Specifications

AIRMAR

PB100 WeatherStation Technical Manual revision 1.007

NMEA 0183 TRANSMITTED SENTENCE

$GPVTG

Summary

NMEA 0183 standard Course Over Ground and Ground Speed.

Syntax

$GPVTG,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>*hh<CR><LF>

Fields

<1>

Course Over Ground, degrees True, to the nearest 0.1 degree

<2>

T = True

<3>

Course Over Ground, degrees Magnetic, to the nearest 0.1 degree

<4>

M = Magnetic

<5>

Speed Over Ground, knots, to the nearest 0.1 knot

<6>

N = Knots

<7>

Speed Over Ground, km/hr, to the nearest 0.1 km/hr

<8>

K = km/hr

<9>

Mode indicator:

A = Autonomous mode

D = Differential mode

E = Estimated (dead reckoning) mode

M = Manual input mode

S = Simulator mode

N = Data not valid

The only values transmitted by the WeatherStation for the Mode

indicator are A and N.

Default State

Enabled. Transmitted once per second.

Notes

This sentence is not available in the LB100.

This sentence may be enabled or disabled via the $PAMTC,EN,VTG command.

However, if the WeatherStation receives a VTG or RMC sentence from an

external GPS, then this sentence shall not be transmitted.