电磁兼容EMC设计的目的就是想办法使自己设计或生产的电子设备产生各种干扰信号的幅度符合别人的要求；同时还要想办法让自己设计或生产的电子设备在受到其它电子设备产生干扰的情况下还能正常工作。因此，EMC标准一般都是强制性的。-Electromagnetic Compatibility EMC design is to seek ways to make their own design or production of a variety of electronic equipment generated interference signal margin requirements in line with the others　but also to find ways to help their own design or production of electronic equipment by the other electronic devices interfere with the circumstances can work properly. Therefore, EMC standards are generally mandatory.