AUTO TUNE
Automatically optimizes the VGA signal for viewing.
With the Main Menu displayed,use
the 
button to select AUTOTUNE
AUDIOVOX
MAIN DISP
SUB DISP
AUTOTUNE
CONTRAST
BRIGHTNESS
AUDIO
COLOR
QUALITY
POSITION
OSD SETUP
RECALL
SAVE EXIT
EXIT 800X600
H:53.6KHZ V:84.8HZ
Then Press and release the Menu button to display the following screen :
AUTOTUNE
DOING
AUTOTUNE :
Only worked when unit is connected to computer and the screen will appear "DOING"
CONTRAST
Adjusts the image brightness in relation to the background.
BRIGHTNESS
Adjusts the overall image and background screen brightness.
CONTRAST
16
Press the 
button to adjust setting then press Menu to return to the previous menu.
BRIGHTNESS
32
Press the 
button to adjust setting then press Menu to return to the previous menu.
33