VIEWSONIC VX510 - Manual (Page 10)

Main Menu Controls
Adjust the menu items shown below by using the up ▲ and down ▼ buttons.
Control Explanation
Auto Image Adjust automatically sizes, centers, and fine tunes
the video signal to eliminate waviness and distortion.
Press the [2] button to obtain a sharper image.
If this function does not work on your LCD display, then
lower the video refresh rate to 60 Hz and set the resolution
to its
Contrast adjusts the difference between the image background
(black level) and the foreground (white level).
Brightness adjusts background black level of the screen image.
ViewSonic VX510 9
pre-set value.
functions are not available for DVI input.
NOTE:
1. Auto Image Adjust works with most common video cards.
2. The Auto Image Adjust and most Manual Image
Adjust