980 DP Video Generator - User Guide Rev. A4
Page 222 July 14, 2014
11.32 CirclesS
11.32.1Description
Special test image developed per customer specifications. In the primary version (shown below), the image
consists of eight small white circles on a black background. The circles are positioned in the corners of the active
video area and centered on each edge of the active video area. The secondary version inverts the image to black
circles on a white background.
11.32.2Purpose
This pattern is specified by some monitor manufacturers for checking and adjusting video scan size, linearity, and
over scanning.
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