Christie Roadster S+12K User Manual page 106

Operation
Achieving Brightness 
Uniformity
3-64
Using the Color Saturation Menu for Color Matching
You may prefer to use the
Color Saturation menu to
match colors across multiple
screens. In the three Color
Adjustment submenus (Red,
Green, Blue—see Figure
3.30), set all main values to
100 and the secondary values
to 0. Then judge by eye and
adjust the slidebars as
needed. Note that
adjustments here define new
x/y coordinates in the Color
Adjustments by X,Y menu.
For best results, use this
menu after doing the color
adjustment procedure.
WHAT IS BRIGHTNESS
When used to refine screens already matched for their primary colors
UNIFORMITY?
(see Matching Colors in Multiple Screens, above) and overall light output, proper
adjustment of Brightness Uniformity can create an exceptionally smooth screen in
which:
•
No area of the screen appears more red, green or blue than another
•
No area of the screen appears brighter than another
•
Color and light output from one screen closely matches adjacent screens
Although the Brightness Uniformity control can be used for a stand-alone projector, it
is particularly useful for setting up and maintaining tiled images that form a cohesive
display wall in which the color "cast" and light output appear uniform throughout
each image as well as throughout the entire wall. The procedure provided here
assumes a multiple-screen application.
Before You Begin
Read through the entire procedure before attempting to adjust Brightness Uniformity
controls, and keep in mind the following checklist of prerequisites and guidelines:

ADJUST COLORS FIRST—
"Matching Colors in Multiple Screens" procedure (above) before attempting to
work with Brightness Uniformity. This ensures that primary colors, color
temperature, and maximized light output are all well matched from one screen to
another. These matches are needed before you can achieve good Brightness
Uniformity results.

RUN LAMP FOR 100 HOURS—
significantly during the first 100 hours of lamp use. For best results with new
lamps, either set up Brightness Uniformity after this period, or do an initial setup
and re-check at 100 hours.
Figure 3.30. Color Matching Using
Color Saturation Menu
Always adjust the primary colors as described in the
Light output and Brightness Uniformity can vary
Roadster & Mirage S+/HD User Manual
020-100002-04 Rev. 1 (12-2008)