... series-mode rejection ratio，串模抑制比 series-mode signal，串模信号 series-mode voltage，串模电压 ...
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如果不采取措施将叠加到信号上的串模噪声减到最小，串模噪声会对测量产生严重的影响。
Normal mode noise can seriously affect measurements unless steps are taken to minimize the amount added to the desired signal.
这个相加的电压主要为电源频率的信号，其对于电压表读数的影响决定于电压表的串模抑制能力。
This added voltage is mainly power line frequency and its effect on the voltmeter reading will depend upon the normal-mode rejection capability of the meter.
如图1 - 5所示，串模噪声是叠加到希望的输入信号上的误差信号。
Normal mode noise is detected as a peak noise or deviation in a DC signal.
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