Globalsat ET-314 GPS Engine Board [10/22] Gll geographic position latitude longitude

ET-314AC

High Performance GPS Engine Board

2010/4/1

- 10 -

Note – A valid status is derived from all the parameters set in the software. This includes the

minimum number of satellites required, any DOP mask setting, presence of DGPS corrections,

etc. If the default or current software setting requires that a factor is met, then if that factor is not

met the solution will be marked as invalid.

GLL - Geographic Position-Latitude/Longitude

Note – Fields marked in italic red apply only to NMEA version 2.3 (and later) in this NMEA

message description

Table A-3 contains the values for the following example:

$GPGLL,3723.2475,N,12158.3416,W,161229.487,A,A*41

Table A-3 GLL Data Format

Name Example Units Description

Message ID $GPGLL GLL protocol header

Latitude 3723.2475 ddmm.mmmm

N/S Indicator n N=north or S=south

Longitude 12158.3416 dddmm.mmmm

E/W Indicator W E=east or W=west

UTC Position 161229.487 hhmmss.sss

Status A A=data valid or V=data not valid

Mode A A=Autonomous, D=DGPS, E=DR

N=Output Data Not Valid

Checksum *41

<CR><LF> End of message termination

GSA - GNSS DOP and Active Satellites

Table A-4 contains the values for the following example:

$GPGSA,A,3,07,02,26,27,09,04,15,,,,,,1.8,1.0,1.5*33

Table A-4 GSA Data Format

Name Example Units Description

Message ID $GPGSA GSA protocol header

Manual-forced to operate in 2D or 3D mode

Mode 1 A

2Dautomatic-allowed to automatically switch

2D/3D