IBM 4820 Planning, Installation And Service Manual page 62

Adjusting the image
Using the 4820 Video Quality Test Pattern program
The 4820 Video Quality Test Pattern program provides additional support when
the display image is unsatisfactory.
When to use: Use this file only if you cannot obtain satisfactory results using the
Auto Adjust and Manual Adjust features of the OSD menu. You can use Auto
Adjust frequently because it automatically fine tunes your settings based on your
PC's video signal.
DOS users: To run the 4820 Video Quality Test Pattern program for DOS users,
follow these steps:
1. Download the 4820Patt.exe program from the support Web site:
2. Boot the system by using the diskette, or from a DOS command prompt (full
3. Press the (−) and plus (+) buttons to open the OSD menu.
4. Select Auto Adjust.
5. After adjustment is complete, press any key on the keyboard. A 720 x 400 text
6. Select Auto Adjust.
7. When complete, press the minus (−) and plus (+) buttons at the same time to
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4820 Planning, Installation and Service Guide
This section does not apply to the Models 1FR and 1FD.
www.ibm.com/solutions/retail/store, then click Support, and create a diskette.
This file generates a special image pattern.
screen), run the DOS_PAT.exe. A 640 x 480 text pattern appears.
pattern appears.
exit the OSD menu and save your adjustments.
Notes:
a. If the screen flickers, repeat the steps 3 through 7, or select Manual Adjust.
b. Press any key to exit a special image pattern.
January 14, 2005