Spatial Reference Manual
Page 54 of 158
Version 4.4
04/06/2019
10.5.2
3D Magnetic Calibration
The following procedure should be used to perform a 3D magnetic calibration.
10.5.2.1
Using the Spatial Manager Software
1. The unit should be powered on and the vehicle kept stationary.
2. After power on wait 5 minutes for the temperature and filter to stabilise.
3. Open Spatial Manager and connect to the device. Ensure that the device has a
GNSS fix before proceeding.
4. In the Tools menu, open Magnetic Calibration. Click the 3D Calibration button.
See section 11.9.2. The following steps 5, 6 and 7 can be performed in any
order.
5. Slowly rotate the vehicle twice around the X axis (roll).
6. Slowly rotate the vehicle twice around the Y axis (pitch).
7. Slowly rotate the vehicle twice around the Z axis (heading).
8. Check the status in the Magnetic Calibration window to ensure that the
calibration completed successfully. If not successful click Cancel, wait 2 minutes
and repeat from step 4. Do not press the save button in the lower half of the
dialogue, this will over write the new calibration values. The calibration values
are automatically saved internally.
10.5.2.2
Using the Packet Protocol
1. The unit should be powered on and the vehicle kept stationary.
2. After power on wait 5 minutes for the temperature and filter to stabilise.
3. Ensure that the device has a GNSS fix before proceeding
4. Send the Magnetic Calibration Configuration Packet with the action Start 3D
Magnetic Calibration. The following steps 5, 6 and 7 can be performed in any
order.
5. Slowly rotate the vehicle twice around the X axis (roll).
6. Slowly rotate the vehicle twice around the Y axis (pitch).
7. Slowly rotate the vehicle twice around the Z axis (heading)
8. Read the Magnetic Calibration Status Packet to ensure that the calibration
completed successfully. If not successful, send the Magnetic Calibration
Configuration Packet with the action Cancel, wait 2 minutes and repeat from
step 4.
10.5.3
Automatic Magnetic Calibration
Automatic magnetic calibration is an algorithm that continuously and automatically
calibrates for static magnetic interference. Automatic magnetic calibration is enabled
by default and it is recommended to keep it enabled for all vehicle types. When used