Adjust Top And Bottom Boresight; Adjust Top And Bottom Boresight With An Ils - Christie CP4230 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
balance 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
well-focused.
8. Re-focus the center of the image. The goal is for good focus at the
center and on all sides.
9. Tighten the vertical hold screw to maintain your adjustments.
10. Check the boresight again.
4.8

Adjust Top and Bottom Boresight with an ILS

1. Loosen the Vertical Locking Screw.
2. Extend the lens focus completely.
3. Adjust the Focus to retract the lens using the counter-clockwise
button on the ILS Adjust window. Watch the image at the top edge
of the screen until it comes into focus. If the image appears well
focused on the top edge but not on the bottom, we need to
determine if the bottom edge focuses in front of or behind the
screen. If the entire screen comes into focus, skip to step 8.
4. Continue retracting the lens.
4-4
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Focus
Top Center
Hold
Adjust
V Boresight
Bolt
CP4230 User Manual
020-100621-02 Rev. 1 (1-2012)
Focus