摘要
以国内外全固态电视发射机主流机型为例,重点分析了激励器视频变中频单元的工作原理,详细探讨了视频信号、调制信号、载波信号和偏置电压对图像中频输出的影响,并结合发射机图像输出的常见故障提出了判断思路和解决方法,为维护全固态电视发射机提供可借鉴的方案。
Based on the popular styles of Solid-State TV transmitter, the exciter is analyzed. The influence of video signal, modulated signal, the principle of intermediate frequency Modulation unit in carrier wave signal and bias voltage on image intermediate frequency output is discussed. Aiming at familiar malfunctions of the image output of the transmitter, some methods of judgment and solution are put forward to provide reference for Solid-State TV transmitter＇s maintenance.
出处
《电视技术》
北大核心
2006年第5期85-87,共3页
Video Engineering
关键词
视频
中频
调制
发射机
激励器
video
intermediate frequency
modulation
transmitter
exciter
