AHRS400 Series User’s Manual
Page 26 Doc# 7430-0004-01 Rev. A
then install the AHRS in a vehicle (for instance), and the vehicle is
magnetic, you will still see errors arising from the magnetism of the vehicle.
7.2 Command List
Command Start Soft Iron Calibration
Character(s) Sent s
Response S
Description
This command starts the soft iron calibration.
The AHRS will remain in calibration mode until
it receives the "u" command. While in
calibration mode, the AHRS should be rotated
through at least one complete turn (360° of
rotation) with the system basically level.
Command End Soft Iron Calibration
Character(s) Sent u
Response U
Description
This command ends the soft iron calibration
process. The AHRS will store the soft iron
calibration constants in its EEPROM. The
calibration constants will be applied to all
subsequent magnetic measurements.
Command Clear Hard Iron Calibration
Character(s) Sent h
Response H
Description
This command clears the hard iron calibration
constants stored in the AHRS EEPROM. The
calibration constants will be set to zero.
Command Clear Soft Iron Calibration
Character(s) Sent t
Response T
Description
This command clears the soft iron calibration
constants stored in the AHRS EEPROM. The
calibration constants will be set to zero.
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