Globalsat Technology Globalsat BU-303 (SiRF II) - Manual (Page 13)

PAGE 12 OF 13
USB_GPS_WIN_ v2.1
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°~ 176°F (-40°~ 80°C)
Storage -40°~ 176°F (-40°~ 80°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.
FCC NOTICE
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause
undesired operation. FCC RF Exposure requirements: This device and its antenna(s) must not be co-located or operation in conjunction with any other
antenna or transmitter. NOTE: THE MANUFACTURER IS NOT RESPONSIBLE FOR ANY RADIO OR TV INTERFERENCE CAUSED BY
UNAUTHORIZED MODIFICATIONS TO THIS EQUIPMENT. SUCH MODIFICATIONS COULD VOID THE USER'S AUTHORITY TO OPERATE
THE EQUIPMENT.