Company Confidential
24
Raveon Technologies Corp.
6.2.
Position Transmission
When the
RV-M29
transmits its position, it also reports other status information
such as voltage, input bits, temperature, velocity, and heading. All of these
parameters are compressed into a short data packet, and sent over the air in the
proper TDMA time slot. By default, each
RV-M29
is assigned a time slot, based
upon its ID. ID 1 is slot 1, ID 2 is slot 2…
Position/status reporting happens in one of 2 intervals.
A)
At the
TXRATE
setting. This is the transmit frequency interval setting. The
user configures
TXRATE
to be shortest acceptable interval between reports.
The factory default is 10 seconds.
IDLERATE
is used as a slow-reporting rate for parked vehicles, vehicles that have
no active trigger inputs, no proximity alerts, and that the user has programmed
them to require a minimum movement distance before they will report.
6.3.
Set the Transmission Report rate
Using the
TXRATE xx
command to set the report rate, in seconds, for the
RV-M29
transponder. For example, if you wish the RV-M29 to report every 5 minutes, set
the report rate to 300 seconds (
TXRATE 300
).
6.4.
GPS Position and Status Reception
When the
RV-M29
receives a position report and status from another
RV-M29
, it
will send this information out all connected telnet sessions that are in the
Communication Mode, formatted as configured with the
OUTPUT x
command. By
default, the output format is 0 (no position message sent out).
The position/status messages that the
RV-M29
is able to send out of its
Communication Mode telnet sessions are:
None
No position message output.
Output 0
disable the device from outputting
any message when a position report is received.
$PRAVE
Raveon Position & Satus.
Output 1
This message is sent out of the
RV-M29
when it is operating in the
GPS 2
mode. This message is used by third-party
and PC applications for tracking location and status information.
$GPTLL
NMEA Target Lat Long.
Output 2
T
his message is commonly sent by marine
RADAR receivers to notify plotting devices of the location of a RADAR target.
The
RV-M29
can output this message when it receives a position report from
other
RV-M29
transponders. A plotter or display connected to it that supports
the TLL message, should put an icon on its screen at the location specified by
the RV-M29. The icon name is the MYID of the RV-M29 that transmitted its
position over the air.
$GPWPL
NMEA Way-Point List.
Output 3
T
his message is commonly used to share
waypoint locations among GPS units. The
RV-M29
can output this message
when it receives a position report from other
RV-M29
transponders. A GPS
connected to it, should put a waypoint on its screen, and in its database, at the
location specified by the RV-M29.
