Native Color Settings; Calibration Procedure - Christie Entero RPMWU-LED01 Service Manual

Section 7: Service Menu

7.9.1 Native Color Settings

• Color Management Menu > Native Color Settings
The Native Color Settings menu is used to tell the projector
what native colors it produces. This allows the projector to
determine how it should optimize brightness. The best duty
cycle to use depends on the color space the projector is
being asked to achieve, and the performance of the LEDs in
the light module. When Bright/ColorLOC is enabled, the
color sensor is used by the projector to monitor the LED
performance, but when Bright/ColorLOC is disabled the
sensor is no longer used. In these cases, the system relies on
data entered at the factory that tells the projector what the
native color space is.
This is a calibration step performed in the factory. From a
service perspective this may be required if the light module
is replaced in the field.
NOTES: 1) An external color meter is needed to set these values. 2) The factory native color settings are
stored separately. If the settings made in this procedure are no longer needed, select item 11: Reset to Factory
Native Color Settings.

Calibration Procedure

1. Upon entering the native color settings menu, Measure Native Mode is selected by default. This disables
all projector features that may interfere with accurate primary measurement, including Bright/ColorLOC.
It will also select a default duty cycle.
2. Measure Native Red, Green, Blue X/Y
As each menu item is selected, the test pattern color will change. Using a color meter, measure the x and y
coordinates for each color. Use the slide bars or enter values that match the measured x and y color
coordinates for each of the primary colors.
3. Measure Native White X/Y
A white test pattern will automatically appear when these items are selected. Again, use the color meter to
measure x and y color coordinates. Use the slide bars or enter values that match the measured x and y color
coordinates for the native white output of the projector.
4. Update Native White Duty Cycle
Selecting this item forces the Native White Duty Cycle R, G and B values to match the R, G and B values
in the Current Duty Cycle field. These are described here:
Current Duty Cycle
This text string identifies the current duty cycle.
The string format is "R 99.9 G 99.9 B 99.9 W 99.9" where:
• The numbers after the "R", "G" and "B" indicate the red, green and blue strobe width as a percentage of
the sum of the red, green and blue strobe widths.
• The number after the "W" indicates the ratio (as a percentage) of the sum of the red, green and blue
strobe widths to the frame time.
7-4 Entero RPMSP/RPMWU/RPMHD-LED01 Service Manual
020-100368-05 Rev. 1 (06-2012)