Chapter 3 Adjusting the Video Display
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Exiting from the Monitor Adjustment Program
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To exit from the Monitor Adjustment program:
•
For Windows, click the right mouse button or press the Esc key.
•
For MS-DOS, press any key.
Adjusting the Clock and Phase Values
The Clock value defines the frequency of the pixel sampling clock. It
is important that this frequency closely match the original pixel clock
generating the analog video signal.
The Phase value synchronizes the relative phase of the pixel sampling
clock to the incoming video signal.
If the Clock or Phase value is incorrect, the screen image may display
one or more vertical bars (noise). The screen image may also flicker
or seem out of focus.
Because both the Clock value and the Phase value can affect the noise
level, the basic rule for eliminating noise is as follows:
•
First, adjust the Clock value until the noise is uniform across the
entire screen. (You may not be able to eliminate the noise by
adjusting only the Clock setting.)
•
Then, adjust the Phase setting to eliminate the noise. The Phase
value synchronizes the clock to the incoming video signal.
