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10. If further action is required, repeat steps 2 to 9.
11. Lock the setscrews, and re-check the boresight quality.
Tighten the setscrews to 2.1 Nm (18 in-lb) to make sure they do not shift.
Mechanically adjusting digital micromirror
device (DMD) convergence
A convergence problem can be identified when one or more projected colors (red, green, and blue)
appears misaligned when examined with a convergence test pattern.
The physical layout of the green and blue formatter boards dictates the behavior of the twist and
vertical adjustments:
•
The adjustment of the two is more like a twist with the left-side of the screen as a sliding hinge
point to allow vertical travel.
•
The vertical adjustment screw and twist adjustment screw interact with each other so if one is
turned in the opposite direction of the other, the twist is affected.
•
If both screws are turned equal amounts in the same direction, the image moves vertically.
1. Before adjusting digital micromirror device (DMD) convergence, make sure the projector has
reached a steady operational state.
If switching from a white or bright test pattern to a dark convergence test pattern or if
warming up the projector after a shutdown, allow 15 minutes for stabilization so the optics
can reach a steady state.
2. In the right toolbar, select Test Patterns.
3. Select the RGB-2K-Convergence test pattern and display it full screen.
4. Access the screws on the light engine.
Cinema 2K-RBe Installation and Setup Guide–CP2406-RBe, CP2409-RBe, and CP2411-RBe
020-103907-01 Rev. 1 (03-2024)
Copyright
©
2024 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Adjusting the image
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