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BU-303 USB GPS Receiver Specifications

Electrical Characteristics (Receiver)
GPS Chipset: SiRF Star II
Frequency: L1, 1575.42 MHz
C/A Code: 1.023 MHz Chip rate
Channels: 12
Sensitivity: -170dBW

Accuracy
Position Horizontal: 15m 2D RMS (SA off)
Velocity: 0.1m/ sec 95% (SA off)
Time: 1 micro-second synchronized to GPS time
WAAS (if enabled by user): 5m 2D RMS

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. (interruption recovery time)

Protocol:
GPS Protocol:
Default: NMEA 0183 (Secondary: SiRF binary)
GPS Output Data: SiRF binary >> Position, velocity, altitude, status and control, NMEA0183 V2.2 protocol and supports command: GGS, GSA, GSV, RMC.
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. (1000 knots) max.
Jerk Limit: 20m/sec

Temperature:
Operating: -30 - 80 C (-22 F - 176 F)
Storage: -40 -85 C (-40 F - 185 F)
Humidity: Up to 95% non-condensing

Power:
Voltage: 5V 5%
Current: 90mA typical

Physical Characteristics:
Dimensions: 2.32" x 1.85" x 0.82" (59mm x 47 x 21mm)
USB Cable Length: 65"

Low Noise Amp:
Amplifier Gain w/out cable: 27dB Typical
Filtering: -25dB (+100 MHz)
Output VSWR: 2.0 Max.
Voltage: DC 3- 5.0V
Current: 15mA @5VDC


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