Press A / M, out of the valve angle calibration, ether the no input signal valve position calibration process.
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；
This is the least efficient method of amplification, because the output devices are dissipating maximum power with no input signal.
这是最有效的方法，扩增，因为输出设备的最大功率耗散没有输入信号。
Adjustments have to be done at an idling condition with no signal input.
调节器必须在没有输入信号的空闲条件下进行。
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