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11. Lamp menu
11.4 Constant Light Output mode (CLO mode)
What can be done?
Constant Light Output allows to force a constant light output (set in the CLO Target lumens item) of the projector over a certain
period. This will eliminate uncontrolled light output drop caused by natural aging of the lamp. The light output is checked every 5
minutes, if the target is not met, the lamp power is adjusted.
Setting CLO off means that the lamp will operate at constant power (no power adaptation to meet constant light output).
In the illustration below, a normal light output curve is shown over the first 1000 hours, image 11-8. By u
sing CLO and setting the
target to 60% of the maximum light output, one will be able to operate during approximately 500 hours with a constant light output,
image 11-9.
100
20
40
60
80
200 400 600 800 1000
Relative Light Output (%)
Runtime (hrs)
Image 11-8
100
20
40
60
80
200 400 600 800 1000
Relative Light Output (%)
Runtime (hrs)
Constant Light Output
working area
Image 11-9
How to set the CLO On or Off
1. Press MENU to activate the menus.
2. Use the ▲ or ▼ key to select Lamp and press ENTER.
3. Use the ▲ or ▼ key to select Power and press ENTER.
4. Use the ▲ or ▼ key to select CLO mode and press ENTER to toggle between [On] and [Off]
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