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BU303-353_WIN_UsersGuide_ v2.3
USB GPS (WIN)
11. BU-303 SPECIFICATIONS
Electrical Characteristics (Receiver)
GPS Chipset SiRF Star II e/LP
Frequency L1, 1575.42 MHZ
C/A Code 1.023 MHz chip rate
Channels 12 all-in-view tracking
Sensitivity -147 dBm
Accuracy
Position Horizontal
10m 2D RMS WAAS enabled
15m 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 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 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 : 4800,n,8,1 for NMEA )
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 -40°~ 80°C
Storage -40°~ 85°C
Humidity Up to 95% non-condensing
Power
Voltage 5V ±5%
Current 90mA typical
Physical Characteristics
Dimension 2.32" x 1.65" x 0.82" (59mm x 47mm x 21mm)
USB Cable Length 60" (152 cm)
Low Noise Amp
Amplifier Gain w/out cable
27 dB Typical
Filtering
-25dB (+100 MHz)
Output VSWR
2.0 Max.
Voltage
DC 3 ~ 5.0V
Current
15mA max @ 5VDC
Due to continuous product improvements, all specifications are subject to change without notice.