DMU380SA Series
User’s Manual
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Doc# 7430-0026 Rev. 01
Page 22
Figure 13.
DMU380SA Series Hardware Block Diagram
Figure 14 shows the software block diagram. The 6-DOF inertial sensor cluster data is
fed into a high speed 200Hz signal processing chain. These 6-DOF signals pass through
one or more of the processing blocks and these signals are converted into output
measurement data as shown. Measurement data packets are available at fixed continuous
output rates or on a polled basis. The type of measurement data packets available depends
on the unit type according to the software block diagram and Table 6. Aiding sensor data
is used by an Extended Kalman Filter (EKF) for drift correction in the INS, AHRS and
VG Series products. Built-In-Test and Status data is available in the measurement packet
or via the special Status Packet T0.
As shown in the software block diagram, the DMU380SA Series has a unit setting and
profile block which configures the algorithm to user and application specific needs. This
feature is one of the more powerful features in the DMU380SA Series architecture as it
allows the DMU380SA Series to work in a wide range of commercial applications by
settings different modes of operation for the DMU380SA Series.
6-DOF Sensor
Cluster
X / Y / Z
Gyros
X / Y / Z
Accelerometers
High-Speed
Sampling &
+
Sensor
Compensation /
Filtering
+
Navigation &
Attitude
Kalman Filter
RS-232
RS-422
Port
System Digital Outputs and Inputs
(Pins 3, 4, 5, 6)
MEMSIC Serial Protocol
X / Y / Z Acceleration
Roll / Pitch / Yaw Rate
X / Y / Z Magnetic Fields (INS/AHRS only)
Roll / Pitch / Yaw Angle
Position / Velocity (NAV only)
Temperature
Sensor
X / Y / Z
Magnetometers
GPS Receiver
(WAAS)
INS only
GPS Antenna INS only
Optional use (Pins 4, 6)
(when configured as RS-232)
External GPS Input (VG/AHRS)
Sync 1 KHz Pulse
External GPS 1 PPS Input
Pin 8
