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BT338_GPS_v2.0
BT-338 GPS
11. BT-338 SPECIFICATIONS
Electrical Characteristics (Receiver)
GPS Chipset SiRF Star III e/LP
Frequency L1, 1575.42 MHZ
C/A Code 1.023 MHz chip rate
Channels 20 all-in-view tracking
Sensitivity -159 dBm
Accuracy
Position Horizontal
5m 2D RMS WAAS enabled
10m 2D RMS WAAS disabled
Velocity 0.1m/sec 95% (SA off),
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 1 sec., average (with ephemeris and almanac valid)
Warm start 38 sec., average (with almanac but not ephemeris)
Cold start 42 sec., average (neither almanac nor ephemeris)
Reacquisition 0.1 sec. average (interruption recovery time)
Protocol
GPS Protocol Default: NMEA 0183 (Secondary: SiRF binary)
GPS Output Data
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 transfer rate Software command setting (Default : 38400,n,8,1 for NMEA )
Connection
Communication with host platform via Bluetooth Serial Port
Profile
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
Temperature
Operating -4°~ 140°F (-20°~ 60°C)
Storage -22°~ 176°F (-30°~ 80°C)
Humidity Up to 95% non-condensing
Power
Voltage 5V ±5%
Current
In Standby: 110 mA ~ 120 mA
In Operation: 130 mA ~ 140 mA
Battery Life 15 hours continuous use
Physical Characteristics
Dimension 2.85" x 1.595" x 0.90" (72.5mm x 40.4mm x 23mm)
Due to continuous product improvements, all specifications are subject to change without notice.