Agilent Technologies 8753ES Option 011 Service Manual page 305

Table 10-10 Test-Patterns
Test Test Name
Number
77 Test Pat 12
78 Test Pat 13
79–80 Test Pat
14–15
Chapter 10
Displays a repeating gray scale for troubleshooting, using an oscilloscope. It is
similar to the 16 step gray scale but is repeated 32 times across the screen.
Each of the 3 outputs of the video palette will then show 32 ramps (instead of
one staircase) between each horizontal sync pulse. This pattern is used to
troubleshoot the pixel processing circuit of the A19 GSP board.
Displays a convergence pattern for measuring the accuracy of the color
convergence of the external monitor.
Displays crosshatch and inverse crosshatch patterns for testing color
convergence, linearization alignment. This is useful when aligning the LCD
display in the bezel.
Service Key Menus and Error Messages
Description
Service Key Menus
10-15