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3.2.4 LED Current Settings
On the top-right of the GUI window, the LED Current settings control the individual currents of the red,
green, and blue LEDs. A setting of 255 corresponds to the maximum LED current. A setting of 0
corresponds to minimum LED current. The LED current is computed as follows:
Red LED Current (A) = 0.0175 × (LED Current Value) + 0.4495 (1)
Green LED Current (A) = 0.0181 × (LED Current Value) + 0.3587 (2)
Blue LED Current (A) = 0.0160 × (LED Current Value) + 0.1529 (3)
Typical performance of the red, green, and blue LEDs are shown in Figure 2, Figure 3, and Figure 4,
respectively. Manufacturing processes can lead to variations in LED brightness and current consumption.
Actual LED performance might vary from those shown in the following figures.
Figure 2. Typical Red LED Current and Illuminance Based Figure 3. Typical Green LED Current and Illuminance
on PWM Values Based on PWM Values
Figure 4. Typical Blue LED Current and Illuminance Based on PWM Values
CAUTION
The DLP LightCrafter 4500 is an actively cooled system that has a thermal limit
resulting in total simultaneous red, green, and blue LED currents less than
4.3 A for continuous LED operation. Do not overheat the system by turning all
LEDs at maximum power during prolonged and simultaneous LED use.
Exceeding more than 4.3 A for continuous or simultaneous LED operation can
damage the LightCrafter 4500 LEDs.
28
Operating the DLP LightCrafter 4500 DLPU011E–July 2013–Revised September 2015
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