I think my sensor is no longer properly calibrated. What can I do about it?

To check your calibration, run the MT Manager and open the MT Settings dialog. Click the 'Revert' button and confirm. Rescan for motion trackers and activate the 'Raw Data' output option in the 'Device List'.

Place the tracker on a horizontal surface without magnetic disturbance. Start recording and do not move, or let the tracker be moved, for 30 seconds. Rotate it 4 times in steps of 90º about the x-axis, holding it still for 10 seconds after each step. Repeat this process for the y- and z-axis. Return it to the original orientation, wait another 10 seconds and stop recording. After recording, replay the file and keep a close eye on the calibrated data graphs. The accelerometers should add up to about 9.8 m/s^2 (vector addition), the gyroscopes should fall back to values between -4 and +4 when the sensor is held still. The magnetometers should, at all times, show a magnetic norm (black line) of about 1 (0.8 - 1.2 is generally good enough). If the norm of the magnetic field vector varies depending on the orientation, perform a magnetic field mapping.

If the accelerometers or the gyroscopes do not show the correct values, or the magnetic field mapping does not yield the desired results, contact support with a binary data file of the above measurement (*.mtb) and a clear description of the problem you see.