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DU9800Z DLP Projector - User Manual
33
UM98001117EN00
Using the Constant Brightness Function to Maintain the Brightness Output
The brightness output of a projector may decline after thousands of hours of usage. In certain applications, such as
mapping, a periodical adjustment to multiple projectors is required to ensure the overall image result. Vivitek’s Constant
Brightness feature is designed to reduce the need for installers to regularly recalibrate the projectors. A built-in light sensor
inside the projector monitors the level of light so that when a reduction in light is detected, the projector will regulate
dynamically the electricity power to increase the light output to your pre-defined brightness level, and thus maintaining a
constant level of brightness. To use this function, follow the steps below:
1. Select SETUP > Light Power > Light Power. Change it to Custom Power Level with a value under 100%. For example:
90% or 85%. The reduced power percentage will be used to later regulate the brightness when the Constant
Brightness function is enabled.
2. Enable the Constant Brightness function
Note:
After a long period of time, when a power boost reaches its limit of maximum power, the Constant
Brightness function will no longer increase the electrical power to the laser light source. In this case,
please turn off the Constant Brightness function. You can also readjust all the projectors to a new level
of brightness with a lower Customer Power Level percentage, so that the Constant Brightness function
will work again.
Light Power
Light Power
Customer Power Level
Constant Brightness
EXIT = Back Item Adjust ◄► Scroll ▲▼
90%
On
Custom Power Level
INPUT PICTURE ALIGNMENT CONTROL SERVICE
Light Power
Light Power
Customer Power Level
Constant Brightness
EXIT = Back Item Adjust ◄► Scroll ▲▼
90%
On
Custom Power Level
INPUT PICTURE ALIGNMENT CONTROL SERVICE
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