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ADV7125BCPZ170-RL Datasheet(PDF) 10 Page - Analog Devices |
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ADV7125BCPZ170-RL Datasheet(HTML) 10 Page - Analog Devices |
10 / 16 page ADV7125 Rev. C | Page 10 of 16 TERMINOLOGY Blanking Level The level separating the SYNC portion from the video portion of the waveform. Usually referred to as the front porch or back porch. At 0 IRE units, it is the level that shuts off the picture tube, resulting in the blackest possible picture. Color Video (RGB) This refers to the technique of combining the three primary colors of red, green, and blue to produce color pictures within the usual spectrum. In RGB monitors, three DACs are required, one for each color. Sync Signal (SYNC) The position of the composite video signal that synchronizes the scanning process. Gray Scale The discrete levels of video signal between reference black and reference white levels. An 8-bit DAC contains 256 different levels. Raster Scan The most basic method of sweeping a CRT one line at a time to generate and display images. Reference Black Level The maximum negative polarity amplitude of the video signal. Reference White Level The maximum positive polarity amplitude of the video signal. Sync Level The peak level of the SYNC signal. Video Signal The portion of the composite video signal that varies in gray scale levels between reference white and reference black. Also referred to as the picture signal, this is the portion that can be visually observed. |
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