按下A/M，退出阀门转角标定，进入无信号输入阀门位置标定进程；

Press A / M, out of the valve angle calibration, ether the no input signal valve position calibration process.

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这种异步与门与常用的同步型爆炸与门相比，具有对两个输入信号无同步性和无时序要求的特点，扩展了与门的应用范围，提高了正常作用的可靠性。

Compared with synchronous explosive and gate, it requires no synchrony and time sequencing to its two inputs, thus extends its application area and improves its reliability of normal function.

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一个无反馈的开环（直接）系统直接产生对于输入信号的输出响应。

An open-loop (direct) system operates without feedback and directly generates the output in response to an input signal.

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