When your NavVis device powers on, the device automatically runs a background calibration to set the IMU (Inertial Measurement Unit) for accurate scanning. This step is crucial for stable, precise scans and the result will stay valid as long as the device remains powered on.
This is a real-time calibration which occurs every time the device is turned on. This calibration should not be confused with the device calibration applied at NavVis HQ during Service and Maintenance activities. This larger device calibration aligns all sensors for maximum scan accuracy. See here for further details the device calibration.
Caution: Do not move the device during this procedure. Movement may interfere with the results of the calibration, reducing the accuracy of the device.
If this automatic calibration fails, a screen will be displayed prompting you to perform a manual calibration. The following procedure is the manual calibration.
Place the device on a stable level surface.
Tap Calibrate.
Wait for the progress bar to reach 100%. This should take about 20 seconds. To cancel the calibration, tap Cancel.
The UI displays a message indicating that the calibration is successful.
If this IMU calibration fails, restart the device.
FAQs
What happens when the NavVis device powers on?
When the device powers on, it automatically runs a background IMU (Inertial Measurement Unit) calibration to ensure accurate and stable scanning.
Why is IMU calibration important?
The IMU calibration is essential for precise and stable scans. It ensures the scanning system is aligned and functioning accurately.
How long is the calibration valid?
The calibration remains valid as long as the device stays powered on.
Is this the same as the calibration done by NavVis HQ?
No. The automatic calibration is a quick, real-time process done at startup. The full device calibration at NavVis HQ is a more comprehensive process done during Service and Maintenance to align all sensors for optimal accuracy.
Can I move the device during calibration?
No. You should not move the device during the automatic or manual calibration process, as it can affect the results and reduce scanning accuracy.
What happens if the automatic calibration fails?
If the automatic calibration fails, a prompt will appear on the screen instructing you to perform a manual calibration.
What should I do if the manual calibration fails?
Restart the device and try the calibration process again.