Global Sat BT-308 User manual

UserManual
Bluetooth GPS Receiver
BT-308
Ver 1.02

BT-308 at a glance

1. Introduction
The BT-308 is a GPS receiver with Bluetooth interface and built-in active antenna for
high sensitivity to tracking signal. Based on the SiRF star Ⅱe/LP low power chip set and
supports all functions(SingleSat updates in reduced visibility, Superior urban canyon
performance, FoliageLock for weak signal tracking, etc.). The BT-308 is well suited to
system integration and users who use PDA, Smart phone, Tablet PC and Notebook PC with
Bluetooth devices. It satisfies a wide variety of applications for car navigation, personal
navigation or touring devices, tracking and marine navigation purpose.
1.1 Package
Before you start up, make sure that your package includes the following
items. If any items are missing or damaged, contact your dealer immediately.
 Bluetooth GPS Receiver
 A CD with the User Manual and the Testing Program.
 AC Power Charger
 DC Car Power Charger
 External Antenna
1.2 Power Switch
Power on
Power off
1.3 Power Jack
The power jack lets you to connect either a DC car power charger (included) or AC
power charger (included) to recharge the internal battery. You can either use the included
two chargers or an iPAQ-compatible AC adapter. Please note that the adapter rating 5V,
1.2 A, positive pole center.

1.3 LED Function
Bluetooth Status LED (Blue):
Blinking (Slowly) ---- Not connected to any Bluetooth devices.
Blinking (Quickly) ---- Connected to other Bluetooth device.
GPS Status LED (Green):
Blinking ---- GPS position is fixed
Steady light ---- GPS position not fixed
Battery Status LED (Red/Yellow):
Red ---- Battery power is critically low. Charge immediately.
Yellow ---- Battery is charging now.
LED off ---- Battery partially full or Battery is fully charged.
1.4 External Antenna
Basically, you don’t need external antenna to perform GPS positioning with BT-308 since
it already build-in active antenna. The only condition that you need external antenna is when
BT-308 unit can not “see” the sky, For instance, when you are in any environments that GPS
signal is blocked, the external GPS antenna will help to receive better GPS signal.
Plug the external antenna with MMCX connector to the plug on BT-308. Place the
magnetic external antenna on the roof of the car or an outdoor open-space, and make sure
place it in correct direction. That is, the side with magnetic is the bottom side, and the upper
side must face to sky in order to receive better signal.
Notice:
Hold the antenna connector while you plug the external antenna into the BT-308 or
unplug the external antenna from the BT-308. Do not pull the cable line.
2. Usage
2.1. For PDAwhich built-in Bluetooth (Example: iPAQ 3870/3970)
1. Switch the BT-308 power on.
2. Please refer to the user manual of PDA to enable the Bluetooth of PDA
connecting to the BT-308. Some PDAs may need the Bluetooth passkey, the
passkey is “2003”.

3. Check the number of COM port used by Bluetooth.(Example the iPAQ 3970 is
the output port COM 8).
4. Running the suitable mapping/navigation software and select the correct COM
port(iPAQ 3970 is the output port COM 8)& baud rate : 38400
2.2. For PDAwith Bluetooth Compact Flash card
1. Switch the BT-308 power on.
2. Please refer to the user manual of Bluetooth Compact Flash card to enable it
connecting to the BT-308. Some Bluetooth devices may need the Bluetooth
passkey, the passkey is “2003”.
3. Check the number of COM port used by Bluetooth.(Example COM 6).
4. Running the suitable mapping/navigation software and select the correct COM
port & baud rate : 38400.
2.3. For Notebook with Bluetooth device
1. Switch the BT-308 power on.
2. Please refer to the user manual of Bluetooth device to enable it connecting to the
BT-308. Some Bluetooth devices may need the Bluetooth passkey, the passkey is
“2003”.
3. Check the number of COM port used by Bluetooth.(Example COM 6).
4. Running the suitable mapping/navigation software and select the correct COM
port & baud rate : 38400.
Note: Most of the applications, the Bluetooth device have an “auto-detect” feature
that you do not need to select Baud Rate.

3. How to test your Bluetooth GPS Receiver ?
The testing program only supports the Microsoft Windows CE & Pocket PC based PDA
platform.
1. Run the “GPSinfo.exe” to execute the installation procedure of testing program (via
PC and ActiveSync).
2. Run the “GPS Information” program from “Start →Program files” of PDA.
Here is the description of “GPS Information” testing program as follows:
User must select COM port , Baud Rate (38400) and click the [Star GPS] button to start
receiving GPS data.
Note: Most of the applications, the Bluetooth device have an “auto-detect” feature
that you do not need to select Baud Rate.

3. System Specification
Electrical Characteristics (Receiver)
Frequency L1, 1575.42 MHz
C/A Code 1.023 MHz chip rate
Channels 12
Sensitivity -170 dBW
Accuracy
Position Horizontal 15m 2D RMS (SA off)
WAAS enabled 10m 2D RMS (SA off)
Time 1 micro-second synchronized to GPS time
Velocity 0.1m/sec 95% (SA off)
Datum
Datum WGS-84
Acquisition Rate
Hot start 8 sec., average (with ephemeris and almanac valid)
Warm start 38 sec., average (with almanac but not ephemeris)
Cold start 45 sec., average (neither almanac nor ephemeris)
Reacquisition 0.1 sec. average (interruption recovery time)
Protocol
GPS Output Data NMEA 0183 protocol, and supports command:
GGA, GSA, GSV, RMC, VTG, GLL (VTG and GLL
are optional)
GPS transfer rate 38400,N,8,1
Dynamic Condition
Acceleration Limit Less than 4g
Altitude Limit 18,000 meters (60,000 feet) max.
Velocity Limit 515 meters/sec. (1,000 knots) max.
Jerk Limit 20 m/sec**3
External antenna
Power 3.3V
Connector MMCX
Power
Voltage Built-in rechargeable battery(900 mAh) and 5V DC
input charging circuit
Operation Time 8 hr. After fully recharged, in continuous mode
>10 hr in trickle power mode
Physical Characteristics
Dimension 85mm x 47mm x 26mm
Weight 98g
Temperature
Operating -20°~ 70°C
Storage -30°~ 80°C
Humidity Up to 95% non-condensing
3.1 Bluetooth Specification
●Bluetooth V1.1 Compliant
●Supply Voltage : 2.8V ~ 3.3V
●Frequency Range : 2.402 ~ 2.480 GHz
●Receiver Sensitivity : -80 dBm
●Transmit Power : Class 2
●Transmitting Range : 3 ~10 m (Depends on environment)
●Power Consumption : 45 mA (Typical)

FCC Notices
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.