Watch this video for how to do Compass Calibration after starting the calibration procedure inside the Sentera Ground Control software.

After starting the Compass Calibration in Sentera Ground Control, follow the onscreen instructions and listen to the start beep (1 beep) and finish beeps (2 beeps) for each of the 6 sides.  Perform the rotations away from any metal objects as shown in this video.

This is how you should hold the vehicle when rotating about the 6 different sides: