RV-Z50-E Technical Manual
18
4.8
Local NMEA data from the internal GPS
The ATLAS PT personal locator may be configured to output standard 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.
1.1
Pass-Through Mode
5
RV-M7 Diagnostic Provisions
5.1
Status and Statistics Command
RV-M7 diagnostic information is read using AT commands, while the unit is in Command Mode. Refer to
the section “User Serial Port Commands” to learn how to put the RV-M7 modem into Command Mode.
5.2
ATST Command
The ATST command will return the following information:
STATISTICS
Good RX Packets: nnn
(packets received over the air with no bit-errors and correct address)
With Bad CRCs: nnn
(over-the-air packets with bit errors that were discarded)
Bytes received: nnn
(number of bytes this modem received, and sent out its serial port)
Bytes transmitted: nnn
(number of bytes this modem received via the serial port, and transmitted
over the air)
