Christie DW30 User Manual page 71

Color Wheel Calibration
The Color Wheel Calibration submenu allows you to set the timing of the two color
wheels in the projector. It is important the color wheels are correctly calibrated for the
colors and shades in the displayed image
to appear the same. Incorrectly calibrated,
the colors will appear in various
unmatched shades throughout the image.
Typically, this adjustment is only
required when a color wheel is replaced.
1. Select the single lamp operation mode that corresponds to the color wheel you
want to calibrate. For example, select "Single Lamp 1" when calibrating color
wheel 1 and "Single Lamp 2" when calibrating color wheel 2.
2. Enter the Color Wheel Calibration submenu – the Color Ramp test pattern will
automatically display and the "Color Enable" option will automatically switch to
White
.
3. Adjust "Color Wheel 1 (or 2) Delay" so the transitions across each color bar
appears smooth.
4. Repeat Step 1 – Step 3 for the other color wheel. NOTE: Wait for 35 seconds
when requesting a change in single lamp operation modes to allow for one lamp
to warm up and the other to turn off.
5. Verify adjustments by choosing different colors in "Color Enable".
NOTES: 1) Upon entering the Color Wheel Calibration submenu, the "Color Enable"
option automatically switches to white and the color ramp test pattern displays.
Peak Detector
The "Peak Detector" is a fast method for defining individual input levels, and can
improve the accuracy of input levels set by the Auto Input Level function. Enabling
the "Peak Detector" activates a special operating mode for detecting only pixels that
are considered black or white—all other levels are displayed as a mid-level gray.
When used with a 16-step grayscale pattern in which the two black and white bands
are known to be at opposite edges of the image, you can watch these isolated areas
while adjusting individual blacklevels and input drives until both bands are just
visible. Images from this source will then display correct blacks and whites without
crushing or washing out.
NOTE: If using Peak Detector with PIP, both images must have the same color space.
Level Detector
The "Level Detector" checkbox enables specific thresholds for blacks and whites—
input levels that fall below a specified Level Value (see below) are displayed as black,
and all others are displayed as white. It aids in Odd Pixel Adjustment. To use:
1. Enable "Level Detector" and display a continuous grayscale.
2. Set "Level Value" to near black (such as 200).
3. Adjust Offsets to minimize area of black stripe.
4. Set "Level Value" to near white (such as 800).
5. Adjust Gains to minimize area of white stripe.
— SUBMENU
Christie DS+60/DW30/Matrix 3000 User's Manual
Section 3: Operation
3-45