Optimizing Image Performance (Analog Input) - HP ProDisplay P222c User Manual

Optimizing Image Performance (Analog Input)

Two controls in the on-screen display can be adjusted to improve image performance: Clock and Phase (available
in the main menu).
NOTE: The Clock and Phase controls are adjustable only when using an analog (VGA) input. These controls are
not adjustable for digital inputs.
The Clock must first be set correctly since the Phase settings are dependent on the main Clock setting. Use these
controls only when the auto-adjustment function does not provide a satisfactory image.
• Clock—Increases/decreases the value to minimize any vertical bars or stripes visible on the screen
background.
• Phase—Increases/decreases the value to minimize video flickering or blurring.
NOTE: When using the controls, you will obtain the best results by using the auto-adjustment pattern software
utility provided on the disc.
When adjusting the Clock and Phase values, if the monitor images become distorted, continue adjusting the
values until the distortion disappears. To restore the factory settings, select Yes from the Factory Reset menu in
the on-screen display.
To eliminate vertical bars (Clock):
1. Press the Menu button on the monitor's front panel to open the OSD Menu, and then select Image Control >
Clock and Phase > Clock.
2.
Press the
buttons slowly so that you do not miss the optimum adjustment point.
3. After adjusting the Clock, if blurring, flickering, or bars appear on the screen, proceed to adjust the Phase.
To remove flickering or blurring (Phase):
1. Press the Menu button on the monitor's front panel to open the OSD Menu, and then select Image Control >
Clock and Phase > Phase.
2. Press the
or blurring may not be eliminated depending on your computer or graphics controller card installed.
+ (Plus) or – (Minus) buttons on the monitor's front panel to eliminate vertical bars. Press the
+ (Plus) or – (Minus) buttons on the monitor's front panel to eliminate flickering or blurring. Flicking
Optimizing Image Performance (Analog Input) 25