至80年代生产的国产机。我以的GSZ-1型300W电视差转机是北京广播器材厂早期生产的米波段机,是于85年开始运行使用。该差转机工作多年,电路老化,故障率特高,技术性能不稳定,难维持正常播出,对电视节目安全体质播出不能胜任。要想进一步提高播出质量,必须进行固态化改造。根据小台维护经费不足的现状,可以通过少花钱,挖掘旧设务备的潜力,进行可行的局部技术改造的办法加以解决,采用当今电视发射的新技术、新器件,提高其技术性能,继续发挥其效益。一、改造方案的拟定北京广播器材厂早期生产的GSZ-1型300WⅢ波段电视差转机共有三个大立柜(电控、逻辑单元立
In many counties, municipal television stations or television stations, a considerable part of them are domestic machines produced in the 1970s and 1980s. My GSZ-1 type 300W TV transfer machine is the early production of the Beijing Broadcasting Equipment Factory meter band machine, is 85 years of operation to use. The poor turnaround work for many years, circuit aging, high failure rate, technical performance is unstable, difficult to maintain the normal broadcast, broadcast on the safety of television programs can not do. To further improve the broadcast quality, we must carry out solid-state transformation. According to the current situation of insufficient funds for small-scale maintenance, we can solve the potential viable local technological improvements by spending less money, digging out the potential of old equipment and using new technologies and new devices launched by television today to improve their technical performance, Continue to play its effectiveness. First, the transformation program formulation Beijing Broadcasting Equipment Factory early production of GSZ-1 type 300W Ⅲ band television transfer machine a total of three large cabinets (electric control, logic unit