Mechanically Adjusting Dmd Convergence - Christie CP4440-RGB Installation And Setup Manual

Repeat for the vertical lock screw (lock C in the images in step 2).
Continue the gradual tightening of each screw, until all lock screws are tight.
When stabilizing image vibration, lock B may be left locked or unlocked at the discretion of the
installer.
15. If you used the focus knob (F in the images in step 2) to make the adjustments manually, run
an ILS auto calibration.
16. Fine tune the focus on cross-hair patterns I (horizontal) and II (vertical) using the ILS
controls only.
The goal is to obtain good focus at the center and on all sides of the screen, including the
square patterns across the screen.

Mechanically adjusting 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 three colors should overlap to form pure white lines throughout the image and one or more poorly
converged individual colors may appear adjacent to some or all of the lines.
When adjusting the convergence, you are adjusting red and green to blue.
If you wear glasses with corrective lenses when performing this adjustment, make sure you are viewing
the test pattern on a straight angle through the optical axis of your glasses and not from a tilted or
angled perspective. This avoids a prismatic effect that can appear to shift convergence when viewing at
an angle.
1. Before adjusting 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. Make sure the electronic convergence (ECC) is defaulted before doing mechanical convergence.
3. In the right toolbar, select Test Patterns.
4. Select the RGB-4K-Convergence test pattern and display it full screen.
Make sure the Uncorrected Color Box option is selected.
CP4440-RGB and CP4450-RGB Installation and Setup Guide
020-103072-05 Rev. 1 (01-2023)
Copyright © 2023 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Adjusting the image
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