HP VH240a User Manual

Optimizing image performance (analog input) 17
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 OSD 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 optical 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 to open the OSD menu, and then select Image Control > Clock
and Phase.
2. Use the buttons on the monitor to eliminate vertical bars. 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 to open the OSD menu, and then select Image Control > Clock
and Phase.
2. Press the buttons on the monitor to eliminate flickering or blurring. Flickering or blurring may not be
eliminated, depending on the computer or graphics controller card installed.
To correct screen position (Horizontal Position or Vertical Position):
1. Press the Menu button on the monitor to open the OSD menu, and then select Image Position.

HP VH240a Specifications

General

3D	No
Pixel pitch	0.274 x 0.274 mm
Screen shape	Flat
Display diagonal	23.8 \
Display technology	LED
Native aspect ratio	16:9
Viewable size, vertical	296.4 mm
Contrast ratio (dynamic)	5000000:1
Contrast ratio (typical)	1000:1
Display number of colors	16.78 million colors
Viewable size, horizontal	527 mm
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 800 (WXGA), 1440 x 900 (WXGA+), 1600 x 900, 1680 x 1050 (WSXGA+)
On/off switch	Yes
Pivot angle	0 - 90 °
Tilt angle range	-5 - 30 °
Panel mounting interface	100 x 100 mm
Product color	Black
Country of origin	China
Market positioning	-
Sustainability certificates	EPEAT Silver, ENERGY STAR
AC input voltage	100 - 240 V
Power consumption (off)	0.3 W
Annual energy consumption	28 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	19 W
RMS rated power	4 W
Number of speakers	2

Weight and Dimensions

Depth (with stand)	218 mm
Width (with stand)	539 mm
Height (with stand)	499 mm
Depth (without stand)	46 mm
Height (without stand)	323 mm
Weight (without stand)	4660 g