4-2
CP2210 User Manual
020-100410-07 Rev. 1 (01-2012)
Section 4: Adjusting the Image
4.3
Basic Image Alignment
This procedure ensures that the image reflected from the digital micromirror device (DMD) is parallel and
centered with the lens and screen. This procedure must be completed before you complete a boresight
adjustment.
1. Verify the CP2210 is properly positioned relative to the screen. See
2.3 Position the Projector
.
2. Display a test pattern that you can use to analyze image focus and geometry. The framing test pattern
works well for this.
3. Perform a preliminary focus and (if available) a zoom adjustment with the primary lens. Focus the center
of the image first. See
5.6 Work with Lenses
.
4. Hold a piece of paper at the lens surface and adjust the offsets until the image is centered within the lens
perimeter.
5. With the framing test pattern on screen, re-check projector leveling
so the top edge of the image is parallel
to the top edge of the screen.
4.4
Adjust Offset
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.
Project an image with the
primary lens
. Always adjust offset before boresight.
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.
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.
4.5
Adjust Left and Right Boresight
When performing these adjustments the goal is to balance the tilt of the lens mount to compensate for screen to
projector tilt, but also to precisely maintain the original factory settings of the lens mount axial position.
Only adjust vertical boresight 1/8 of a turn or less at one time to maintain
optimal lens performance (i.e. factory setup of absolute lens distance to the prism). It is
critical that each turn of the cap screws is tracked to ensure adjustments are accurate.
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