Aligning The Image; Selecting A Test Pattern; Adjusting Offset - Christie Mirage 304K Installation And Setup Manual

Aligning the image

Only perform image alignment after the projector is fully assembled and powered up in its final
location.
Basic image alignment ensures the image reflected from the DMDs is parallel and well-centered with
the lens and screen. This initial optical alignment is the foundation for optimizing images on the screen
and must be completed before final boresight adjustments. Before beginning, make sure the projector
is properly positioned in relation to the screen.
1. Make sure the projector is positioned in the throw distance range for the particular lens.
2. Display a test pattern.
3. Do a quick preliminary focus and (if available) zoom adjustment with the primary lens.
Do not worry about consistency across the image at this point, just center focus. It is good
practice to have zoom adjustment and focus adjustment in the center of its range.
4. Holding a piece of paper at the lens surface, adjust offsets as necessary until the image is
centered within the lens perimeter. A full black field works best for this.
5. If the projector is mounted off center to the screen axis, offset the lens as much as required.
Aim the projector over slightly towards the center of the screen, but use caution when doing
so, as too much tilt causes excessive keystone distortion.
6. With a framing pattern on screen, double-check projector leveling so the top edge of the image
is parallel to the top edge of the screen.

Selecting a test pattern

Many test patterns are available to assist with the configuration of the projector and to diagnose any
issues that may occur.
1. From the display panel, use the arrows to select Test Pattern.
You can also select the test patterns from MENU > Test Pattern or pressing N on the IR
remote.
2. Scroll through the list of test patterns.
3. Select the required test pattern.
4. To confirm your selection, select Enter.

Adjusting offset

Adjust the offset to align the image on the screen. Always adjust offset before adjusting boresight.
For the best optical performance and minimal keystone, use offsets instead of aiming at the center of
the image, in off-axis installations. Avoid extreme tilts or offsets. Corner vignettes on a white test
pattern indicate extreme offset that should be avoided using mechanical alignment.
1. Project an image with the primary lens.
2. Select a framing test pattern.
3. Select LENS OFFSET.
You can also select MENU > Configuration > Lens Settings > Lens Offset.
4. Use the arrows to adjust the offset to display a square image on the screen, with minimal
projector aiming error.
5. To exit to the home page, select Back.
Mirage 304K (Bm.1) Installation and Setup Guide
020-102013-12 Rev. 1 (09-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Installation and setup
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