Magnetometer Warning

IMPORTANT: Features requiring a magnetometer are only available on device models with magnetometers. See Product Description to verify that your device has a magnetometer.

The on-board magnetometer is provided as a convenient means to determine a heading estimate . To accurately infer sensor orientation based on a magnetic field measurement requires careful design with respect to sensor installation. Calibration is usually required post-installation, and may be difficult or impossible to achieve.

Before using the magnetometer as a heading source, it must be calibrated. Refer to the Magnetometer Calibration page for more details.

The 3DM-CX7 supports external magnetometer aiding in case an external magnetometer can be located on the vehicle in a more benign magnetic environment (e.g. on a mast above the vehicle.) Note that the data provided from the external magnetometer is assumed to be calibrated. Reference the External Aiding Sensors page for instructions on using an external magnetometer.