Christie M Series User Manual page 86

Step 2: Adjust Color (level of red/green/blue) in Eight Zones
At this point, ignore the brightness of individual zones.
NOTES: 1)
a. On each screen, compare the color temperatures in the eight target zones (four edges and four 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.
b. 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), and then adjust its corners.
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 Eight Zones
a. 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. 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.
• Adjust corner White Uniformity last—each corner adjustment affects only this quadrant.
• Repeat for each screen.
Step 4: Readjust Color Temperature (level of red/green/blue) in Eight Zones
a. Return to Steps 2a & 2b and, if necessary, fine-tune the zones so that they all still exhibit a single color
temperature.
Cancelling Brightness Uniformity
If you do not want to use or apply Brightness Uniformity settings, delete the checkmark from the Uniformity
Enable check box at the top of the Brightness Uniformity menu.
EDGE BLENDING
The Edge Blending submenu provides a range of controls for smoothing together the overlapping bright edges
of multiple adjacent projected images to create a single larger "seamless" image. These controls, which
primarily affect white levels, are typically used in conjunction with mechanical lens blinders (optional), which
are installed on the front of the projector and which primarily affect black levels. Brightness uniformity
adjustment, if desired, should be performed first. The Edge Blend or Grid test pattern is useful for the
mechanical setup of the projectors. If necessary, adjust Black Level Blending first with the Black test pattern,
then use the White test pattern to blend the white levels on the blend edges. The final step is to check the
blended image with an external source.There is a centerline (both horizontal and vertical) in the Edge Blending
test pattern. The intersection of these lines is the true center of the projector's display area.
The Show Blending Overlap control enables or disables edge blending overlap. When enabled, this will make
the size of the Edge Blending regions obvious. This control should only be used during setup.
M Series User Manual
020-100009-04 Rev. 1 (10-2009)
Section 3: Operation
Always ignore menu colors.
2)
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