P306/P307 Integrator’s Guide
Chapter 3-Operation
Page 24 of 39
You can have two firmware applications loaded on the receiver; however, you can only operate
one at a time.
The P306/P307 currently ships with Hemisphere GNSS’ multi-function application (MFA) Athena
firmware. Refer to the
Hemisphere GNSS Technical Reference
for additional information on how
to identify the firmware application on the P306/P307.
Configuring the Data Message Output
The P306/P307 features three primary bidirectional ports (Ports A, B and C) and a differential-only
port (Port D). You can configure messages for all ports by sending proprietary commands to the
P306/P307 through any port. For a complete list of commands and messages refer to the
Hemisphere GNSS Technical Reference
.
‘THIS’ Port and the ‘OTHER’ Port
Both Port A and Port B use the phrases “THIS” and “OTHER” when referring to themselves and
each other in NMEA messages.
‘THIS’ port is the port you are currently connected to for inputting commands. To output data
through the same port (‘THIS’ port) you do not need to specify 'THIS' port. For example, when
using Port A to request the GPGGA data message be output at 5 Hz on the same port (Port A),
issue the following command:
$JASC,GPGGA,5<CR><LF>
The ‘OTHER’ port is either Port A or Port B, whichever one you are not using to issue commands.
If you are using Port A to issue commands, then Port B is the ‘OTHER’ port, and vice versa. To
specify the ‘OTHER’ port for the data output you need to include 'OTHER' in the command. For
example, if you use Port A to request the GPGGA data message be output at 5 Hz on Port B,
issue the following command:
$JASC,GPGGA,5,OTHER<CR><LF>
When using Port A or Port B to request message be output on Port C, you must specifically
indicate (by name) you want the output on Port C. For example, if you use Port A to request the
GPGLL data message be output at 10 Hz on Port C, issue the following command:
$JASC,GPGLL,10,PORTC<CR><LF>
Saving the P306/P307 Configuration
Each time you change the P306/P307’s configuration you may want to save the configuration so
you do not have to reconfigure the receiver each time you power it on. To save the configuration,
issue the $JSAVE command to the P306/P307 using a terminal program such as Hemisphere
GNSS’ applications (SLXMon or PocketMax3™). The P306/P307 will take approximately five
seconds to save the configuration to non-volatile memory and will indicate when the configuration
has been saved. Refer to the
Hemisphere GNSS Technical Reference
.
Using Port D for RTCM Input
Port D has been optimized to interface with Hemisphere GNSS’ SBX-4 operates at 9600 baud (8
data bits, no parity and 1 stop bit – 8-N-1) to configure beacon board and the LX-3 Atlas receiver .
To configure the P306/P307 to use Port D, issue the following command:
$JDIFF,BEACON<CR><LF>
Summary of Contents for P306
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