Dell E1916HV 19" 16:9 LCD Monitor - Manual (Page 33)

Operating the Monitor 33
Aspect Ratio Adjusts the image ratio as Wide 16:9, 4:3, or 5:4.
NOTE: Wide 16:9 adjustment is not required at maximum preset
resolution 1366 x 768 (for E1916HV) or 1600 x 900 (for E2016HV)
or 1920 x 1080 (for E2216HV).
Horizontal
Position
Use or the buttons to adjust image left and right. Minimum
is '0' (-). Maximum is '100' (+).
Vertical Position
Use the or buttons to adjust image up and down. Minimum
is '0' (-). Maximum is '100' (+).
Sharpness
This feature can make the image look sharper or softer. Use
or to adjust the sharpness from '0' to '100'.
Pixel Clock The Phase and Pixel Clock adjustments allow you to adjust your
monitor to your preference. Use or buttons 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.
Reset Display Select this option to restore default display settings.