NMEATALKER

Sets the NMEA talker ID

Platform:

OEM719, OEM729, OEM7500, OEM7600, OEM7700, OEM7720, PwrPak7, CPT7, CPT7700, SMART7, SMART2

This command is used to alter the behavior of the NMEA talker ID. The talker is the first 2 characters after the $ sign (e.g. $XXGST) in the log header of the NMEA logs. The logs affected by the NMEATALKER command are GPHDT, GPGLL, GPGRS, GPGSA, GPGST, GPGSV, GPRMC, and GPVTG.

On SPAN systems, the GPGGA position is always based on the position solution from the BESTPOS log which incorporate GNSS + INS solutions as well.

When NMEATALKER is set to GP, the NMEA messages include information only about the GPS satellites that have a 'GP' talker solution, even when the receiver is tracking multi-constellation and with SPAN enabled.

When NMEATALKER is set to AUTO, the NMEA Talker ID changes as per the constellations enabled on the receiver. When there is one constellation in the solution and SPAN is disabled, the NMEA Talker ID is output as: GP for GPS, GL for GLONASS, GA for Galileo, and GB/BD for BeiDou (see NMEABEIDOUTALKER command). If more than one constellation is in the solution, the NMEA Talker ID is output as GN with the exception of GPGSV.

With SPAN enabled, the logs change theirs IDs to IN in single and multi-constellation use cases, except the GPGSA, GPGRS, GPHDT logs, which report a GN talker ID, and GPGSV.

For the GPGSV message with a single constellation in the solution, the output is its respective talker ID. When it is a multi-constellation solution, multiple sentences are output with their respective talker IDs. For example, if both GPS and GLONASS satellites are in the solution, two different sentences with GP and GL are output.

Message ID: 861

Abbreviated ASCII Syntax:

NMEATALKER id

Factory Default:

NMEATALKER gp

ASCII Example:

NMEATALKER auto

Field	Field Type	ASCII Value	Binary Value	Description	Format	Binary Bytes	Binary Offset
1	Command header	-	-	NMEATALKER header This field contains the command name for abbreviated ASCII or the message header for ASCII (see page 1) or Binary (see page 1).	-	H	0
2	ID	GP	0	GPS (GP) only	Enum	4	H
		AUTO	1	GPS, GLONASS, Galileo, BeiDou, NavIC and/or QZSS

The NMEATALKER command only affects NMEA logs that are capable of a GPS output. For example, GLMLA is a GLONASS-only log and the output will always use the GL talker. Table: NMEA Talkers shows the NMEA logs and whether they use GPS (GP), GLONASS (GL), Galileo (GA), BeiDou (GB/BD), NavIC (GI), QZSS (GQ) or combined (GN) talkers with NMEATALKER AUTO.

NMEA Talkers

Log	Talker IDs
GLMLA	GL
GPALM	GP
GPGGA	GP
GPGLL	GA or GB/BD or GI or GL or GN or GP or GQ
GPGRS	GA or GB/BD or GI or GL or GN or GP or GQ
GPGSA	GA or GB/BD or GI or GL or GN or GP or GQ
GPGST	GA or GB/BD or GI or GL or GN or GP or GQ
GPGSV	GA or GB/BD or GI or GL or GP or GQ
GPRMB	GA or GB/BD or GI or GL or GN or GP or GQ
GPRMC	GA or GB/BD or GI or GL or GN or GP or GQ
GPVTG	GA or GB/BD or GI or GL or GN or GP or GQ
GPZDA	GP

Which BeiDou NMEA Talker ID, GB or BD, is used in NMEA logs is determined by the setting in the NMEABEIDOUTALKER command.