H220 Integrator Guide Chapter 3-Setup and Configuration Page 25 of 28
Setup and Configuration
This chapter provides H220 operation information, such as communicating with the
H220, firmware, and configuration defaults.
Powering the H220
The H220 is powered by a 3.3 VDC power source. Once you connect appropriate
power, the H220 is active. Although the H220 proceeds through an internal startup
sequence upon application of power, it is ready to communicate immediately.
Communicating with the H220
The H220 features four primary serial ports (Port A, Port B, Port C, Port D) that you
can configure independently from each other. You can configure the ports for any
combination of NMEA 0183, binary, and RTCM SC- 104 data. The usual data output
is limited to NMEA data messages as these are industry standard.
Configuring the H220
You can configure all aspects of H220 operation through any serial port using
proprietary commands. For information on these commands refer to the Hemisphere
GNSS Technical Reference Guide.
You can configure the following:
Select one of the two firmware applications
Set communication port baud rates
Select which messages to output on the serial ports and the update message rate
Set various receiver operating parameters
For a complete list of commands and messages refer to the Hemisphere GNSS Technical
Reference Guide.
To issue commands to the H220 you will need to connect it to a terminal program
or Hemisphere GNSS’ software applications (SLXMon or PocketMax4).
Firmware
The software that runs the H220 is often referred to as firmware since it operates at
a low level. You can upgrade the firmware in the field through any serial port as
new versions become available.
Note: Install the antenna outdoors so it has a clear view of the entire sky. If you place the
antenna indoors near a window, you will likely not track enough satellites. With a properly
installed antenna, the H220 provides a position within approximately 60 seconds.
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