Chapter 3 SPAN Operation
OEM7 SPAN Installation and Operation User Manual v14
104
Figure 28: Multi-Line IMU Body to Vehicle Calibration
The steps for the calibration routine are:
1. Apply power to the receiver and IMU.
2. Configure the SPAN system, see
SPAN Configuration for Receiver Cards
3. Ensure that an accurate lever arm has been entered into the system either manually or through a lever arm
calibration, see
4. Perform an initial system alignment using one of the methods described in
on page 95. Ensure the system reaches Solution Good.
5. Enable a new calibration using the
INSCALIBRATE
command, with the optional standard deviation target
omitted:
INSCALIBRATE RBV NEW
6. Start to move the vehicle. Drive a straight course, at a vehicle speed greater than 5 m/s (18 km/hr). A dis-
tance of approximately 250 meters is recommended.
To monitor the calibration, log
INSCALSTATUS
using the ONCHANGED trigger.
7. When the end of the available distance is reached, stop the vehicle. Halt the ongoing calibration by sending
the
INSCALIBRATE
command again:
INSCALIBRATE RBV STOP
8. At this point
INSCALSTATUS
will report a source status of CALIBRATED. Turn the vehicle around and