Globalsat Technology GPS Receiver BU 303 SiRF II BU 353 SiRF III User Manual

USB GPS User’s Guide (WIN)  
USB GPS Receiver  
BU-303 (SiRF II)  
BU-353 (SiRF III)  
(Information on installation of the USB driver contained in this  
document is also applicable to our USB cable set #BR305-USB)  
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USB GPS (WIN)  
Table of Contents  
PACKAGE CONTENTS ....................................................................................................3  
SYSTEM REQUIREMENTS .............................................................................................3  
WELCOME.........................................................................................................................3  
1. GETTING STARTED....................................................................................................4  
2. INSTALLING THE USB DRIVER TO YOUR LAPTOP...............................................4  
3. COM PORT VERIFICATION........................................................................................5  
4. INITIALIZING YOUR GPS RECEIVER........................................................................6  
5. USING / TESTING YOUR GPS RECEIVER...............................................................6  
6. UN-INSTALL THE USB DRIVER.................................................................................8  
7. FAQ’s.............................................................................................................................8  
8. CONTACT INFORMATION..........................................................................................9  
9. SAFETY AND LEGAL NOTICES.................................................................................9  
10. LIMITED WARRANTY..............................................................................................11  
11. BU-303 SPECIFICATIONS......................................................................................12  
12. BU-353 SPECIFICATIONS......................................................................................13  
PAGE 2 OF 13  
USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
PACKAGE CONTENTS  
- USB GPS Receiver  
- Driver CD-ROM with User’s Guide and test utility for WIN and Mac O/S*  
WIN Users please refer to the root directory on the included CD-ROM for installation instructions  
and drivers.  
SYSTEM REQUIREMENTS  
The Globalsat USB GPS receivers requires a Windows, or Macintosh laptop computer, with a CD-  
ROM*, USB port, and NMEA compatible navigation software. The 3rd party mapping/navigation  
software may have its own system requirements, please check with software vendor for details.  
*CD-ROM is required for USB driver installation and access to the User’s Guide. If no CD-ROM drive is available,  
files can be downloaded from the Internet at : http://www.usglobalsat.com/  
WELCOME  
Thank you for purchasing a Globalsat USB GPS receiver! Globalsat USB GPS receivers allow for real-time street  
navigation by using your laptop for graphical plotting and positioning of your route. Simply load the GPS driver, plug  
the GPS receiver into your computer’s USB port and install your own personal mapping software to begin to view  
your position in real-time in relation to the surrounding streets in your travel area.  
You’ll find that almost any NMEA compliant mapping/charting software will be compatible with your USB GPS  
receiver. Visit our web-site for recommended mapping programs that you can use.  
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USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
1. GETTING STARTED  
These are only a few simple steps that you need to follow before using your USB GPS receiver:  
Install the USB driver and onto your laptop from the included CD-ROM or download the files from our web-site  
Plug-in the GPS receiver into your laptop.  
NOTE: From within your mapping, or navigation software (including the supplied GPS Information utility), you will  
need to manually configure the selection of the COM port to what was assigned to the GPS receiver so that proper  
communication between the GPS receiver and mapping program can occur. Most all software requires that you  
manually configure the COM port setting for any GPS device you use.  
IMPORTANT:  
1. You must change the default rate setting of your mapping software ‘s Baud Rate to 4800 if this is not currently  
set as such otherwise GPS data cannot be received.  
2. Set Baud Rate 4800, Data Bit: 8, Parity: None, Stop Bit: 1, Flow Control: None  
2. INSTALLING THE USB DRIVER TO YOUR LAPTOP  
1. Place the product CD-ROM into your CD-ROM drive.  
2. Auto-run should detect the CD bring up the following screen below.  
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USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
3. Click on the button titled “Install Driver” from the main screen as shown above.  
4. Or should your “Auto-Run” be disabled on your PC, use Windows Explorer or File Manager to  
locate the file titled ”PL-2303 Driver Installer.exe” in the root directory of the CD-ROM and click to  
launch the install process.  
3. COM PORT VERIFICATION  
1. Once your USB Driver has been installed, you will need to confirm which COM Port your PC  
has assigned to it in order to properly configure any software that will be utilizing the GPS data  
being received.  
2. Your USB GPS MUST be plugged into your USB port at this time.  
3. Using Window’s Control Panel, select System > Hardware > Device Manager  
4. Then look under the heading of: PORTS (Com & LPT)  
5. There should be a listing for: Prolific Serial-to-USB Comm Port (COM x)  
(“x” will actually be the number your PC has assigned the USB GPS receiver).  
6. Once you have identified the COM port number, any software that you utilize must be  
configured to read GPS data from this COM port.  
We strongly suggest that you first test your USB GPS with the included GPS Info utility program to  
confirm that the GPS receiver if functioning properly on your PC and that you have successfully  
configured the right COM Port setting. Once this has been done, close the GPS Info program and  
start your application for COM port configuration.  
NOTE: By default, your PC will not allow you to run multiple applications from a single COM port. It  
is important that you close any previously opened GPS application before switching to another  
GPS application as the GPS receiver and data will not be found by the new program.  
There are special utilities available to split data into multiple COM ports for use by more than one  
application simultaneously. (see: http://franson.com/gpsgate/ )  
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USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
4. INITIALIZING YOUR GPS RECEIVER  
Before using your USB GPS receiver for navigation (especially for the first time), the receiver must  
obtain a local GPS fix (coordinates) of the current position. To do this, take your laptop (with your USB  
driver and the mapping software loaded and configured) to an open area that has a clear view to the  
sky (such as a park or empty field). Start your software (or the included GPS Info utility program) and  
wait for initialization of the GPS to complete. This may take a few minutes depending on various  
factors such as the distance of the current coordinates from the last time the GPS receiver was  
activated, GPS signal strength and surrounding terrain (tall trees and buildings can block the satellite  
signals). Once the RAW GPS data is displayed onto the screen, if applicable for your software, a fix  
has been initialized (red LED on the GPS will also start to flash). In some cases initialization can take  
up to several minutes depending on the conditions mentioned above before complete GPS data will be  
displayed on the screen.  
Coordinates scrolling with zero’s means that the port connection is complete, but the satellite data is not  
being received yet (possibly still initializing or in a bad area for satellite reception).  
5. USING / TESTING YOUR GPS RECEIVER  
Once the USB GPS receiver’s driver and your personal mapping software have been installed and  
configured properly, you can begin to use your navigation system by plugging the USB GPS into your  
laptop’s USB port and launching your mapping software. If you don’t have a mapping, or navigation  
software, we’ve included a GPS test utility called “GPS Info” for the purpose of confirming your  
installation and configuration. This utility can be installed by clicking the GPSInfo.exe file from the Win  
directory on the CD-ROM or downloaded from our web-site www.usglobalsat.com.  
LED Status indicator on the USB GPS”  
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.  
Always select an area in the vehicle where the GPS unit will be secure and not obstruct normal driving,  
visibility and safety, but still maintaining a “view to the sky” in order to receive satellite data.  
It is recommended that you first load and test your GPS receiver with the GPSinfo.exe. This process  
will confirm you have found correct COM port number and have configured it properly.  
1. Run GPSinfo.exe to load the utility.  
2. Enter the proper COM port for your GPS device (see COM Port Verification above)  
3. Set COM port to Baud rate: 4800  
4. If no errors have been made in configuration, there should be GPS data being displayed in the  
window, which is confirmation that the communication between the GPS device and the “GPSinfo”  
software is working properly.  
5. If there is no GPS data displayed (or data with multiple zeros in them), please exit the software and  
unplug the GPS receiver from the USB port and reinsert it after 10 seconds to reset the device.  
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USB_GPS_WIN_ v2.1  
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The above screen shows the available satellites (numbers) and their signal strength.  
NOTE: Configuration (or selection) of an assigned COM port for the GPS device from within your  
mapping or charting software must be completed whenever using a software for the first time.  
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USB_GPS_WIN_ v2.1  
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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  
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.  
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  
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.  
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:  
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.  
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USB_GPS_WIN_ v2.1  
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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.  
Other Comments-  
Please allow an adequate amount of time for the GPS receiver’s boot-up (TTF) to complete before  
contacting Technical Support.  
Driver updates can be found at Prolific ’s web-site:  
8. CONTACT INFORMATION  
Globalsat Technology Corporation (Taiwan)  
[email protected] (pre-sales GPS product questions only)  
USGlobalsat, Inc.  
[email protected] (pre-sales GPS product questions only)  
Technical Support (North America)  
See our DOWNLOADS and FAQ section on our web-site for GPS solutions, driver literature updates.  
Pre-registration is required before receiving any type of technical support. Support issues submitted via  
phone, fax or e-mail (any means outside of the recognized “Trouble Ticket” generated from your own  
USGlobalsat registered account) WILL NOT be answered.  
Create your account and register your products at: www.usglobalsat.com/support/custadminlogin.asp  
9. SAFETY AND LEGAL NOTICES  
Please read this section carefully before using the GPS receiver  
Globalsat Technology Corporation / USGlobalsat, Inc. will not accept any responsibility  
whatsoever for accidents resulting from failure to observe common sense precautions. Your  
personal judgment, traffic regulations, and common sense must always take precedence over  
any directions produced by GPS receiver or the mapping software  
WARNING: Make sure that the GPS receiver is secure and does not interfere with driving  
visibility and safety.  
It is your responsibility as the vehicle operator to securely place the GPS unit and antenna so that they  
will not interfere with driving and prevent operations of any safety device (such as the Airbag) in your  
vehicle. Do not mount the devices in a place where the driver or passengers may receive injury during  
vehicle operation or collision. For your safety, take care to route all cables away from shifters, pedals,  
accessory controls and mechanisms.  
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USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
WARNING: Drive safely and use common sense.  
It is your responsibility as the vehicle operator to drive safely, observe all traffic rules and above all use  
your own personal judgment while driving. If you feel that a route suggested by the navigation software  
instructs you to perform an unsafe or illegal maneuver, places you in an unsafe situation, or routes you  
into an area which you consider unsafe, do not follow the instructions.  
WARNING: Keep your eyes on the road.  
It is your responsibility as the vehicle operator to keep your eyes on the road and be an alert driver at all  
times, especially when the vehicle is moving. The vehicle’s operator should not be distracted by the  
navigation equipment or software. Should there be a distraction with the ability to drive responsibly,  
please turn off the device. Should you want to look at the display for a prolonged time, park the car  
safely, while following all traffic regulations before looking at the display.  
WARNING: To reduce the risk of fire or shock hazard, do not expose this product to rain or  
moisture. Do not remove covers or open housings, there are no user serviceable parts inside.  
Refer servicing to qualified personnel only.  
PAGE 10 OF 13  
USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
10. LIMITED WARRANTY  
THIS PRODUCT HAS BEEN DISCONTINUED  
AND CARRIES NO FACTORY WARRANTY  
PAGE 11 OF 13  
USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
11. BU-303 SPECIFICATIONS  
Electrical Characteristics (Receiver)  
GPS Chipset  
Frequency  
C/A Code  
Channels  
Sensitivity  
Accuracy  
SiRF Star II e/LP  
L1, 1575.42 MHZ  
1.023 MHz chip rate  
12 all-in-view tracking  
-147 dBm  
10m 2D RMS WAAS enabled  
15m 2D RMS WAAS disabled  
0.1m/sec 95% (SA off),  
Position Horizontal  
Velocity  
Time  
1 micro-second synchronized to GPS time  
WAAS  
Enabled for North America product s (USGlobalSat, Inc)  
Datum  
Datum  
WGS-84  
Acquisition Rate  
Hot start  
8 sec., average (with ephemeris and almanac valid)  
38 sec., average (with almanac but not ephemeris)  
45 sec., average (neither almanac nor ephemeris)  
0.1 sec. average (interruption recovery time)  
Warm start  
Cold start  
Reacquisition  
Protocol  
GPS Protocol  
Default: NMEA 0183 (Secondary: SiRF binary)  
SiRF binary >> position, velocity, altitude, status and control  
NMEA 0183 MEA0183 V2.2 protocol, and supports  
command: GGA, GSA, GSV, RMC, VTG, GLL v2.2 (VTG  
and GLL are optional)  
GPS Output Data  
GPS transfer rate  
Dynamic Condition  
Acceleration Limit  
Altitude Limit  
Velocity Limit  
Jerk Limit  
Software command setting (Default : 4800,n,8,1 for NMEA )  
Less than 4g  
18,000 meters (60,000 feet) max.  
515 meters/sec. (1,000 knots) max.  
20 m/sec**3  
Temperature  
Operating  
Storage  
-40°~ 176°F (-40°~ 80°C)  
-40°~ 176°F (-40°~ 80°C)  
Up to 95% non-condensing  
Humidity  
Power  
Voltage  
5V ±5%  
Current  
90mA typical  
Physical Characteristics  
Dimension  
USB Cable Length  
Low Noise Amp  
Amplifier Gain w/out cable  
Filtering  
2.32" x 1.65" x 0.82" (59mm x 47mm x 21mm)  
60" (152 cm)  
27 dB Typical  
-25dB (+100 MHz)  
2.0 Max.  
Output VSWR  
Voltage  
DC 3 ~ 5.0V  
Current  
15mA max @ 5VDC  
Due to continuous product improvements, all specifications are subject to change without notice.  
FCC NOTICE  
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause  
undesired operation. FCC RF Exposure requirements: This device and its antenna(s) must not be co-located or operation in conjunction with any other  
antenna or transmitter. NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY  
UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER'S AUTHORITY TO OPERATE  
THE EQUIPMENT.  
PAGE 12 OF 13  
USB_GPS_WIN_ v2.1  
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USB GPS (WIN)  
12. BU-353 SPECIFICATIONS  
Electrical Characteristics (Receiver)  
GPS Chipset  
Frequency  
C/A Code  
Channels  
Sensitivity  
Accuracy  
SiRF Star III e/LP  
L1, 1575.42 MHZ  
1.023 MHz chip rate  
20 all-in-view tracking  
-159 dBm  
5m 2D RMS WAAS enabled  
10m 2D RMS WAAS disabled  
0.1m/sec 95% (SA off),  
Position Horizontal  
Velocity  
Time  
1 micro-second synchronized to GPS time  
WAAS/EGNOS  
Datum  
Enabled for North America product s (USGlobalSat, Inc)  
Datum  
WGS-84  
Acquisition Rate  
Hot start  
Warm start  
Cold start  
Reacquisition  
Protocol  
1 sec., average (with ephemeris and almanac valid)  
38 sec., average (with almanac but not ephemeris)  
42 sec., average (neither almanac nor ephemeris)  
0.1 sec. average (interruption recovery time)  
GPS Protocol  
Default: NMEA 0183 (Secondary: SiRF binary)  
SiRF binary >> position, velocity, altitude, status and control  
NMEA 0183 MEA0183 V2.2 protocol, and supports  
command: GGA, GSA, GSV, RMC, VTG, GLL v2.2 (VTG  
and GLL are optional)  
GPS Output Data  
GPS transfer rate  
Dynamic Condition  
Acceleration Limit  
Altitude Limit  
Velocity Limit  
Jerk Limit  
Software command setting (Default : 4800,n,8,1 for NMEA )  
Less than 4g  
18,000 meters (60,000 feet) max.  
515 meters/sec. (1,000 knots) max.  
20 m/sec**3  
Temperature  
Operating  
Storage  
-40°~ 185°F (-40°~ 85°C)  
-40°~ 185°F (-40°~ 85°C)  
Up to 95% non-condensing  
Humidity  
Power  
Voltage  
Current  
4.5 ~ 5.5V DC Input  
80mA typical  
Physical Characteristics  
Dimension  
USB Cable Length  
Low Noise Amp  
Amplifier Gain w/out cable  
Filtering  
2.08" diameter x 0.75" (53mm dia. x 19.2mm)  
60" (152 cm)  
27 dB Typical  
-25dB (+100 MHz)  
2.0 Max.  
Output VSWR  
Voltage  
DC 3 ~ 5.0V  
Current  
15mA max @ 5VDC  
Due to continuous product improvements, all specifications are subject to change without notice.  
FCC NOTICE  
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause  
undesired operation. FCC RF Exposure requirements: This device and its antenna(s) must not be co-located or operation in conjunction with any other  
antenna or transmitter. NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY  
UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER'S AUTHORITY TO OPERATE  
THE EQUIPMENT.  
PAGE 13 OF 13  
USB_GPS_WIN_ v2.1  
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