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2.5
Communication—RS232 Option
The HMR3000 communicates with an external host via RS232 or RS485 electrical standard through simple ASCII
character command strings. A host computer can direct operation of HMR300 with these commands. With the RS232
option a user friendly graphical interface is provided to direct operation of the compass.
RS232 Option
The Compass Module is supplied with PC Demo Interface, a software program that allows the user to configure
HMR3000 with the RS232 option. This program is for IBM PC compatible machines running MS Windows 3.11,
Windows 95 or Windows 97. PC Demo Interface allows the user to communicate between the HMR3000 and the PC.
This is used to configure the HMR3000, receive compass outputs, and to log and capture compass messages. PC Demo
also demonstrates the input/output options available, and is a great tool to learn about HMR3000.
2.6
Install PC Demo Interface
Enclosed is a CD Rom containing PC demo. Software is included.
Run Setup.exe from CD Rom.
The installation software will guide through the process.
Computer Requirements
Minimum:
Recommended:
Note: The Graphical output of the HMR3000 on PC Demo software may become sluggish if the PC has slow graphic
capability or if other applications are running in the background.
2.7
Getting data from HMR3000
Once the power and interface cables are connected and the software installed in your computer, begin to acquire compass
data from HMR3000.
Launch PC Demo Interface by double clicking the program icon in PC Demo Interface window.
Select the appropriate COM port and choose 19200 as the baud rate (factory setting).
Message box, identifying the Firmware Version, should appear.
This message indicates a successful installation and interface connection.
Activate Tune Parameters in the PC Demo Interface (from the Parameters menu or use the Tune button).
The compass is in RUN (Continuous) mode with NO messages coming out.
(Message rates for all the output sentences are set to 0 at the factory).
Set the message rate of HPR sentence to 825 (Tune Page \ Serial Output). Now the compass should output heading, pitch
and roll data at 825 sentences/min rate.
Activate Display \ View Interface, or Display \ Monitor NMEA Sentences to see the output.
Diagnostics \ View Log is another option to inspect compass data. Make sure the Log all messages (logging page in Diagnostics
\ Options menu) option is activated.
PC 486/33 MHz
Windows 3.1, Windows 95 or NT Operating System
VGA
2 Mb disk space (more for log file and captured data)
RS-232 serial port
P5/120 MHz
Windows 3.1, Windows 95 or NT Operating System
SVGA 1024 x 768
Microsoft Excel (5.0 or greater) for capture and export of data (if desired)
900240 Rev. B
3/01
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