Diamond View DV159 Manual page 20

alternating black and white vertical lines that are each 1 pixel wide. There
should be no vertical noise bands visible within the image. The centre section
will clearly show the alternating black and white lines or a uniform level of
noise will appear across the image once the clock adjustment is correct.
Close the clock submenu by pressing Exit.
6. Select Horizontal Position and press Enter.
7. Adjust the horizontal position so that the image is centred. Its width should be
the same as the visible width of the screen. Press Exit.
8. If some noise or distortion is still visible in the centre section of the test
pattern, select Phase and press Enter.
9. Adjust the Phase of the monitor's sampling clock to optimise the displayed
image. The alternating black and white lines should be clearly visible. Press
Exit.
10. Press Exit twice to close the OSD menu and save your changes.
If you are still not satisfied with the result, try repeating the procedure using a
graphics signal that has a different refresh rate.
Please Note:
You must use one of the factory modes. If the Auto button is not working, or the
NON PRESET MODE message is shown on the OSD you are not using one of
the supported modes. If you are having difficulties generating a supported mode,
ask your computer dealer or the distributor or manufacturer of your graphics card
for assistance.
The procedures described in this chapter should be performed for every
resolution and type of graphics signal that you wish to use. For example, if a
particular application requires a resolution of 800 x 600 pixels, but all other
applications use the monitor's native resolution, you will need to display the test
pattern and make adjustments twice.
The monitor will remember your settings and use them whenever you turn the
monitor on. Note that you may need to re-adjust the monitor if it is connected to a
different computer or if the computer's graphics adaptor card is replaced.
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