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980 DP 1.4 Video Generator / Analyzer - User Guide
Rev. A1
16.68 GrayBar
16.68.1Description
The primary version (shown below) has 16 full-height vertical graybars. The intensity of the bars is shown below.
The secondary version splits the field into a top and bottom half. The bars in the bottom half of the screen are in
reverse order.
16.68.2Test
Video color tracking (color monitors)
16.68.3Purpose
To verify that a color monitor accurately reproduces colors at all intensities.
16.68.4Method
Perform the Brightness Control Adjustment and Brightness Uniformity tests first.
Changes in brightness from bar to bar should be uniform. All of the bars should appear as an untinted gray at all
levels.
16.68.5Test
Video gain linearity (monochrome monitors)
16.68.6 Purpose
To check the video linearity (grayscale) modulation)
16.68.7Method
Perform the Brightness Control Adjustment and Brightness Uniformity tests first.
Changes in brightness from bar to bar should be visible and uniform.
Page 378
June 16, 2017
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