KVH Industries 1775 IMU User Manual

56-0298 Rev. B
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Page 42 of 77
Table 8-4 below is not the recommended steps for programming, but can be followed for
discussion on how the unit behaves. For an understanding of the interaction of certain
commands follow along the steps below, in sequence.
Table 8-4: 1775 IMU Command Behavior
Commands
(CR/LF not shown)
Responses
Discussion and Unit Status
=config,1
CONFIG,1
The user enters Configuration
Mode; unit stops output of binary
data.
=msync,ext
MSYNC,EXT
The user sets unit to external
MSYNC mode; unit will now
configure to output one set of data
for each external MSYNC input.
Output filtering of gyro and
accelerometer data is
automatically set to Uniform
Averager type filtering. There is no
data output yet because the unit is
still in configuration mode.
?filttype,a
FILTTYPE,A,AVE
Confirms the Averager type is
active for accelerometer data.
?filttype,g
FILTTYPE,G,AVE
Confirms the Averager type is
active for gyro data.
=filttype,g,butter
FILTTYPE,G,BUTTER
Gyro data filter reconfigured from
Averager to the default
Butterworth 8
th
order and at 1/2 the
configured data rate (whatever
was set previously).
=dr,1000
DR,1000
The user sets data rate to 1000
Hz; gyro filter recalculated to
Butterworth, 8
th
order at 500 Hz
cutoff. Still in external MSYNC
mode with output driven by user
supplied signal.
=filttype,g,butter,4,250
FILTTYPE,G,BUTTER,4,250
(* see errata note)
Gyro data filter set to Butterworth,
4
th
order at 250 Hz cutoff; Data
rate remains at 1000 Hz and
output is still driven by external
MSYNC.
=dr,100
DR,100
The user sets data rate to 100 Hz;
gyro filter recalculated to
Butterworth, 8
th
order at 50 Hz
cutoff. Accelerometer filter is still
the Averager type.

KVH Industries 1775 IMU Specifications

General

Brand	KVH Industries
Model	1775 IMU
Category	Measuring Instruments
Language	English