E

E 1. Symbol for voltage or emitter. 2. Abbreviation for illumination.

E and M leads In a signaling system, the output and input leads, respectively.

E- and M-lead signaling Communications between a trunk circuit and a separate signaling unit by way of two leads: an M lead over which battery or ground signals are transmitted to the signaling equipment, and an E lead over which open or ground signals are received from the signaling unit.

early failure A failure that occurs during the initial life phase and is generally caused by initial production, assembly, test, installation, or commissioning errors.

early-failure period Also called debugging period, burn-in period, or infant-mortality period. The period of equipment life, starting immediately ...

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