Adjust Offset; Adjust Offset With An Ils - Christie CP4220 User Manual

Section 4: Adjust the Image
4.4

Adjust Offset

Project an image with the primary lens. Always adjust offset before boresight.
Select a framing test pattern and then adjust the horizontal and vertical offset to display a square image on the
screen with minimal projector aiming error.
NOTES: 1) For the best optical performance and minimize keystone error, use offset and not aiming to center
the image in off axis installations. 2) Avoid extreme tilts or offsets. Corner vignettes on a white test pattern
indicate extreme offset that should be avoided using mechanical alignment.
4.5

Adjust Offset with an ILS

Project an image with the primary lens. Always adjust offset before boresight. Ensure the correct lens is
selected in the Advanced Setup: Lens Adjust window before calibration to ensure you remain within the
applicable boundary of the installed lens.
1. Tap Menu > Advanced Setup > Lens Setup.
2. Tap Enable Automatic ILS. Enabling Automatic ILS overwrites the pre-defined settings for the channel.
3. Tap the Test Patterns icon and select a framing test pattern.
4. Tap Menu > Advanced Setup > ILS File Setup.
5. Tap the directional arrows in the Offset area. For best optical performance, make sure to minimize
keystone error by using offset more than aiming to center the image in off axis installations. Avoid extreme
tilts or offsets. Corner vignettes on a white test pattern indicates extreme offset that should be avoided
using mechanical alignment.
4-2 CP4220 User Manual
020-100690-02 Rev.1 (1-2012)