Level Detector; Level Value; Aspect Ratio Overlay; Liteloc Calibration - Christie Roadster User Manual

Operation
3-56
NOTES: 1) Adjust offset before gain, since offset affects gain. 2) A value of 128
represents no change in normal odd pixel offset or gain. 3) Odd Pixel Adjustment
eliminates "one pixel on, one pixel off" artifact only, not any type of larger artifacts.
Reserved - No function.
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.

Level Value

Level Value defines the value to be used by the Level Detector in recognizing blacks
and whites. Refer to Level Detector, above.

Aspect Ratio Overlay

Selecting this option with a checkmark will overlay a number of common aspect ratio
boxes on top of the source image. This is very helpful during the setup of the
projector and can be turned off after desired specifications have been achieved.
LiteLOC™ Calibration
NOTES: 1) LiteLOC™ Calibration takes up to two minutes. 2) For best results,
allow the projector to warm up for 15 minutes prior to calibration.
LiteLOC™ Calibration defines the range of power needed to maintain lamp
brightness. Select Calibrate LiteLOC for calibration using your projector's unique
specifications (recommended) rather than standard specifications. The projector will
revert to the default back up in the event of a power failure. Refer to the Lamp menu
for more details.
1. Use Default Settings
2. Calibrate LiteLOC
Roadster, Matrix WU, Mirage S+/HD/WU User Manual
020-100002-05 Rev. 1 (02-2010)