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抖动测量仪是对录音机、电唱机、电影机、录像机等设备进行抖动测量的专用仪表。为确保收、录、放机的质量,抖动校准是一个重要的技术指标。通过对 DD3型抖动测量仪与 BE3型频偏测量仪的比较可看出,DD3只比 BE3少一级射频变频器部分,故它又是一个无变频级输入的低载频频偏测量仪。其抖动值 D 是频偏△f 值与一个预约定值3150Hz
Jitter measuring instrument is a tape recorder, record player, movie machines, video recorders and other equipment for jitter measurement of special instruments. To ensure the quality of recording, recording and playback, jitter calibration is an important technical indicator. By comparing the DD3 jitter meter with the BE3 frequency offset meter, we can see that the DD3 is only one RF inverter less than the BE3, so it is a low carrier frequency offset meter with no frequency conversion stage input. The jitter value D is the frequency deviation △ f value and a predetermined value 3150Hz