电视传输系统中,噪波、线性失真和非线性夫真是影响电视图象质量的三大因素。噪波对电视图象的最终影响即表现为影响观察、损伤图象、破坏同步。因此,噪波电压的测量是电视传输系统中极为重要的测量项目之一。随着对电视图象传输质量的要求越来越高,噪波电压的定量测量和定性分析更日趋重要。 In television transmission systems, noise, linear distortion and nonlinearity are the three major factors affecting the quality of television pictures. The final impact of noise on the television image is manifested as impact observation, damage to the image, destruction of synchronization. Therefore, the measurement of the noise voltage is one of the most important measurement items in the television transmission system. With the increasing demand for the quality of television image transmission, quantitative measurement of noise voltage and qualitative analysis are becoming more and more important.