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.
To disregard measurement points for a fixture
- In the Fixtures widget, select the fixture that has measurement points you want to stop using for calibration.
- In the Fixture Calibration Points widget, clear the Use checkbox for any measurement points you 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.
- In the Fixture Calibration Points widget, select any measurement points you want to delete.
- Click Delete Point(s).
- Result: The selected measurement points are deleted from the fixture.