After the control device is powered on, nixie light display and key input is normal: (1)Output LED indicator is not lit and electromagnetic pulse valve does not work.
控制仪通电后数码管显示和按键输入正常： （1）输出LED指示灯没有亮， 电磁脉冲阀也不动作， 则有可能SD-M-3002电路损坏。
This article discusses the research and special usage of a sound and light indicator of a kind of logic pulse probe.
本文介绍了一种声和光指示的瞬间电脉冲检测器的研制及其特殊用途。
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