Electromagnetic interference control

In electrical systems, such as telecommunications, power electronics, industrial electronics, power engineering; electromagnetic interference control is the control of radiated and conducted energy such that emissions that are unnecessary for system, subsystem, or equipment operation are reduced, minimized, or eliminated. Note: Electromagnetic radiated and conducted emissions are controlled regardless of their origin within the system, subsystem, or equipment.

Source: Wikipedia — Electromagnetic interference control (CC BY-SA 4.0)