Airmar LB150 - Manual (Page 26)

LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT 23
NMEA 0183 TRANSMITTED SENTENCE
$WI
VWR
Summary
NMEA 0183 Relative (Apparent) Wind Speed and Angle. For vehicle mounted
instruments, wind angle is in relation to the vehicle’s heading, and wind speed
measured relative to the moving vehicle. For stationary instruments, wind speed
and angle are relative to the sensor.
Syntax
$WIVWR,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>*hh
Fields
<1> Measured wind angle relative to the vehicle, 0 to 180°, left/right of
vehicle heading, to the nearest 0.1 degree
<2> L = left, or R = right
<3> Measured wind speed, knots, to the nearest 0.1 knot
<4> N = knots
<5> Wind speed, meters per second, to the nearest 0.1 m/s
<6> M = meters per second
<7> Wind speed, km/h, to the nearest km/h
<8> K = km/h
Default State
Disabled. Transmitted once per second if enabled.
Notes
This sentence may be enabled via the $PAMTC,EN,VWR command.