V101 and V111 GPS Compass
Quick Reference Guide
Part Number: 875-0251-000 Rev A1
Installation Considerations
Proper location is important to obtain a high-precision
GPS reading. Choose an installation location using either
the pole or fixed mount where the V101/111:
• Has a clear view of the sky
• Is away from other electronics and antennas
• Has enough cable to reach a power source
• Is on a level plane
Refer to the V101 and V111 GPS Compass User Guide for
detailed installation instructions.
NMEA 0183 and other messages
Message
Info
Typ e
Description
IEC
Approved
Message
$GPDTM P Datum reference Yes
$GPGGA P GPS position and fix data Yes
$GPGLL P Geographic position - lat/
long
Yes
$GPGNS P GNSS position and fix data Yes
$GPGRS S GNSS range residual
(RAIM)
Yes
$GPGSA S GNSS DOP and active
satellites
Yes
$GPGST S GNSS pseudo range error
statistics and position
accuracy
Yes
$GPGSV S GNSS satellites in view Yes
$GPHDG H Provides magnetic
deviation and variation for
calculating magnetic or
true heading
Yes
$GPHDM H Magnetic heading (based
on GPS-derived heading
and magnetic declination)
No
$GPHDT H GPS-derived true heading Yes
$GPHEV H Heave value (in meters) Yes
$GPRMC P Recommended minimum
specific GNSS data
Yes
$GPROT H GPS-derived rate of turn
(ROT)
Yes
$GPRRE S Range residual and
estimated position error
message
Yes
$GPVTG V COG and ground speed Yes
$GPZDA V Time and date Yes
$PCSI,1 S Beacon status No
$PSAT,GBS S Satellite fault detection
(RAIM)
Yes
$PSAT,HPR H Proprietary NMEA
message that provides
heading, pitch, roll, and
time in single message
No
$PSAT,INTLT H Proprietary NMEA
message that provides the
pitch and roll
measurements from the
internal inclinometers (in
degrees)
Yes
$RD1 S SBAS diagnostic
information
Yes
Binary messages
$JBIN
Message
Description
$JBIN
Message
Description
1 GPS position 95 Satellite
ephemeris data
2 GPS DOPs 96 Code and
carrier phase
80 SBAS 97 Processor
statistics
93 SBAS
ephemeris data
98 Satellites and
almanac
94 Ionosphere and
UTC conversion
parameters
99 GPS
diagnostics
Parameters specific to $JATT command
Parameter Description Query Specify
COGTAU Set/query COG time
constant (0.0 to 3600.0 s)
XX
CSEP Query antenna separation X
GYROAID Enable/disable gyro X X
HBIAS Set/query heading bias
(-180.0º to 180.0º)
XX
HIGHMP Set/query the High
Multipath setting for use in
poor GPS environments
XX
HRTAU Set/query time constant (0.0
to 3600.0 s)
XX
HTAU Set/query heading time
constant (0.0 to 3600.0 s)
XX
LEVEL Query or enable/disable
level operation
XX
MSEP Manually set or query
antenna separation
XX
NEGTILT Query or enable/disable
negative tilt
XX
NMEAHE Query for the message
headers or change the HDG,
HDM, HDT, and ROT
message headers between
GP and HE
XX
PBIAS Set/query pitch/roll bias (-
15.0º to 15.0º)
XX
PTAU Set/query pitch time
constant (0.0 to 3600.0 s)
XX
ROLL Query or configure for roll
or pitch GPS orientation
XX
SEARCH Force a new GPS heading
search
X
SPDTAU Set/query speed time
constant (0.0 to 3600.0 s)
XX
TILTAID Query or enable/disable
accelerometer, pre-
calibrated
XX
TILTCAL Calibrate accelerometers X