Dell S2740L User Manual page 37

Reset Color Setting Reset your monitor color settings to the factory settings.
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Display Settings Use the Display Settings to adjust image.
Aspect Ratio Adjusts the image ratio to Wide 16:9, 4:3, or 5:4.
Horizontal Position
Use or to adjust the image left or right. Minimum is '0' (-). Maximum is '100' (+).
Vertical Position
Use or to adjust the image up or down. Minimum is '0' (-). Maximum is '100' (+).
NOTE: Horizontal Position and Vertical Position adjustments are only available for "VGA" input.
Sharpness
This feature can make the image look sharper or softer. Use
Pixel Clock The Phase and Pixel Clock adjustments allow you to adjust your monitor to your preference.
Use or to adjust for best image quality.
Phase If satisfactory results are not obtained using the Phase adjustment, use the Pixel Clock (coarse) adjustment and then use Phase (fine), again.
NOTE: Pixel Clock and Phase adjustments are only available for "VGA" input.
Dynamic Contrast Allows you to increase the level of contrast to provide sharper and more detailed image quality.
Press the button to select the Dynamic Contrast "On" or "Off" .
or to adjust the sharpness from '0' to '100'.