Teledyne 980 DP1.4, User Manual, Page: 484 / 507

980 DP 1.4 Video Generator / Analyzer - User Guide Rev. A1
Page 484 June 16, 2017
In order to perform this test, you must have a way of turning off the red and green guns in the monitor under test.
Turning off the red and green video components of the 801GX generator
’s video output will not work for this test.
This test uses the upper and central color bars. Switch off the red and green guns on the monitor. This will produce
four blue bars, separated by black bars. Adjust the chroma phase so that the brightness of each of the two central
blue bars is uniform over the entire bar. The phase is correct when the bottom 10% of each bar is the same
brightness as the rest of the bar.
16.161.12 Test
Visual black level adjustment.
16.161.13 Method
This test uses the lower right hand portion of the image. Reduce the black level until the gray bar disappears.
Slowly increase the black level until the bar just becomes clearly visible.