Specifications

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  LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT
4
Table 1: NMEA 0183 Regularly Transmitted Sentences
Sentence Description
Enabled
by Default
Maximum
Length
(chars)
$GPDTM Datum Reference No 47
$GPGGA GPS Fix Data



82
$GPGLL Geographic Position – Latitude/Longitude No 48
$GPGSA GNSS DOP and Active Satellites No 66
$GPGSV GNSS Satellites in View No 70
$HCHDG Heading, Deviation and Variation No 33
$HCHDT Heading relative to True North



19
$WIMDA
Meteorological Composite.
Barometric pressure, air temperature,
relative humidity, dew point, wind direction,
wind speed



81
$WIMWD
Wind Direction and Speed, with respect to
north
1
No 41
$WIMWV
(relative)
Wind Speed and Angle, in relation to the
centerline of the front of the vehicle
(relative)


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28
$WIMWV
(theoretical)
Wind Speed and Angle, in relation to the
centerline of the front of the vehicle
(theoretical)
1
No 28
$GPRMC
Recommended Minimum Specific GNSS
Data
No 74
$GPVTG Course Over Ground and Ground Speed



42
$WIVWR Relative Wind Speed and Angle No 41
$WIVWT True Wind Speed and Angle No
2
41
$YXXDR
(type A)
Transducer Measurements: wind chill, heat
index, and station pressure
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

74
$YXXDR
(type B)
Transducer Measurements:
vehicle/instrument attitude (pitch and roll)
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

43
$GPZDA Time and Date
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
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38
1
True wind data is provided in the $WIMWD and $WIMWV (theoretical) sentences if SOG/COG,
heading, and magnetic variation data are available from the internal GPS and compass.
2
$WIVWT True Wind Speed and Angle referenced to water is provided only if water referenced speed is
available via the NMEA 0183 input from an Airmar® Smart™ speed sensor.