dikom DBT-268 User Manual
USER’S GUIDE
Mini Bluetooth DBT-268
Sintrade AG
Kriesbachstrasse 30
CH-8600 Dübendorf
www.sintrade.ch
gps@sintrade.ch
DBT-268 Bluetooth GPS Receiver User’s Guide
Contents
1. Introduction ………………………………………………..…………. 2
1.1 Overview …………………………………………………………… …2
1.2 Features ……………………………………………………………..… 2
1.3 Electrical Characteristics
……………………………………………. 3
2. Hardware ……………………………………………………………… 4
2.1 Dimension ……………………………………………………………. 4
2.2 Packin
g List …………………………………………………..……… 4
2.3 Description ……………………………………………………...…..… 4
3. Operation ……………………………………………………………… 7
3.1 Getting Start …………………………………………………………. 7
3.2 GPS Viewer for Testing ………..…………………………………… 8
3.3 Function …………………………………………………………… 10
3.4 Navigation ………………………………………………………….. 11
4. Warranty ………………………………………………….………… 11
5. Troubleshooting ………………………………………………….……12
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DBT-268 Bluetooth GPS Receiver User’s Guide
1. Introduction
1.1 Overview
The DBT-268 Bluetooth GPS receiver incorporates a wireless Bluetooth radio module, a high
performance SiRF StarIII GPS chipset, and a rechargeable battery in a compact design. The
SiRF StarIII chipset is with extremely high sensitivity for GPS signal acquisition and tracking.
This Bluetooth GPS receiver allows you to receive GPS data on mobile hand-held devices.
By sending the GPS data wirelessly, you may place this receiver on a position with best
signal reception without the constraint of annoying wires. The receiver is equipped with
portable, rechargeable, with removable battery, just like a mobile phone. The only
requirement is your corresponding hand-held device is also with the Bluetooth connection
capability. The receiver is positioning for broad applications such as vehicle navigation,
mapping, surveying, security, agriculture…, etc. Only a clear view of sky and a battery
power are necessary to the unit. With its low power consumption, the receiver tracks up to
20 satellites at a time while offering fast time-to-first-fix (TTFF), reacquires satellite signals
in 100 milliseconds (averaged) and updates position data every second.
1.2 Features
The DBT-268 provides a host of features that make it easy for system integration and
convenient for users using PDA, Notebook PC with Bluetooth device.
1. With SiRF StarIII high sensitivity and low power consumption chipset.
2. 20 parallel satellite-tracking channels for fast acquisition and reacquisition
3. High speed signal acquisition using 200,000 time/frequency search channels.
4. Built-in WAAS/EGNOS demodulator without additional hardware.
5. With the highly sensitive software to get the fast acquisition and reacquisition in the
urban, canyon and foliage environments.
6. Equipped with 1200 mAh Li-ion rechargeable battery for long operating hours.
7. Over temperature protection for the battery.
8. Compatible with Bluetooth devices with Serial Port Profile (SPP).
9. With an internal built-in antenna, and also provides a connector for accessing external
active antenna.
10. Three LEDs show Bluetooth, GPS, and battery status.
11. Supports standard NMEA-0183 data protocol and SiRF binary code at 38400 baud rate.
12. Built-in rechargeable battery for memory and RTC backup and for fast TTFF.
13. Flash-based program memory, new software revisions upgradeable through serial
interface.
14. Compact, sleek, and lightweight enclosure design.
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DBT-268 Bluetooth GPS Receiver User’s Guide
1.3 Electrical Characteristics
General
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 20 channels all-in-view tracking
Antenna internal
Sensitivity
Tracking -159 dBm typical
Accuracy
Position Normal: 5~25 meters CEP without SA
Enable EGNOS or WAAS:
Position < 2.2 meters, horizontal 95% of time
< 5 meters, vertical 95% of time
Velocity 0.1 meters/second
Time 1 microsecond synchronized to GPS time
Datum
Default WGS-84
Limitation
Altitude < 18,000 meters (60,000 feet)
Velocity < 515 meters/sec (1000 knots)
Acceleration < 4 G
Jerk 20 meters/sec max.
Acquisition Rate
Hot start < 1 sec, averaged (with ephemeris and almanac valid)
Warm start < 38 sec, averaged (with ephemeris but not almanac)
Cold start < 42 sec, averaged (neither ephemeris nor almanac)
Re-acquisition 0.1 sec. (interruption recovery time)
GPS protocol
Protocol message NMEA-0183
Default NMEA GGA, GSA, GSV, RMC, 38400 baud rate, (VTG, GLL, and
RMS optional)
8 bits data, 1 stop bit, no parity.
Bluetooth Characteristics
BT Compliant Version1.1
RF Tx Power Class 2 (4 dBm max)
Receiver sensitivity -80 dBm with BER<0.1%
Communication distance 10 meter typically
Communication profile Serial Port Profile (SPP)
Power Consumption
Main power input 5V DC input.
Main power input 3.3 ±5% VDC from internal Lithium-ion battery pack
Operation Current 75~85 mA total typical in normal mode
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