Telecom
Telecommunications equipment, by nature of its application in the telecommunications network, may be exposed to one or more sources of electromagnetic energy. The test equipment in this category is intended to help avoid equipment damage and malfunction because of lightning, 50/60-Hz commercial power fault conditions, Electrostatic Discharge (ESD), Electrical Fast Transient (EFT), Electromagnetic Interference (EMI), operation in the presence of a dc potential difference, and operation in a steady-state induced voltage environment.