Christie DS+5K User Manual page 79

projectors. Or you may be renting a projector in which the colors were corrected for
use at its previous site, but are not ideal for yours.
The recommended first step in achieving such consistency is to use a color meter to
measure the native primary colors—red, green, blue, and white—as they appear at the
screen and record these as Color Primary Settings in the Service menu (password-
protected) for each projector. On the basis of these new values, which are stored in
memory, each projector will then automatically calculate any necessary corrections to
reproduce the original factory colors under the current environmental conditions. This
essentially calibrates a projector to its surroundings, compensating for factors such as
screen type, lamp and/or ambient lighting that can alter the final color characteristics
on-screen, and will improve color accuracy and consistency in a group of projectors. It
ensures a good starting point for further customizing and matching; however, is not
critical for all installations.
To return to the factory-set color primaries, such as when a projector is moved to
different site, you must access the Service menu (password-protected). Select the
Reset to Factory Defaults? option in the Color Primaries submenu. Then repeat the
calibration process describe above, if desired, and continue with matching of colors.
Color Adjustment Procedure
Once the Color Primary Settings are calibrated for the site (see above), use the Color
Adjustments by X,Y or Color Saturation menu to further refine each projector's
fundamental colors so that the hue and intensity of each color appears the same from
one display to another. Once matched, you will have created a single new shared
range of colors or "color gamut" that all of your projectors can produce. This
palette—named User 1, 2, 3 or 4—can be applied or disabled for a source at any time
throughout a bank of adjacent displays, simplifying both the setup and maintenance of
a "seamless" wall.
1. Set up and optimize all projector settings. You can ignore color temperature, since
you will be redefining color performance in this procedure, but do optimize each
projector in every other aspect. Closely align all screen edges.
2. Assign projector numbers to make communications easier. Use desired keypad.
3. Use the same lamp mode for all projectors, and do the following:
Set Select Color Adjustment to "Max Drives"
Display a full white test pattern
Adjust lamp power and Optical Aperture until adjacent white fields appear the
same brightness.
4. Display the Color Adjustments by X,Y menus for all projectors. Each menu shows
the x/y coordinates defining the "Max Drives" color gamut for this projector. Jot
down the values shown in one (any) of the displays. See Figure 3.27. Or use the
"Copy From" function to copy them into a "User" gamut in one projector.
Section 3: Operation
User's Manual 3-53
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