输出信号，在衰减和消除衰减后，被检测脉冲 ≤ 0.3 ms叠加，该脉冲在出现干扰时缺失，从而在几乎所有故障情况下，都能识别出干扰问题。
ESD：EN 61000-4-2：不允许在电位计调整螺栓上进行放电。安装和操作只能由经过培训的专业人员进行。
The potentiometer does not have a fixed stop, but can be turned endlessly without destroying anything.
If no change in the switching signal is detected, the potentiometer should be turned forwards or backwards until a signal change occurs at the output.
