Christie DLV1280 DX User Manual page 90

Never change color temperature white levels
1e)
In the White Uniformity menu, reduce each color light output level to 50.0.
This decreases the light output from each color just enough throughout the
screen so that any
color level can
then be increased
later as necessary
for matching light
output from zone-
to-zone. Do not
exceed 50.0—a
higher level will
likely interfere
with achieving
brightness
uniformity and is
not recommended.
See Figure 3.35.
Ensure that overall light output remains well-matched from one screen center
to the next. Where necessary, increase or decrease Lamp Power slightly to
recover center matches.
Step 2: Adjust Color Temperature (level of red/green/blue) in 8 Zones
NOTES: 1) At this point, ignore the brightness of individual zones. 2) Always ignore
menu colors.
2a)
On each screen, compare the color temperatures in the 8 target zones (4 edges
and 4 corners) to that of the color temperature of the center. Compare using a
white field only, and take note of any areas that do not match the center. Also
decide if any screen exhibits a more obvious color shift than other screens—
begin with this screen in Step
2b)
Return to the Brightness Uniformity menu. Beginning with the screen that
exhibits the most obvious color shift(s), for each edge that exhibits a
noticeably different color temperature from the center, select the
corresponding Uniformity adjustment menu—Left, Right, Top or Bottom. For
example, if any part of the left side is too blue, too red or too green, go to the
Left Uniformity menu and adjust the colors (i.e., change their light output)
until all portions of the left side closely match the center color temperature.
Adjust an edge first (focusing on its center), then adjust its corners. See Figure
3.36.
IMPORTANT
in color-matched applications!
2b
.
OPERATION
Figure 3.35.
DLV1280 DX User's Manual
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