
Trap ezoi d adjusts the top and bottom of the screen image 
until they have equal width. 
Parallelogram slants the vertical edges of the screen image 
until they are parallel.
Rotation rotates the entire screen image.
Degauss removes the build-up of magnetic fields that can 
cause irregular colors to appear around the edges of screen 
images. There are two ways to degauss the display: 
automatically by turning the monitor on, or manually by 
selecting the DEGAUSS control from the menu.
To degauss the monitor manually, select DEGAUSS from 
the menu and press button [2].
Important: Do not degauss repeatedly. Doing so can be 
harmful to the display. Wait at least 20 minutes before 
selecting this control again.
ViewMatch® Color provides several color options: three  
preset color temperatures and User Color. The factory 
setting for this product is 9300K (9300° Kelvin).
9300K — Adds blue to the screen image for cooler white 
(used in most office settings with fluorescent lighting).
6500K — Adds red to the screen image for warmer white 
and richer red.
5000K — Adds blue and green to the screen image for a 
darker color.
User Color — Individual adjustments for red and blue 
(green is fixed). 
OSD Position (On Screen Display) allows you to move the 
menus and control screens.
Control Explanation 
ViewSonic        A90f+        9
Moire Reduction reduces interference patterns that appear 
as ripples, waves, or unwanted background color textures. 
Interference patterns of this type are most noticeable when 
viewing images having closely spaced lines or finely 
detailed patterns.
Language allows you to choose from among several 
languages for the menus and control screens: English, 
French, German, Italian, and Spanish.