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Section 3: Operation
RPMSP & CSP70-D100U User’s Manual 3-55
.
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 (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.
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 3.30.
Figure 3.30. Match Zones to Center Color Temperature
Repeat the color adjustment of sides and corners for each edge of the screen that does
not yet match the center (note that each corner is adjustable in either of its two
adjacent “side” menus). When done, all areas of a given screen should match. Repeat
Steps
2a & 2b for all remaining screens.
Step 3: Adjust Light Output in 8 Zones
3a) For each screen, compare the light output of each edge and corner to that of the
center. If any of the areas differ, use the White Uniformity menu to match edges
and corners to the center as described below (see Figure 3.31). Begin with the
screen exhibiting the most obvious variations in light output.
• Adjust edge White Uniformity first—note that each edge adjustment also affects
the rest of the screen slightly. Keep all edges just slightly lower than the center
light output rather than matching light output precisely. Otherwise, it may not be
possible to brighten the corners (typically the dimmest areas of the screen)
enough. I.e., the best uniformity is a compromise between the brightest and
darkest areas of the screen.