With the limitation to the ground capacitance by inverter, it is difficult to suppress the severe common-mode noise by large CM filter.

由于逆变器电源对输出接地电容的限制，对严重的共模电磁干扰难以用大容量的共模滤波器抑制共模噪声。

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Electromagnetic interference (EMI) in high-speed digital circuit is mainly generated by Common-mode (CM) noise, and the CM inductance is responsible for CM noise magnitude.

共模噪声是高速数字电路产生电磁干扰的主要原因，而共模电感又是共模噪声大小的决定因素。

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The measurement is made by injecting a differential mode signal (DM) into a twisted pair, then measuring the common mode signal (CM) returned on that same twisted pair.

翻译：测量是通过向双绞线注入差模信号(DM)，然后测量同一对双绞线返回的共模信号(CM)。

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