Time from valid output on signal to relay energization by module.
信号时输出的有效中继模块通电了。
In addition the system not only can test time of the time relay, but also can test the signal frequency.
该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。
In addition the system not only can test time of the time relay, but also can test the signal frequency.
该系统除了能够测量时间继电器时间段外，还可以测试信号的频率等。
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