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TN200P WUG v2.0
TN-200
6. FAQ’s
Will the TripNav work with other Street Mapping software?
TripNav USB GPS provides standard NMEA data for mapping software to use and convert to
coordinates and should work well with any NMEA compliant software on the market today.
How accurate is the GPS?
The TN-200 has WAAS enabled and can achieve accuracy of up to 5 meters 2-D under the proper
conditions.
What is ideal GPS environment?
The GPS requires an open, clear view of the sky. Buildings, covered parking areas, tunnels and dense
foliage can cause the GPS receiver to be unable to get a location fix.
If you are parked in a covered parking lot or near a tall building, it is recommended that you drive away
until you have a clear view of the sky before using the TripNav. You may need to give the GPS a few
minutes to find or get a fix its location.
How do I know if the GPS is ON?
The TripNav must be plugged into your laptop’s USB port to get power. If your PC is on and the COM
port was configured properly, the GPS receiver is on and receiving the streaming GPS data. This can
be verified by opening your mapping software program. In addition, the TN-200 has a built-in LED
indicator that works as follows:
LED OFF: GPS receiver is off (no power)
LED ON (solid): No fix, searching for GPS signals.
LED FLASHING: Position fix established and GPS signals are being received
NOTE: The LED sequence is REVERSED from all previous versions of the TN-200, which utilized the
FTDI USB chipset, as opposed to the Prolific chipset now being used. You may also see references of
the part number “TN-200P” on our web-site which is often made to help differentiate the prior version
TN-200 with the newer “Prolific” version of the receiver. (see: http://www.rayming.com/downloads.asp
section TripNav, TN200P for more details).
Why does the GPS not work near buildings and other tall objects?
The GPS uses satellites in the space to find out where it is. Therefore it needs a clear view of the sky.
Tall buildings and other objects that block the receiver’s view to the sky make it infeasible to determine
your location.
Sometimes the satellites are not overhead but near the horizon. In these cases the GPS must have a
clear view of the horizon.
Why do I get an error message saying “Unable to open GPS Communication with port (COMx)?
Please check your port configuration.”
If you have followed the above installation steps but the GPS device still does not work, try unplugging
the GPS device from the USB port, close the mapping software and wait for at least 10 seconds, before
re-connecting the GPS device.
(33 pages)
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