User`s manual

GDR 12 Series User’s Manual 4
4. Image Control and Adjustment
There are two important steps in order to ensure that the best possible
image quality is now obtained:
4.1 Select the correct resolution and refresh rate.
The GDR 12 is intended to run at a resolution of 800x600 pixels.
Although the unit can display in full screen mode at 640x480,
we strongly recommend you now set the resolution to 800x600.
• Move the slider bar until the screen resolution is 800x600.
• Change the refresh rate to 60 Hz
• Set the number of colors to 256 k
• Save settings before exiting.
4.2 Run the On-Screen Auto Adjust Utility using the buttons on the front of
the monitor:
• Click the “Menu” Button once. The On-Screen Menu will now pop up and
will already be highlighting the “Auto Adjust” option.
• Click “Select.”
• The display will now resize and reposition until an optimal image is
achieved.
•Wait five seconds and the On-Screen Controls will disappear.
Important Note: The panel used in the GDR 12 can operate between
a range of 60 and 75 Hz. The best frequency will depend on the driver card
in the PC. If at this stage there is any “noise” on the screen, we recommend
the following:
•Try increasing the refresh rate above 60Hz. Do not exceed 75 Hz.
• Fine-tune the Brightness, Contrast and Sharpness functions using
the On-Screen Control.
4.3 The GDR 12 is an extremely bright display, operating at 300 nits (400
cd/m
2
). The GDR 12H operates at 800 nits (800 cd/m
2
). We strongly
recommend that, unless the unit is used in very bright lighting
conditions, the brightness be reduced to around 60 to 70% using
the On-Screen Control. This helps to eliminate any residual screen
noise, and also will greatly prolong the backlight life of the panel.