Specifications

M7 GX Technical Manual 40 Raveon Technologies Corp.
position. These parameters are programmable, and may be re-configured based
upon the type of system they are used in.
6.9. Local NMEA data from the internal GPS
The M7 GPS transponders and the Atlas PL personal locators may be configured
to output NMEA 0183 GPS messages from its internal GPS receiver. For GPS
tracking, these GPS transponders can receive GPS position reports from other
radios, and they may also be configured to output their own GPS location via their
serial port.
Following is a list of the NMEA messages that are available (as of revision C2 of
the Firmware).
NMEA
Message
Bit Number
(zero based)
Bit Mask
(hex format / decimal)
GGA
0
0×001 / 1
GLL
1
0×002 / 2
RMC
9
0×100 / 256
Once you set the “GPS Mode” of the radio using the GPS X command, you can
change the NMEAMASK parameter to modify with of the NMEA sentences will
come out the serial port.
For example, to have only the RMC sentence come out the serial port, use the
following command”
NMEAMASK 256
To have the GGA and GLL come out the serial port use this command:
NMEAMASK 3
The NMEAMASK parameter is the sum of all of the decimal values of the individual
bits corresponding to the NMEA messages.
7. Installation
1. Secure the RV-M7 modem using the mounting holes on the side flanges of
the unit.
2. Connect a DC power source to the DC IN connection on the front of the
modem. Use the supplied cable, or 18AWG wire, and connect the RED wire
to +, and the black wire to – (ground). The black wire and the case of the
RV-M7 should be connected to earth ground.