Adjust Offset; Adjusting Left/Right Boresight - Christie Solaria CP2220 User Manual

Section 2: Installation and Setup

2.9.1 Adjust Offset

Project an image with the primary lens only. Always adjust offset before boresight. Important! Ensure the
correct lens is selected in the Advanced Setup: Lens Setup window before calibration to ensure you will
remain within the applicable boundary of the installed lens when adjusting.
1. Using the framing test pattern, adjust horizontal and vertical Offset as necessary to display a square image
on the screen with minimal projector aiming error. (Figure 2-20) NOTES: 1) For best optical
performance, make sure to minimize keystone error by using offset more than aiming to center the image in
off axis installations. 2) Avoid extreme tilts or offsets. Corner vignettes on a white test pattern indicates
extreme offset that should be avoided using mechanical alignment.

2.9.2 Adjusting Left/Right Boresight

The goal for left/right boresight alignment is to adjust the lens mount until both sides of the image focus on the
screen simultaneously. Projectors are aligned properly at the factory, but due to mechanical tolerances in the
alignment between the projector and the screen, the left and right sides of the image come into focus at
different times. By focusing on the left side of the screen, we need to determine if the right side of the image
focuses in front or behind the screen relative to the left side. NOTE: Use a test pattern with a single pixel
vertical and horizontal line and perimeter frame such as DC2K Framing or RGB Alignment.
1. The Horizontal Hold Screw acts as counter-resistance to hold the lens mount in place once set. Before
adjusting the boresight, loosen the Horizontal Hold Screw.
2. Extend the lens focus completely.
3. Adjust the Focus using the focus knob to
retract the lens. (Figure 2-21) Watch the
image at the left edge of the screen until
it comes into focus. If the image appears
well-focused on the left edge but not on
the right, we need to determine if the
right side focuses in front of or behind
the screen. If the entire screen come into
focus, skip to step 7.
2-18
Focus
Left Edge
Center
Figure 2-21 Adjust Focus
Focus
CP2220 User Manual
020-100420-06 Rev. 1 (03-2011)