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980 DP 1.4 Video Generator / Analyzer - User Guide
Rev. A1
16.25 Check511
16.25.1Description
Consists of five small boxes in the corners and at the center of the active video. The boxes are on a black
background. Each box consists of alternating black and white pixels that form a very fine checkerboard. The
secondary version inverts the image, creating a white background. The colors of the individual pixels in the boxes
also are inverted.
16.25.2Test
Verify monitor resolution.
16.25.3Purpose
The resolution of your monitor should meet or exceed the design specifications.
16.25.4Method
First adjust the brightness, contrast, and focus to their correct settings. You should be able to see individual and
distinct pixels in each of the boxes. Failure to see distinct pixels may indicate you have a defective video amplifier,
focus correction circuit, or picture tube.
Note: If multi-colored areas appear on a mask-type color picture tube, you may have a problem with convergence
or you may be exceeding the resolution of the picture tube.
Page 333
June 16, 2017
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