ProNav Norway – a
Company
page 65
Rev.1
10.02.2020
NMEA 0183 Messages
,
Continued
Notes:
•
The GP of the message is the talker ID
•
You can change the message header for the HDG, HDM, HDT, and ROT messages to
either GP or HE uses the $JATT,NMEAHE command
−
To preface these messages with GP, issue the following command:
$JATT,NMEAHE,0<CR><LF>
−
To preface these messages with HE, issue the following command:
$JATT,NMEAHE,1<CR><LF>
•
GPGRS, GPGSA, GPGST, and GPGSV support external integrity checking; synchronize
with corresponding fix data (GPGGA or GPGNS)
•
For information on outputting roll, pitch, and heave data in one message refer to the
Hemisphere GNSS Technical Reference Manual
•
HBT is sent every 30 seconds
•
After 60 seconds, a heading loss warning is escalated to an alarm
•
Silence timeout is 30 seconds
•
THS message definition (from IEC61162-1 ed5): THS – True heading and status
•
$HETHS,x.x,a*hh<CR><LF>
•
x.x Heading, degrees true
•
a Mode indicator (This field should not be null): A = Autonomous, E = Estimated (dead
reckoning), V = Data not valid (including standby)
•
50Hz output requires 50Hz-capable firmware plus 50Hz activation
For more information on the $JATT,NMEAHE command refer to the
