RV-Z50-E Quick Start
11
marine RADAR receivers to notify plotting devices of the
location of a RADAR target. The device can output this
message when it receives a position report from other
devices. 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 device. The icon name is the MYID
of the device that transmitted its position over the air.
$GPGGA
NMEA GPS Position Fix Data.
T
his message is the standard
position message from a GPS receiver.
NMEAOUT 1
$GPGSV
NMEA Satellites in view.
T
his message is the standard
message to indicate the number of satellites in view, and
their signal quality.
NMEAOUT 1
6.7
Local NMEA data from the internal GPS
The Z50 may be configured to output standard NMEA 0183 GPS messages from its internal GPS receiver.
For GPS tracking be configured to output their own GPS location via their serial port.
Following is a list of the NMEA messages that are available.
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.
6.8
Pass-Through Mode
Pass-Through Mode gives you direct control of the Sierra Wireless HL8548 module.
To enter Pass-Through Mode put the RV-Z50 into command mode, refer to section 5.2. Once in
command mode send the command ATPT.
To exit command mode, send the escape se+++.
