Globalsat Technology bu-303 User Manual
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
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)
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.