ViewSonic PF790 - Page 9

8 ViewSonic PF790
Main Menu Controls
The menu items shown below can be adjusted by using the up
 and down 
buttons.
Control Explanation
Contrast adjusts the difference between the image
background (black level) and the foreground (white level).
Brightness adjusts background black level of the screen
image.
Horizontal Position moves screen image left or right.
Horizontal Size adjusts width of the screen image.
Vertical Position moves the screen image up or down.
Vertical Size adjusts the height of the screen image.
Pincushion curves the vertical sides of the screen image.
Pin Balance curves the vertical edges of the screen to the
left or right.
Trapezoid makes the vertical edges of the screen image
parallel.
Parallel slants the vertical edges of the screen image.
Zoom expands and contracts the entire screen image.
Tilt rotates the entire screen image.