Magnetic Calibration; Magnetic Calibration Using The Web Ui Or Certus Manager Software; Magnetic Calibration Using The Packet Protocol - Advanced Navigation Certus OEM Reference Manual

Certus Reference Manual • Using Certus
Automatic magnetic calibration continuously and automatically calibrates for static magnetic interference
l
while the unit is in operation. While it is not as accurate as 2D or 3D calibration, and can take significantly
longer to calibrate, automatic magnetic calibration is very convenient for applications where it is
impractical to employ those methods.
Note: If Certus is going to be used in a vehicle, the calibration should be performed while Certus is
mounted in and fixed to that vehicle. This means that the whole vehicle must be moved to perform the
calibration. The calibration needs to be performed in an area away from other sources of magnetic
interference. For example if Certus is installed in a car, the calibration should not involve driving over
steel drains or reinforced concrete etc. If Certus is being calibrated to operate standalone, the
calibration should not be done on a desk with a steel frame.
7.5.1 2D Magnetic Calibration
The following procedure should be used to perform a 2D magnetic calibration.
7.5.1.1 2D Magnetic Calibration Using the web UI or Certus Manager Software
1. The unit should be powered on while the vehicle is in a level orientation and kept stationary. It is recom-
mended this be done in an outdoor area away from metal or obstructions.
2. After power on wait 5 minutes for the temperature and filter to stabilise.
3. Open the web UI or Certus Manager and connect to the device.
4. In the Tools menu, open Magnetic Calibration. Click the 2D Calibration button.
5. Whilst keeping as level as possible, rotate the vehicle in either direction through one and a quarter full
rotations. In a car or boat his can be achieved by driving in one and a quarter circles.
6. Check the status in the Magnetic Calibration window to ensure that the calibration completed suc-
cessfully. If not successful, click Cancel, wait 2 minutes and repeat from step 4.
Note: Do not press the Save button in the lower half of the page, this will overwrite the new
calibration values. The auto-generated calibration values are automatically saved internally by
Certus.
7.5.1.2 2D Magnetic Calibration Using the Packet Protocol
1. The unit should be powered on while the vehicle is in a level orientation and kept stationary.
2. After power on wait 5 minutes for the temperature and filter to stabilise.
3. Ensure that the device has a position fix, either from a GNSS receiver, or using the External Position and
Velocity packet #44 or the External Position packet #45, before proceeding.
4. Send the 10.5.9 Magnetic Calibration Configuration Packet
Calibration.
5. Whilst keeping as level as possible, rotate the vehicle in either direction through one and a quarter full
rotations. In a car this can be achieved by driving in one and a quarter circles.
6. Read the 10.5.10 Magnetic Calibration Status Packet
successfully. If not successful, send the
action Cancel, wait 2 minutes and repeat from step 4.
v2.4
to ensure that the calibration completed
10.5.9 Magnetic Calibration Configuration Packet
Page 44
with the action Start 2D Magnetic
with the
2024-12-17