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BT-328 User Manual page 3 of 10
2. System Specification
Model Name BT-328
Electrical Characteristics (Receiver)
Chipset SiRF GSC2
Frequency L1, 1575.42 MHz
C/A Code 1.023 MHz chip rate
Channels 12
Tracking Sensitivity -155 dBm
Accuracy
Position Horizontal 10m 2D RMS
WAAS enabled 5m 2D RMS
Time 1 micro-second synchronized to GPS time
Velocity 0.1m/sec 95%
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 42 sec. average (neither almanac nor ephemeris)
Reacquisition 0.1 sec. average (interruption recovery time)
Protocol
GPS Output Data NMEA 0183 protocol, and supports command:
GGA, GSA, GSV, RMC, VTG, GLL.
(VTG and GLL are optional)
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
Power
Voltage Built-in rechargeable battery (1300 mAh) and 5V DC input charging circuit
Operation Time 16 hr. After fully recharged, in continuous mode
Physical Characteristics
Dimension
67.5mm X 45mm X 17mm
Weight 65g
Temperature
Operating
-20ºC ~ 60ºC
Humidity Up to 95% non-condensing