Barco R9040411, User Manual, Page: 118 / 209

5. Advanced
5.7.4.1 Constant Light Output Mode
What can be done?
Constant Light Output allows to force a constant light output (set in the CLO Target ... menu) 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 fi rst 1000 hours, image 5-119. By using 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 5-120.
100
20
40
60
80
200 400 600 800 1000
Relative Light Output (%)
Runtime (hrs)
Image 5-119
100
20
40
60
80
200 400 600 800 1000
Relative Light Output (%)
Runtime (hrs)
Constant Light Output
working area
Image 5-120
CLO can not be enabled (ON) if the lamp is working in Economic mode.
How to set the CLO On or Off ?
1. Press MENU to activate the Tool bar
2. Press → to select the Lamp item
3. Press ↓ to Pull down the Lamp menu
4. Use ↑ or ↓ to select CLO
112 R59770718 GALAXY NW SERIES 20/06/2013