If set to the default mode of GPS only, the following NMEA commands are supported:
$GPGGA
– Basic GPS NMEA message that provides position and accuracy data
$GPGSA
– Detailed Dilution of Precision (DOP) and satellite tracking information
$GPGSV
– Provides detailed information on the satellites in view including location
and signal quality.
$GPRMC
– Provides only the recommended minimum data on positioning, velocity,
and time of the satellite.
$GPVTG
– Course over ground and the ground speed
If the modem is set up for GNSS, the following commands are also supported:
$GNGNS
– GNSS fix data. Provides position and accuracy data for GLONASS
satellites
$GNGSA
– Detailed Dilution of Precision (DOP) and satellite tracking information
for GLONASS satellites
$GLGSV
– Provides detailed information on the satellites in view including location
and signal quality for GLONASS satellites.
NMEA data is transmitted over the
GPS Interface
port as described in
Chapter 2 -
Installing your ZoomCell Modem
. To set up the commands and receive regular
positioning data you can use either the modem’s serial port, the
GPS Control Port
or
the
GPS Modem port.
Setting the Modem up for GPS
Now that we have described some of the different options available when using GPS,
we’ll walk you through a few examples.
•
To set the modem up using standalone GPS please continue below to
.
•
To set the modem up using A-GPS please see
.
•
To set up the modem to receive NMEA data please see
Using NMEA data
.
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