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Figure 3-4. Grid Pattern Panel
Adjust the Vertical Centering
Adjust the Vertical Centering control on the display until the grid is centered on the
screen between the top and bottom edges of the screen. If you cannot get the grid
centered on the screen, contact your Help Desk.
Adjust Convergence
Verification
Look at the center of the grid. Turn the Vertical Static Convergence control until
the horizontal lines are white. Turn the Horizontal Static Convergence control until
the vertical lines are white.
If
you cannot obtain the proper convergence, contact your Help Desk.
Press "q" followed by ENTER until the color bar test pattern reappears and observe
the following.
• The color bars should be in the proper order and be bright and crisp.
• The low frequency area at the top should be free of interference and the transi-
tion of white to black or black to white should be sharp.
• The gray scale shows 6 clearly defined shades of gray between black and white.
• The burst pattern will show clear vertical fine lines at the lower right and the
single pixel dots are clearly defined.
CHAPTER 3. Operating the 6091 Color Displays
3-5
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