H220 Integrator Guide
Appendix A- FAQ
Page A4
Am I able to have the H220 output different NMEA messages through multiple ports?
Yes, different NMEA messages can be sent to the serial ports you choose. These NMEA
messages may also be at different update rates. A high enough baud rate is needed to transmit
all the data; otherwise, some data may not be transmitted.
How can I determine the current configuration of the H220?
The $JSHOW command will request the configuration information from the H220. The
response will be similar to:
$>JSHOW,BAUD,19200
$>JSHOW,BIN,1,5.0
$>JSHOW,BAUD,4800,OTHER
$>JSHOW,ASC,GPGGA,1.0,OTHER
$>JSHOW,ASC,GPVTG,1.0,OTHER
$>JSHOW,ASC,GPGSA,1.0,OTHER
How can I be sure the configuration will be saved for the subsequent power cycle?
Query the receiver to make sure the current configuration is correct by issuing a $JSHOW
command. If not, make the necessary changes and reissue the $JSHOW command. Once the
current configuration is acceptable, issue a $JSAVE command and wait for the receiver to
indicate the save is complete. Do not power off the receiver until the “save complete” message
appears.
How do I change the baud rate of a port from that port?
Connect at the current baud rate of the H220 port and then issue a $JBAUD command to
change the port baud rate to the desired rate. Now change the baud rate in your application to
the desired rate.
What is the best software tool to use to communicate with the H220 and configure it?
Hemisphere GNSS uses two different software applications:
SLXMon
- Available at www.hgnss.com. This application is a very useful tool for
graphically viewing tracking performance and position accuracy, and for recording data.
It can also configure message output and port settings. SLXMon runs on Windows 95 or
higher.
PocketMax4 -
Available at www.hgnss.com. Similar to SLXMon, you can use this
application to graphically view tracking performance and position accuracy, record data,
and configure message output and port settings. PocketMax4 runs on multiple Windows
platforms using the Windows .NET framework.
