DMU380SA Series
User’s Manual
________________________________________________________________________
Doc# 7430-0026 Rev. 01
Page 52
This command allows the user to poll for both measurement packets and special purpose
output packets
including ‘T0’, ‘VR’, and ‘ID’
.
GP Payload Contents
Byte Offset
Name
Format
Scaling
Units
Description
0
requestedPacketType
U2
-
-
The requested packet
type
Refer to the sections below
for Packet Definitions sent in response to the ‘GP’ command
7.2.2
Algorithm Reset Command
Algorithm Reset (‘AR’ = 0x4152)
Preamble
Packet Type
Length
Payload
Termination
0x5555
0x4152
0x00
-
<CRC (U2)>
This command resets the state estimation algorithm without reloading fields from
EEPROM. All current field values will remain in affect. The unit will respond with an
algorithm reset response.
7.2.3
Algorithm Reset Response
Algorithm Reset (‘AR’ = 0x4152)
Preamble
Packet Type
Length
Termination
0x5555
0x4152
0x00
<CRC (U2)>
The unit will send this packet in response to an algorithm reset command.
7.2.4
Calibrate Command
Calibrate (‘WC’ = 0x5743
)
Preamble
Packet Type
Length
Payload
Termination
0x5555
0x5743
0x02
<WC payload>
<CRC (U2)>
This command allows the user to perform various calibration tasks with the DMU380SA
Series. See the calibration command table below for details. The unit will respond
immediately with a calibrate response containing the
calibrationRequest
received or an
error response if the command cannot be performed.
WC Payload Contents
Byte Offset
Name
Format
Scaling
Units
Description
0
calibrationRequest
U2
-
-
The requested calibration
task
Currently, magnetic alignment is the only function supported by the calibrate command.
There are two magnetic alignment procedures supported; (1) magnetic alignment with
automatic yaw tracking termination, and magnetic alignment without automatic
termination.
calibrationRequest
Description
0x0009
Begin magnetic alignment
without automatic termination. Rotate vehicle
