Adjusting Lamp Position For Lamploc; Use The Do Auto Button For Lamploc; When To Use The Individual Lamploc™ Buttons - Christie CP2000-SB User Manual

3.8.4 Adjusting Lamp Position for LampLOC™

Align a newly-installed lamp as soon as possible to ensure optimized lamp performance and peak brightness at
the screen for the life of the lamp.
NOTES: 1) Before adjusting, a 10-minute warm-up is recommended. 2) You can adjust lamp position either
before or after adjustment of Lamp Power or LiteLOC™. 3) Footlambert calibration should be performed
with lamp change, i.e. 2K to 3K.

Use the Do Auto Button for LampLOC™

For best results in all installations, align the lamp by pressing the Do Auto button in the Advanced: Lamp
menu. The motors and sensors in the projector will work together to precisely position the lamp for optimized
performance and brightness, utilizing filtering to eliminate signs of lamp flicker. Once aligned, this
LampLOC™ setting can be considered fairly stable for the life of the lamp.
When to Use the Individual LampLOC™ Buttons
The individual LampLOC™ arrow buttons, each of which moves the lamp in one direction only, are provided
as a reassuring back-up should the Do Auto button fail or if you feel a manual, operator-assisted lamp
optimization will result in more output. Either measure your results with a light meter at the lens and screen or
simply watch the light output gauge in the Advanced: Lamp menu. Note that with these buttons you may
attain a slightly higher peak than with the Do Auto button, but the peak may not be centered on the lamp curve
and lamp performance may not be optimized (whereas the Do Auto button also utilizes filtering to eliminate
the effects of any lamp flicker). In general, use the individual buttons only when you feel it is unavoidable.
HOW TO ADJUST (IF USING A LIGHT METER):
First obtain peak readings on a light meter centered in front of the lens, then at the center of the screen. For
each button, continue in one direction, then back up when reading begins decreasing.
NOTES: 1) Display a 100% white internal test pattern. 2) Use a tripod to center the light meter with the lens.
Distance from the lens does not matter. You may need an attenuator, or wish to construct an internal foil
aperture first. 3) This is an optional procedure-use the light output gauge in the Advanced: Lamp menu if
preferred.
1. Adjust forward/aft (z) until the brightness reading
in front of the lens is maximized.
2. Adjust left/right (x) and up/down (y) until the
brightness reading in front of the lens is
maximized.
3. Re-adjust forward/aft (z) as necessary.
4. Repeat Steps 1-3 as necessary.
5. Repeat Steps 1-4, but reading at the screen instead
of at the lens.
6. Reset Lamp Power or LiteLOC™ if desired.
CP2000-SB User Manual
020-100162-06 Rev. 1 (03-2014)
Measure at
lens, then
at screen
Step 2
Steps 1
and 3
Figure 3-50 Adjusting Using a Light Meter
Section 1: Introduction
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