DAM 10kW数字调幅广播发射机电声指标的调整和维护  

Adjustment and Maintenance of DAM 10 kW Digital AM Broadcast Transmitter Electroacoustic Indexes

作　　者：张长兴 ZHANG Changxing(Guizhou Radio and Television Bureau 896,Liupanshui 553000,China)

机构地区：[1]贵州省广播电视局八九六台,贵州六盘水553000

出　　处：《电声技术》2022年第7期56-58,共3页Audio Engineering

摘　　要：随着数字广播技术应用的不断发展,DAM 10 kW数字调幅广播发射机在实现数字幅度调整方面的应用越来越常见。在数字调幅广播发射机的应用中,非线性失真、频率响应、信噪比这三大指标的检测与维护,是发射机常规维护的基础和重点内容。对此,结合DAM 10 kW数字调幅广播发射机应用的实际环境和要求,在概括介绍发射机运行原理的基础上,对三大电声指标的内容以及指标调整与维护方面的策略进行分析探讨,为数字调幅广播发射机电声指标的改善和信号发射质量的提升提供相关内容参考。With the continuous development of the application of digital broadcasting technology, the application of DAM 10 kW digital AM broadcasting transmitter in realizing digital amplitude adjustment is becoming more and more common. In the application of digital AM broadcasting transmitter, the detection and maintenance of three major indicators, including nonlinear distortion, frequency response, and signal-to-noise ratio, are the basis and key content of routine maintenance of the transmitter. Combined with the actual environment and requirements of the application of DAM 10 kW digital AM broadcast transmitter, on the basis of an overview of the operation principle of DAM 10 kW digital AM broadcast transmitter, the content of its corresponding three electroacoustic indicators and the strategies for indicator adjustment and maintenance are carried out. This paper analyzes and discusses, and provides relevant content reference for the improvement of the electro-acoustic indicators of digital AM broadcast transmitters and the improvement of signal transmission quality.

关 键 词：数字调幅 广播发射机 电声指标 

分 类 号：TN838[电子电信—信息与通信工程]