411 REFERENCE · Wiktionary
IRE unit
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
IRE (unit)
Etymology
Named after the Institute of Radio Engineers.
Noun
en television A unit used in the measurement of composite video signals. A value of 100 IRE is defined to be +714 mV in an analog NTSC video signal.
en 1966 Rodger J. Ross Television Film Engineering 331 At the same time the picture blacks may be reproduced at levels as high as 20 or 30 IRE units.