Gsa - Gnss Dop And Active Satellites - Leica GPS1200 Series Technical Reference Manual

NMEA Message Formats
F.9
Syntax
Description of fields

GSA - GNSS DOP and Active Satellites

$--GSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,x.x,x.x,x.x*hh<CR><LF>
Field Description
$--GSA Header including talker ID
a Mode
M = Manual, forced to operate in 2D or 3D mode
A = Automatic, allowed to automatically change between 2D and 3D
x Mode
1 = Fix not available
2 = 2D
3 = 3D
xx Numbers of the satellites used in the solution. This field is repeated 12 times.
1 to 32 = PRN numbers of GPS satellites
33 to 64 = Numbers of WAAS and WAAS like satellites
65 to 96 = Slot numbers of GLONASS satellites
x.x PDOP
x.x HDOP
x.x VDOP
*hh Checksum
<CR> Carriage Return
GPS1200 1364