User's Manual

RV-M50-EC Technical Manual
13
3. Speed
See the command section for details on how to configure these values.
Report Format
A number of output report formats are available, with the most common being $PRAVE, a customized
format for wireless GPS transponders. See the OUTPUT command for more detail.
Local Position Information
The NMEAOUT, NMEARATE and NMEAMASK commands will configure the unit to output its GPS
position locally over the user serial port.
Deep Sleep
Use the TRIGSLEEP command to configure deep sleeping of the radio.
3.6 Data Reception
Serial Port Data
When the modem receives data over the air, it checks it for errors, and if it is error-free, it will send it
out the serial port. Again, the serial port may be set to any baud rate the user wishes, and the radio
receiver and transmitter will continue to operate independently of the baud rate.
GPS Position and Status
When the modem receives a position report and status from another modem, it will send this
information out the serial port, formatted in Raveon’s $PRAVE message format.
Change the position report output format with the OUTPUT x command. Enable/disable the local GPS
NMEA data with the NMEAOUT x command (0 off, 1 on)
The position/status messages that the modem is able to send out of its serial port are:
Message
Format
Description
OUTPUT x
Parameter/setting
$GPWPL
NMEA WayPoint List. This message is commonly used to
share waypoint locations among GPS units. The modem
can output this message when it receives a position report.
A GPS display connected to it, should put a waypoint on its
screen, and in its database, at reported location.
OUTPUT 3
$PRAVE
Raveon Position & Satus. This message is used by Raveon
and third-party applications for tracking location and status
information.
OUTPUT 1
$GPTLL
NMEA Target Lat Long. This message is commonly sent by
marine RADAR receivers to notify plotting devices of the
OUTPUT 2