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DBT-268 Bluetooth GPS Receiver User’s Guide
1.3 Electrical Characteristics
General
Frequency
C/A code
Channels
Antenna
L1, 1575.42 MHz
1.023 MHz chip rate
20 channels all-in-view tracking
internal
Sensitivity
Tracking
-159 dBm typical
Accuracy
Position
Velocity
Time
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
0.1 meters/second
1 microsecond synchronized to GPS time
Datum
Default
WGS-84
Limitation
Altitude
Velocity
Acceleration
Jerk
< 18,000 meters (60,000 feet)
< 515 meters/sec (1000 knots)
<4G
20 meters/sec max.
Acquisition Rate
Hot start
Warm start
Cold start
Re-acquisition
< 1 sec, averaged (with ephemeris and almanac valid)
< 38 sec, averaged (with ephemeris but not almanac)
< 42 sec, averaged (neither ephemeris nor almanac)
0.1 sec. (interruption recovery time)
GPS protocol
Protocol message
Default NMEA
NMEA-0183
GGA, GSA, GSV, RMC, 38400 baud rate, (VTG, GLL, and
RMS optional)
8 bits data, 1 stop bit, no parity.
Bluetooth Characteristics
BT Compliant
RF Tx Power
Receiver sensitivity
Communication distance
Communication profile
Power Consumption
Main power input
Main power input
Operation Current
Version1.1
Class 2 (4 dBm max)
-80 dBm with BER<0.1%
10 meter typically
Serial Port Profile (SPP)
5V DC input.
3.3 ±5% VDC from internal Lithium-ion battery pack
75~85 mA total typical in normal mode
DBT-268 User’s Guide v1.0
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