How do I calibrate the sensor for the local magnetic field?

MagField Mapping serves as a recalibration of the magnetometers if using the motion tracker only. The basic principle is that by moving the motion tracker through 3D or 2D orientations, the magnetic distortion is mapped to these orientations and interpolated to the remaining 3D or 2D volume. Preferably, a 3D mapping should be performed but a 2D options is available for applications with large vehicles or structures. Refer to the documentation supplied with the Magnetic Field Mapper for more detailed information.

The MagField Mapper will also compensate for magnetic disturbances that are caused a by ferro magnetic object that the motion tracker is rigidly attached to. E.g. if the motion tracker is mounted on a platform or device with ferromagnetic components, performing Magnetic field mapping is usually required to obtain the best results. Note that the Magnetic Field Mapping cannot compensate for a changing magnetic environment in the case that your platform contains an electric motor or moving ferro-magnetic parts close to the motion tracker.