Picture_line-up_generation_equipment

Picture line-up generation equipment

Picture line-up generation equipment

Equipment to generate test patterns used by televisions

For televisions the picture line-up generation equipment (PLUGE or pluge) is a greyscale test pattern used in order to adjust the black level and contrast of the picture monitor. Various PLUGE patterns can be generated, the most common consisting of three vertical bars of super-black, normal black, and near-black and two rectangles of mid-gray and white (sometimes these are measured in IRE). These three PLUGE pulses are included in the SMPTE color bars (at the bottom and near the right) used for NTSC, PAL, and SÉCAM.

A Pluge signal as viewed on a monitor
SMPTE colour bars showing a pluge signal in the bottom half second square from the right
  • S. F. QUINN; C. A. SIOCOS (September 1967), "Pluge Method of Adjusting Picture Monitors in Television Studios - A Technical Note", Journal of the SMPTE, 76 (9): 925, doi:10.5594/J10955
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