Adjust Top And Bottom Boresight - Christie CP2220 User Manual

Section 4: Adjust the Image
4.7

Adjust Top and Bottom Boresight

1. Focus the image at the top edge of the screen.
2. Loosen the vertical hold screw.
3. Extend the lens focus completely.
4. Adjust the Focus knob to retract the lens.
Watch the image at the top edge of the screen
until it comes into focus. If the entire screen is
in focus, proceed to step 8.
5. Continue retracting the lens.
a. If the bottom edge of the image comes into focus before the lens
is completely retracted, adjust the vertical boresight bolt to direct
or aim the lens mount UP towards the top of the screen to bal-
ance out the top/bottom edges.
b. If the top edge of the image is not in focus, adjust the vertical
boresight bolt to direct or aim the lens mount toward the bottom
of the screen.
6. When both sides appear equally blurry, adjust the horizontal and/or
vertical offset to re-center the image on the screen.
7. Repeat Steps 2 - 5 until the top and bottom of the screen are both
focused.
8. Re-focus the center of the image. The image should be focused at the
center and on all sides.
9. Tighten the vertical hold screw to maintain your adjustments.
10. Check the boresight again.
4-4
Focus
Top Center
Figure 4-5 Focus Top Center of Screen
Figure 4-6 Adjust Vertical Bore-
Focus
Hold
Adjust
V Boresight
Bolt
sight Bolt
CP2220 User Manual
020-100420-08 Rev.1 (5-2014)