Globalsat Technology bu-303 (sirf iii), bu-353 (sirf iii) User Manual
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USB_GPS_WIN_ v2.1
USB GPS (WIN)
6. UN-INSTALL THE USB DRIVER
Run the file the
Remover98_2k.exe
to uninstall the USB GPS driver.
7. FAQ’s
I an not getting GPS data into my application.
1. Check your DEVICE MANAGER to confirm the COM Port number assigned to the GPS
Receiver (it will be listed under the PORTS (COM & LPT) heading as Prolific
Serial-to-USB
Comm.
Then be sure this is the same COM port number configured in your application.
2. Be sure your Baud rate is configured correctly at:
Baud Rate: 4800
Data bit: 8
Parity: None
Stop Bit: 1
Flow Control: None
Stop Bit: 1
Flow Control: None
3. Re-boot your computer and then insert the USB GPS into a USB port.
4. Configure the GPS Info utility with the correct COM Port and test your GPS receiver first
before using it in your application.
Will the USB GPS work with other Street Mapping software?
Globalsat USB GPS receivers provides standard NMEA data for mapping software to use and convert
to coordinates and should work well with most any NMEA compliant software on the market today.
Globalsat USB GPS receivers provides standard NMEA data for mapping software to use and convert
to coordinates and should work well with most any NMEA compliant software on the market today.
How accurate is the GPS?
The USB GPS is WAAS/EGNOS capable, and for units sold in North America through authorized
resellers, these units are WAAS/EGNOS enabled unless otherwise stated. Accuracy can be up to 5
meters 3D RMS with WAAS enabled and 10-15 meters 2D RMS WAAS disabled
The USB GPS is WAAS/EGNOS capable, and for units sold in North America through authorized
resellers, these units are WAAS/EGNOS enabled unless otherwise stated. Accuracy can be up to 5
meters 3D RMS with WAAS enabled and 10-15 meters 2D RMS WAAS disabled
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 BU-303. You may need to give the GPS a few
minutes to find or get a fix its location.
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 BU-303. 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?
Your USB GPS 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 Globalsat USB GPS has a
built-in LED status indicator that shows the following:
Your USB GPS 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 Globalsat USB GPS has a
built-in LED status indicator that shows the following:
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.
LED ON (solid): No fix, searching for GPS signals.
LED FLASHING: Position fix established and GPS signals are being received.