CATV系统交扰调制干扰演示实验方法探究

Methods Exploration for CATV System Cross Modulation Interference Demonstration Experiment

针对教育技术等相关专业在电视系统与传输类课程中难以通过实验呈现交扰调制干扰现象的问题,利用简单设备搭建了一套演示交扰调制干扰现象的实验教学系统,能直观真实地演示CATV系统交扰调制干扰现象,并能通过观察电视屏幕对交扰调制干扰进行有效的控制,解决了困扰多年的教学难题。

It is difficult for TV related majors, such as educational technology, to present cross modulation interference in the course of ＂TV system and transfer＂. In order to solve this problem, we construct a set of experimental teaching system by simple devices, which intuitively demonstrates cross modulation interference in CATV system and controls effectively cross modulation interference through the observation of the TV screen. Thus the teaching problems have been solved.