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Glossary: IRE

Institute of Radio Engineers, North America. The term is also used as a video level measurement unit. In the American NTSC system "0" IRE reference is the blanking level, the sync tip is at -40 IRE and the peak white is at 100 IRE. Therefore, a standard 1-Volt peak to peak video level is equal to 140 IRE units.

Interface
Interlaced Video
ITU-R BT.601-2

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