Hatch64W - Quantum Data 980 DP User Manual

980 DP Video Generator - User Guide Rev. A4

11.89 Hatch64W

11.89.1Description
This is a crosshatch pattern that may be called for by some manufacturers' test procedures. The primary version
(shown below) consists of an 8x8 white crosshatch on a black background. A white rectangular patch is added in
the center. The secondary version inverts the image to black lines and box on a white background.
11.89.2Purpose
Method This is a general purpose test image that can be used to check and adjust video scan linearity and
geometry, and color convergence. The large white rectangle also allows for checking a display's high voltage
regulation. This is done by observing the vertical lines at the left and right edges of the image. They should be fairly
straight and not pull in the area of the white rectangle.
Page 282 July 14, 2014