DCM50kW中波发射机循环调制编码板工作原理及调试维护  

Working Principle and Debugging Maintenance of DCM50kW Medium Wave Transmitter Cyclic Modulation and Coding Board

作　　者：赖少锋 LAI Shaofeng(Guangdong province 721 units,Heyuan 517001,China)

机构地区：[1]广东省721台,广东河源517001

出　　处：《电视技术》2023年第8期119-122,129,共5页Video Engineering

摘　　要：随着广播电视技术的发展,数字循环调制技术广泛运用于新型中波发射机中,不仅使发射机具有高可靠性的运行状态,而且大大地提高了整机效率。以广东省721台使用的哈尔滨广播器材有限公司生产的DCM50kW中波广播发射机为例,介绍循环调制编码板的工作原理及作用,详细阐述循环调制编码板的整个调试过程,对调试过程中遇到的实际问题进行分析,提出解决问题的思路与措施,总结循环调制编码板在日常运行中的典型故障处理方法。With the development of radio and television technology,digital cycle modulation technology is widely used in the new medium wave transmitter,which not only makes the transmitter have high reliability running state,but also greatly improves the efficiency of the whole machine.This paper takes the DCM50kW medium wave broadcast transmitter produced by Harbin broadcasting equipment Co.,Ltd.used by Guangdong province 721 units as an example,introduces the working principle and function of the cyclic modulation coding board,describes the whole debugging process of the cyclic modulation coding board in detail,analyzes the practical problems encountered in the debugging process,and puts forward the ideas and measures to solve the problems.The typical fault handling methods of cyclic modulation coding board in daily operation are summarized.

关 键 词：循环调制 数字音频 编码 

分 类 号：TN838[电子电信—信息与通信工程]