OziExplorer - Com Port Problems Support
(Serial Port) Problems
We have a program available which may help you diagnose port problems. This
is a simple program which scans the ports on a PC and reports
their status. It also scans all the ports to see if there is a GPS attached.
You can use our
GpsPortChecker program to see if it
can find your GPS.
- If you are using a USB to Serial port converter or a plug-in card type GPS
(compact flash) or a Bluetooth GPS a virtual com port will be created. You must know the number
of the port which is created, if you do not the GpsPortChecker program
mentioned above may help locate the port number used.
- Make sure you do not have any other programs also trying to use the COM port. These may
include FAX programs, programs which interface to Palm Pilots and other PDA's,
terminal type programs (e.g. Hyperterminal). If you have been using a DOS terminal
program to read the output from the GPS you must not only exit the terminal program but
may also have to completely exit the DOS window to release the COM port.
- If you get the error from OziExplorer "Error Opening Com
Port" this means the port is in use by another program or does not exist.
Note that OziExplorer has not yet attempted to communicate with the GPS,
it does this only after it has successfully opened the COM port.
- It is possible to lock up the communication port on the GPS, so it is advisable to
turn the GPS off and on when attempting to establish communication to reset the port.
Com Port and
GPS won't communicate and I have used a Palm Pilot
- If you have a Palm Pilot and you have communication problems, ensure that the "Hot
Sync" is only active when the Palm Pilot is connected. You will need to check the
settings for the "Hot Sync" program, and make the Hot Sync feature to only run
when the Palm Pilot is running, and not run all the time. Adjusting this setting
will free up the COM port. While the Palm Pilot has control of the COM port, you
will not be able to establish communication.
- The Serial Port Driver used for communication with the GPS is selectable - Driver1 or
Driver2. (Driver2 is the default). The COM page of OziExplorer Configuration
has the option to change driver. If you are having trouble communication with your
GPS, try the other driver. (Most GPS's will work with either driver, in this case we
recommend using Driver2).
Cursor Jumps around the Screen when the GPS is Connected
When I plug my GPS into the adapter or reboot the PC with
the GPS plugged in the mouse cursor jumps around the screen.
See this page for advice
Mouse Jumping Support page
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