Velocity Edge GX440 Specifications download pdf (Page 48)

MP 700 Series GPS AT Command Reference

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!MPGPSNMEA=

[<RMC>],[<GGA>],

[<GLL>],[<VTG>],

[<GSV>],[<GSA>],

[<ZDA>]

!MPGPSNMEA?

Set NMEA messages

Sets which NMEA messages are generated by the GPS module when in NMEA

mode. (See !MPGPSRESET.)

Note: This command is only available on modems with firmware version 2.0 or

greater.

The NMEA protocol includes several different message types, of which these

are supported.

GGA—Global positioning system fix data

GLL—Global position / latitude and longitude

GSA—GPS DOP (Dilution of Precision) and active satellites

GSV—Satellites in view

RMC—Recommended minimum specific GPS/transit data

VTG—Track made good and ground speed

ZDA—Time and date

To enable a message, set the parameter to “1”; to disable, set the parameter to

“0”. For example:

<GGA>=0 disables the Global positioning system fix data message

<GGA>=1 enables the Global positioning system fix data message

Messages are separated by <LF><CR>. By default, the GGA, VTG, and ZDA

messages are generated, and these three messages must be enabled in order

for Watcher to display GPS information. See the NMEA web site,

www.nmea.org to obtain the standards documents that provide the message

formats.

!MPGPSNMEA? returns the setting, showing which messages are currently

enabled.

!MPGPSRESET=[<prot

ocol>]

Reset GPS module

The MP 700 Series GPS has an embedded Trimble SQ GPS module.The

module supports TAIP/TSIP (Trimble ASCII Interface Protocol/Trimble Standard

Interface Protocol) and NMEA (National Marine Electronics Association).

!MPGPSRESET restarts the GPS module setting the protocol.

The <protocol> value determines the protocol in use following the reset:

• <protocol>=0 TAIP (default)

• <protocol>=1 NMEA

Table 3-9: Command Reference Table (ASCII Alphabetic)

Command Description

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 117 118

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Velocity Edge GX440 Specifications Page 48

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