Procedures and installations for electromagnetic compatibility (EMC) measurements

The methods and procedures for EMC measurements have been standardized. However, there are differences between the standards established by the individual states. These differences can be very significant because the underlying philosophies differ. The German standards are based on an interference model which was developed for this application, while the origin of the U.S. EMC MIL standards is related to the conduction of measurements. Different types of signals are discussed, taking into account sinusoidal signals, periodic signals with pulse sequences, aperiodic signals, and other signals, such as modulated high-frequency signals. The conduction of EMC measurements in the case of electrical apparatus is described, and measurements involving systems are considered. Attention is also given to suitable approaches which can be employed in investigations conducted in a search for the sources of electromagnetic incompatibility.