EMC testing, also known as Electromagnetic Compatibility (EMC), refers to the comprehensive assessment of the electromagnetic interference (EMI) and the anti-interference ability (EMS) of electronic products in the electromagnetic field. It is one of the most important indicators of product quality. The measurement of electromagnetic compatibility consists of the testing site and testing instruments.

The purpose of EMC testing is to detect the impact of the electromagnetic radiation generated by electrical products on the human body, the power grid in public places, and other electrical products that are operating normally.