Refining Calibration Data
After calibrating a fixture, Residuals for each measurement point will be calculated and displayed in the
Fixture Calibration Points widget.
Calibration errors are differences between the calculated pan/tilt values of a fixture and the estimated
pan/tilt values of the fixture, based on all measurement points used in the calibration. A calibration
residual range between 0-0.08 indicates that a given measurement point is accurate relative to the
overall fixture calibration. A collection of high quality samples is necessary for accurate fixture
calibration. In this case, the smaller the number, the better.
A measurement point with a large residual value indicates that it was collected poorly relative to the
other points. Poor quality measurement points should not be used in calibration; they should be removed
and the fixture re-calibrated.
Fixture Calibration Points widget
To disregard measurement points for a fixture
In the Fixtures widget, select the fixture that has measurement points you want to stop using for1.
calibration.
In the Fixture Calibration Points widget, clear the Use checkbox for any measurement points you2.
will not use.
Result: The selected measurement points will not be used for the fixture’s calibrated
position next time you hit calibrate selection.
Note: If after removing measurement points from a fixture you have less than 5 remaining, you need to
collect more sample measurement points before you recalculate fixture calibration.
To delete measurement points from a fixture
In the Fixtures widget, select the fixture you want to delete measurement points from.1.
In the Fixture Calibration Points widget, select any measurement points you want to delete.2.
Click Delete Point(s).3.
Result: The selected measurement points are deleted from the fixture.
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