目前在使用中的彩色电视副载波校频采用直接测频法、分频测周期法和比相法等,它们各有优缺点。本文介绍的方法是,借助于数字频率计的时间间隔测试功能的时差法测量彩色副载波校频。其原理类似于比相法,它能在 At present, the use of color TV subcarrier frequency measurement using frequency measurement method, frequency measurement cycle method and phase method, etc., which have their own advantages and disadvantages. The method described in this article measures color subcarrier frequency by means of the time difference method of the digital frequency meter’s time interval test function. The principle is similar to the phase method, it can be