Quantum Data 980 DP, User Manual

Page: 223 / 389

980 DP Video Generator - User Guide Rev. A4
Page 223 July 14, 2014
11.33 ColorBar
11.33.1Description
The primary version (shown below) has 16 full-height vertical color bars. 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.
Note: When outputting digital video, 33% Gray changes to 50% Gray, and 67% Gray becomes either Black or
some gray level depending on how the display interprets the video information.
11.33.2Test
Verify that all video channels are functional.
11.33.3Purpose
To verify that none of the video channels are bad or connected incorrectly.
11.33.4Method
Compare the sequence of color bars with the table. Missing bars may indicate a dead or unconnected channel. The
transition between the bars should be sharp and distinct. Each bar should also be uniform in color and intensity
across its entire width. Non-uniformity may indicate problems with the response of the video amplifiers. If all the
bars are present but in the wrong order, one or more inputs may be swapped.