Christie Roadie HD+35K, User Manual

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Section 3: Operation
Roadie HD+35K User Manual 3-53
020-100340-02 Rev. 1 (01-2010)
Two sets of values are automatically saved with these controls-one value for Input #1, and one for Input #2
(analog). The current set of values depends on which source is in use. This enables a source to be processed
correctly via 2 different inputs.
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 "1 pixel on, 1 pixel off" patterns only, not any type
of larger patterns.
Reserved
No function.
Peak Detector
The
Peak Detector
is fast method of 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 then display blacks and whites correctly without
crushing or washing out.
Level Detector
The
Level Detector
check box enables a 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
The Level Value defines the value to be used by the Level Detector in recognizing blacks and whites. See
Level Detector , above.
Lens Center
Lens Center moves the horizontal and vertical lens offsets to their center position.
Lens Calibration
Reference calibration determines a reference point that is used as a defined starting position for relative motion
of the lens. All positioning is measured from this reference point.
Lens calibration must be performed each time a new lens is inserted or after
performing manual lens mount adjustments. This is critical to the projector
functioning properly. Failure to do so could result in damage to the lens mount, the
projector, or the projection lens.