GlobalSat BT-821C User Manual

Bluetooth GPS Receiver

BT-821C

User Manual

Ver 1.1

Table of Content

1. Product Information .......................................................................................... 3

1.1 Product Description ........................................................................................ 3

1.2 Product Features ............................................................................................ 3

1.3 Product Specifications .................................................................................... 4

2. Hardware Description ....................................................................................... 5

2.1 Top View and Bottom View ............................................................................ 5

2.2 LED Behaviors ............................................................................................... 6

2.3 Power Button .................................................................................................. 6

2.4 Power-saving function .................................................................................... 6

3. Package Contents ............................................................................................ 7

4. Getting Started …………................................................................................... 8

Step 1: Charging Battery ………........................................................................... 8

Step 2: Turn on the power ………......................................................................... 9

Step 3: Wait for GPS fixed ………......................................................................... 9

Step 4: Connect to your Bluetooth-enabled devices ……...................................... 9

Step 5: Start Navigation Software ……….............................................................. 9

5. Troubleshooting ……….................................................................................... 10

Bluetooth is unable to connect ............................................................................ 13

GPS cannot be positioned .................................................................................. 13

__________________________________________________________________________________________

Page 1 of 11

1. Product Information

1.1 Product Description

BT-821C is a high performance Bluetooth GPS receiver. It uses MTK high
performance chipset that supports up to 210 PRN channels with 66 search channels
and 22 simultaneous tracking channels. BT-821C build-in a high-performance
antenna and ensures excellent signal reception.
BT-821C takes advantage of the Bluetooth technology to offer hassle free
installation. It connects wirelessly to your Bluetooth enabled smart phone, laptop,
tablet PC, or other devices.
BT-821C uses a high capacity rechargeable lithium ion battery which can last for
up to 24 hours of continuous operation. BT-821C is the best companion of your

tablet PC, smart phone, or other portable devices for navigation purposes.

1.2 Product Features

ˇ MTK high performance chipset
ˇ Extreme fast TTFF at low signal level
ˇ Bluetooth enabled
ˇ High capacity rechargeable battery
ˇ NMEA-0183 compliant protocol (GGA, GSA, GSV, RMC) RTCM
ˇ SBAS (WAAS, EGNOS, GAGAN, and MSAS), QZSS supported
ˇ Satellite positioning indication(Green LED)

ˇ Battery status indication(Red/Amber LED)
ˇ Bluetooth connecting indication(Blue LED)

__________________________________________________________________________________________

Page 2 of 11

1.3 Product Specifications

GPS chipset

Frequency L1, 1575.42 MHz
Chipset MTK high performance chipset
Code C/A Code
Protocol NMEA 0183

(Default: GGA, GSA, GSV, RMC) RTCM
Available Baud Rate 38400
Channels 66 search channels and 22 simultaneous tracking

channels
Antenna Built-in Antenna
Sensitivity Acquisition:-148dBm(cold)/-163dBm(hot)

Tracking:-165dBm
Cold Start < 35 seconds
Warm Start < 35 seconds
Hot Start < 1 second
Reacquisition 0.1 second, average
Accuracy Position:3m (2D RMS) / 2.0m with DGPS

Velocity: < 0.1m/s
Maximum Altitude ＜ 18,000 meter

Maximum Velocity ＜ 515 meter/second
Maximum Acceleration ＜ 4G
Update Rate 1 Hz

DGPS WAAS, EGNOS, MSAS, GAGAN

Bluetooth

Version 2.0
Range 10 Meter (Class 2)
Support Profile SPP Profile

Physical Characteristics

Dimensions 43mm X 24.5mm X 73.6mm
Weight 80 g (battery included)

DC Characteristics

Power Supply 5.0Vdc
Battery Rechargeable Li-ion, 1100mAH
Battery Life Up to 24 Hours

Environmental Range

Humidity Range 5% to 95% non-condensing
Operation
Temperature
Storage Temperature -20°C to 70°C

__________________________________________________________________________________________

Page 3 of 11

-10°C to 60°C

0°C to 45°C while charging