Table of Contents
Advertisement
V. Set it to a dash "-" to disable the prefix string. If a prefix is programmed into the
RV-M7, it will add the prefix characters whenever it outputs the ID in a $GPWPL
message. For example, if the prefix is set to the phrase "Car", the ATLAS PL will
output the following message when it receives a position report from RV-M7
Transponder with ID 0003.
$GPWPL,4917.16,N,12310.64,W,Car3*65
And on a GPS display connected to the RV-M7, the waypoint will show up at the
correct lat/lon with the waypoint name "Car3". In most all GPS receivers, this
waypoint will also be added to its internal database of waypoints.
13.4.
$PRAVE Raveon Proprietary Message, Location-Status
The $PRAVE message is sent out the ATLAS PL when it is configured for GPS 2
mode of operation. This mode is typically used with the RavTrack PC program, or
other computer programs that can process position and status information. It is
sent at 38.4K bytes/second out the serial port.
Along with ID and position information, it contains a host of other status
information. The length of this message may exceed he standard NMEA limit of 79
characters. Any product or software that uses this message must take this into
account.
Following is a list of the fields sent in this message
Field
Usage
$PRAVE
1
From ID
2
To ID
3
Latitude
4
Longitude
5
UTC time
6
GPS Status
7
Num Satellites
8
Altitude
9
Temperature
10
Voltage
11
IO status
12
M7 PL Technical Manual
Comments
Raveon Proprietary Header
The ID of the transponder that transmitted its position over the air. It
is a decimal number, 0 – 9999.
The ID that this position report was sent to. It is a decimal number, 0
– 9999.
dddmm.mmmm format. It is signed. + is north, - is south. No sign
means north. Note: typically there are 4 decimal places, but as few
as 0 decimal places are possible. Null field if no GPS lock. Leading
zeros may be suppressed in the ddd field.
dddmm.mmmm format. It is signed. + is east, - is west. No sign
means east. Note: typically there are 4 decimal places, but as few as
0 decimal places are possible. Null field if no GPS lock. Leading
zeros may be suppressed in the ddd field.
The UTC time at the time the transmission was made. Hhmmss
format. Null field if no GPS lock.
0=not valid position. 1=GPS locked and valid position. 2=WAAS
operation.
The number of satellites in view
The altitude in meters. Null field if no GPS lock.
The internal temperature of the RV-M7 in degrees C. Typically this is
5-20 degrees above ambient.
Input voltage to the device that sent this position.
A decimal number representing the binary inputs.
43
Raveon Technologies Corp.
Advertisement
Table of Contents
