发射机同轴倒换开关故障分析与处理  

Fault Analysis and Treatment of Transmitter Coaxial Switch

作　　者：汪家祺 沈斌 王敏海 吴星辰 Wang Jiaqi;Shen Bin;Wang Minhai;Wu Xingchen(Suzhou Radio and Television Station,Jiangsu 215000,China)

机构地区：[1]苏州市广播电视总台,江苏215000

出　　处：《广播与电视技术》2023年第1期93-95,共3页Radio & TV Broadcast Engineering

摘　　要：同轴倒换开关是发射机主备切换,保障安全播出的关键设备。本文介绍了我台广播同轴开关倒换未到位导致开关损坏的问题。通过对倒换电机及其控制电路的分析测试,以及对工作状态良好的电视同轴开关的对比分析,发现问题在于同轴开关与控制单元失配。Coaxial change-over switch is the key equipment for switching between main and standby transmitters to ensure safe broadcasting. This paper introduces the problem that happened in our radio station in that the coaxial switch did not reach the designed position, resulting in the damage of the switch. Through the analysis and test of the switching motor and its control circuit, as well as the comparative analysis of the TV coaxial switch in good working condition, it is found that the problem lies in the mismatch between the coaxial switch and the control unit.

关 键 词：同轴开关 自动倒换 倒换电机控制 

分 类 号：TN934.81[电子电信—信号与信息处理]