Horizontal adjustments are controlled by adjusting knob 3.
Vertical convergence and rotation are controlled by adjusting knobs 1 and 2. Christie
recommends rotating a single knob a maximum of a quarter rotation before adjusting the
second knob a quarter rotation. For example, if using one hand, turn the left knob a quarter
rotation and then the right knob a quarter rotation, and so on. Adjusting a single knob for
vertical or rotational adjustment to an extreme before adjusting the second knob may result in
the convergence mechanism binding.
For the best stability, Christie recommends setting convergence while rotating the knobs in a
clockwise direction. This may require first adjusting convergence by turning the knobs counter-
clockwise, and finalizing the convergence with a clockwise approach. This applies to all knobs.
7. When complete, push in all the convergence adjustment knobs to disengage them.
Masking the screen edges
Conceal the unused edges of a screen with top or side masking.
Typically, you install top and side masking to allow a greater range of adjustment.
1. To create top masking:
a) Install movable flat black panels or curtains along the top edge of the screen.
b) Raise the curtain for flat images or lower the curtain for scope images.
Top masking theater (1.85 screens)
A
1.85 image
B
2.39 image
C
Masking moved up
D
Top masking to hide screen top
2. To create side masking:
a) Install movable flat black panels or curtains along each side of the screen.
b) Close the curtain for flat images or open the curtain and zoom for scope images.
Adjusting the image
Cinema 4K-RGB User Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
66
020-102712-06 Rev. 1 (03-2021)
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2021 Christie Digital Systems USA, Inc. All rights reserved.
