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KVH Industries 1775 IMU User Manual

KVH Industries 1775 IMU
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56-0298 Rev. B
This document contains proprietary information of KVH Industries, Inc. and neither this document nor said proprietary information shall be
published, reproduced, copied, disclosed, or used for any purpose without the express written permission of a duly authorized KVH
representative.
Page 16 of 77
Table 5-5: Normal Operating Mode Message Format C
Item
Byte Numbers
Description
Header
1-4
Always 0xFE81FF57 (transmitted 0xFE first)
Message Data
5-34
(refer to Table 5-6)
CRC (Cyclic
Redundancy Check)
35-38
(refer to Table 5-9)
TOTAL
38
Table 5-6: Normal Operating Mode Data Format C
Datum
Byte Numbers
Data
Type*
Units
Notes
X rotational data
5, 6, 7, 8
SPFP
Radians or
degrees,
selectable
MSB (Byte 4) is output first;
delta angle or rate of
rotation, selectable
Y rotational data
9, 10, 11, 12
SPFP
Radians or
degrees,
selectable
MSB (Byte 8) is output first;
delta angle or rate of
rotation, selectable
Z rotational data
13, 14, 15, 16
SPFP
Radians or
degrees,
selectable
MSB (Byte 12) is output
first; delta angle or rate of
rotation, selectable
X Acceleration
17, 18, 19, 20
SPFP
g
MSB (Byte 16) is output first
Y Acceleration
21, 22, 23, 24
SPFP
g
MSB (Byte 20) is output first
Z Acceleration
25, 26, 27, 28
SPFP
g
MSB (Byte 24) is output first
Temperature;
X, Y and Z
magnetic data
29, 30, 31, 32
The temperature and the three axes of the magnetic
field data are output in bytes 24-27 in a sequence
modulo of four (refer to Table 5-7).
Status
33
DISC
1 = valid data
0 = invalid data
(refer to Table 5-8)
Sequence number
34
UINT8
0-127
Increments for each
message and resets to 0
after 127
* SPFP = Single Precision Floating Point (IEEE-754 Big-endian format); DISC = Discrete Data; UINT8 =
Unsigned 8-bit integer; INT16 = Signed 16-bit integer
Table 5-7: Temperature and Magnetic Output Sequence (See Data Format C)
Modulo Sequence
Data Type
Units
Data Output
0
SPFP
°C or °F, selectable
Temperature
1
SPFP
Gauss
X axis magnetic data
2
SPFP
Gauss
Y axis magnetic data
3
SPFP
Gauss
Z axis magnetic data
NOTE: Temperature is output as a single-precision float, but in earlier versions of software this may be reported
without fractional precision. Use the 100ths of degree configuration of the =TEMPUNITS command to increase
precision if needed.

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KVH Industries 1775 IMU Specifications

General IconGeneral
BrandKVH Industries
Model1775 IMU
CategoryMeasuring Instruments
LanguageEnglish