15 Color Balancing
Color Balancing for Multiple Displays
Color balancing makes the individual displays in an array show
the same colors. Colors vary slightly from one display to the
next, because of slight variations in the lamps and DLP engines.
Color balancing can compensate for this.
There are two methods to color balance a wall:
• Manual color balance
• Auto color balance (ACB)

Manual Color Balancing

To color balance, you only have to match whites and grays.
When you make all the displays look the same with white and
gray, all the other colors will look the same.
Caution: Do not match the colors of the displays with the Black and
White Level controls or with the video controls.
Caution: If you are color blind, even a little bit, do not manually color
balance your array. Have someone else color balance the wall.
1 Turn on all the displays in the array and let them warm up
for at least five minutes. The lamps must be thoroughly
warm before you color balance.
2 On each display, open the COLOR BALANCE menu by
pressing MISC once on the remote.
Note: If the array has never been color balanced, make sure you start
with the Native color temperature option on each display. If you don’t
need a specific color temperature, use Native, which is the brightest.
3 On each display, highlight TEST PATTERN and use the left/
right arrow keys until the menu displays WHITE.
Note: Always use the internal Test Patterns for color balancing, not an
external pattern.
4 When all displays are white, find the least bright display in
the array. This will be the “baseline” display, and you will
not adjust it. All other displays will be adjusted to this
baseline display.
5 Choose a display next to the baseline display and adjust
its white values (red, green, and blue) to make it match the
baseline display. Concentrate on the center of the dis-
plays, not the adjacent edges.
6 Continue with other adjacent displays until all the displays
have the same appearance when white. Be careful not to
change the values of displays once you are satisfied with
them.
7 When all displays look the same when showing the White
test pattern, select the Gray test pattern in all displays.
8 Choose any display as the new baseline display. It does
not need to be the baseline display you used for white.
9 Adjust gray for all the displays until they match the base-
line display. Do one display at a time. Again, match the
center part of the picture, not the edges.
10 When all displays match in gray, close all the menus. The
test pattern automatically turns off.

Auto Color Balancing (ACB)

ACB automatically determines the display’s brightness of the
maximum range of colors (also called “color gamut”) that can be
created on all the displays in the array. Then ACB matches the
light output on all the displays and adjusts the color outputs.
You must have the optional WallNet device and optional Option
key with ACB. For more information about ACB and WallNet
installation, see the WallNet manual.