Diamond View DV150, User Manual

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In some rare cases, the screen may show a small amount of noise. This
may be caused by non-standard signal frequencies from the VGA card.
It is not a defect. You can improve it by automatic adjustment or by
manually adjusting the Clock Phase and Pixel Frequency in the image
menu.
)
When shutting down the computer system or turning off the monitor,
some interference lines may appear on your screen. This is a normal
situation.
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To extend the product life, we suggest you use the power saving
function of your computer system.