• 按键脉冲通过条线上按键而不是旋转脉冲拨号信令方法

    Key Pulsing is a method of signaling by depressing keys on a line otherwise arranged for rotary pulse dialing.

    youdao

  • 控制通电数码管显示按键输入正常: (1输出LED指示灯没有电磁脉冲动作, 则有可能SD-M-3002电路损坏。

    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.

    youdao

  • 控制通电数码管显示按键输入正常: (1输出LED指示灯没有电磁脉冲动作, 则有可能SD-M-3002电路损坏。

    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.

    youdao

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