Airmar LB150 User Manual
Page 13
LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT
10
NMEA 0183 TRANSMITTED SENTENCE
$GP
GSA
Summary
NMEA 0183 standard GNSS DOP and Active Satellites.
Syntax
$GPGSA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,
<12>,<13>,<14>,<15>,<16>,<17>*hh<CR><LF>
Fields
<1>
M = Manual, forced to operate in 2D or 3D mode
A = Automatic, allowed to automatically switch 2D/3D
<2>
1 = Fix not available
2 = 2D fix
3 = 3D fix
<3>-<14>
ID numbers of satellites used in solution
<15>
Positional Dilution of Precision (PDOP). This field is null unless
the GPS has a 3D fix.
<16>
Horizontal Dilution of Precision (HDOP). This field is null unless
the GPS has either a 2D fix or a 3D fix.
<17>
Vertical Dilution of Precision (VDOP). This field is null unless
the GPS has a 3D fix.
Default State
Disabled. Transmitted once per second when enabled.
Notes
This sentence may be enabled via the $PAMTC,EN,GSA command.