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2 SCREEN ADJUSTMENT
Convergence
Displayed characters and images may appear fuzzy or have tinges of red,
green, or blue if the electron beams do not converge correctly. These can be
adjusted by the convergence adjustment feature in the ScreenManager.
What is convergence?
Convergence is the monitor’s ability to precisely illuminate specific
phosphors and line them up properly in order to produce pure color.
In order to properly adjust convergence, it is best to have an image that
makes it easy to see any convergence error. A black background with
white letters or lines is the best. This could be a DOS text mode or an
image created with a “paint” program.
When adjusting convergence, look at the adjustment across the whole
screen. When adjusting horizontal convergence, look at the left and right
edges of vertical lines or characters. When adjusting vertical
convergence, look at the top and bottom edges of horizontal lines or
characters. Proper adjustment is when the effect of red and blue tinges are
minimized.
• The convergence adjustment adjusts the entire screen. It is not
possible to limit adjustment to specific screen areas.
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