Christie CP2000-M Setup Guide download pdf (Page 40)

2-32 CP2000-M/MR Setup Guide

020-100205-03 Rev. 1 (05/09)

Section 2: Basic Operation

Adjusting Lamp Position (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.

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 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.

TIP: On-screen uniformity can be improved after using Do Auto by manually adjusting the Z-axis

motor. Brightness efficiency is decreased a very small amount when this is done.

When to use the individual LampLOC buttons:

The individual LampLOC arrow buttons, each of which moves the lamp in 1 axis only, are provided

as a reassuring back-up should the

DO AUTO button fail or when a manual, operator-assisted lamp

optimization will result in more output or improved brightness uniformity. Either measure the results

with a light meter at the lens and screen or simply watch the light output gauge in the Advanced:

Lamp menu. NOTE: These buttons may attain a slightly higher peak than when using 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 unavoidable.

How to adjust (if using a light meter):

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 1 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. 4) After performing LampLOC (Do Auto), brightness uniformity

may also be improved on some lamps by manually adjusting the Z-axis motor control. In some

instances, this may cause a reduction in overall brightness.

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.

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Christie CP2000-M Setup Guide Page 40

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