DU6693Z DLP Projector - User Manual
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UM66931217EN00
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 CONTROL > Light Power > Laser Mode. 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 function. Or you can readjust all the projectors to a new level of brightness with a lower
percentage of Custom Power Level so that the Constant Brightness function will work again.
