MTD2000 AT Command Guide R12
Confidential
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26 Appendix
26.1 NMEA Messages
26.1.1
GLL – Geographic Position (Latitude / Longitude)
It is for showing latitude and longitude, UTC time of fix and status.
Syntax:
$GPGLL,xxmm.dddd,<N|S>,yyymm.dddd,<E|W>,hhmmss.dd,S,M*hh<CR><LF>
xxmm.dddd
Latitude
xx = degrees
mm = minutes
dddd = decimal part of minutes
<N|S>
Either character N or character S,
N = North, S = South )
yyymm.dddd
Longitude
yyy = degrees
mm = minutes
dddd = decimal part of minutes
<E|W>
Either character E or character W, E = East, W = West
hhmmss.dd
UTC time
hh = hours
mm = minutes
ss = seconds
dd = decimal part of seconds
S
Status indicator
A = valid
V = invalid
M
Mode indicator
A=autonomous GNSS fix
D=differential GNSS fix
E=estimated/dead reckoning fix
N=no fix
Example:
$GPGLL,6016.3073,N,02458.3817,E,090110.10,A,A*61
Remarks:“*61” is the checksum of the example message and is calculated as described in
page 13 of NMEA 3.0.