Electromagnetic compatibility (EMC) testing measures the ability of equipment or systems to function satisfactorily in their electromagnetic environment without introducing intolerable electromagnetic disturbance to anything in that environment.

Electromagnetic compatibility (EMC) is unwanted generation, transmission and reception of electro-magnetic energy with reference to the unwanted effects (Electromagnetic interference, or EMI) that such energy may induce. The purpose of EMC is the appropriate operation, in the same electro-magnetic(EM) environment, of various equipment’s that use electro-magnetic phenomena, and the avoidance of any interference effects.

Dealing with electromagnetic interference (EMI) appropriately can be one of the most problematic design challenges to modern product development. When proper electromagnetic compatibility design practices have not been implemented in the design process, significant impact will be seen both in the functional reliability and the product’s inability to properly co-exist in its intended usage environment.