Javad HPT404BT Operator's Manual page 29

be configured to send the NMEA GGA messages to NTRIP caster taking NMEA from the local GPS
receiver (connected to the UART, USB or BT) or using predefined NMEA GGA message saved in the
configuration file. The RTN command is used to configure, control and monitor the NTRIP client service.
To start the NTRIP client service automatically after next boot the RTN auto running feature can be used
(refer to "RTN AUTORUN" command's description).
Example of NTRIP client configuration:
Let's assume we need to download RTN corrections from NTRIP caster which has the following
parameters:
• IP address - 78.43.52.12;
• Port – 2101;
• Mount point AUT10;
• Login – user;
• Password – pswd;
NMEA GGA messages are required by NTRIP caster.
Suppose the NTRIP client should read the NMEA GGA messages from USB, send them to
NTRIP caster then download RTN corrections from caster and route them to USB port.
The following is step by step configuration of HPT404BT to configure and run described NTRIP
client service.
Select the NTRIP client as an active RTN service
Set the host name/IP address to connect
Set the host port of remote machine
Set login and password to pass authentication on remote NTRIP caster. RTN LOGIN user
Set the Mount point
Set data routing type to "GSMGPRS<->USB"
Disable the predefined NMEA GGA messages (the NMEA GGA
messages are read from USB port)
Start NTRIP client service
The execution of "RTN CONNECT 1" command starts connecting process of NTRIP client and
shows the progress of connecting. The following is the reported progress when the NTRIP client
connected and authenticated on the host machine successfully:
RTN CONNECT 1
Connecting........
Initializing GSM module..................
PIN code authentication..
Network registration..........
Activating GPRS context................
Socket Dialing..
Connected, Authenticated
After successful authentication the unit should be switched to data mode to start data routing as it
is configured.
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RTN TYPE 1
RTN HOSTNAME 78.43.52.12
RTN HOSTPORT 2101
RTN PASSWORD pswd
RTN MPOINT AUT10
DPORT ROUTE 5
RTN NMEA NONE
RTN CONNECT 1
NTRIP client
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