Moog Crossbow NAV440 Series - Manual (Page 68)

Page 68
NAV440 User Manual
7430‐0131‐01 Rev. F
Table 26 Calibration Request
calibrationRequest Description
0x0009 Begin magnetic alignment without automatic termination.
Rotate vehicle through >360 degrees yaw and then send 0x000B
calibration request for termination.
0x000B Terminate magnetic alignment. The unit will send a CC respons
containing the hard‐iron and soft‐iron values. e
To accept the parameters, store them using the write magnetic
calibration command.
0x000C Begin magnetic calibration with automatic termination. Rotate the unit
through 380 degrees in yaw.
oft‐iron The unit will send a CC response containing the hard‐iron and s
values upon completion of the turn.
To accept the parameters, store them using the write magnetic
calibration command.
0x000E Write magnetic calibration. The unit will write the parameters to
EEPROM and then send a calibration response.
Calibrate Acknowledgement Response
Table 27 Calibrate
Calibrate (‘WC’ = 0x5743)
Preamble Packet Type Length Payload Termination
0x5555 0x5743 0x02 <WC payload> <CRC (U2)>
T
he unit will send this packet in response to a calibrate request if the procedure can be performed or initiated.
Table 28 WC Payload
WC Payload Contents
Byte
ffset O
Name Format Scaling Units Description
0 calibrationRequest U2 — — The requested calibration task
Calibration Completed Parameters Response
Table 29 Calibrate Completed
Calibrate Completed (‘CC’ = 0x4343)
Preamble Packet Type Length Payload Termination
0x5555 0x4343 0x08 <CC payload> <CRC (U2)>