Detailed Product Description

GPS Module

Feature Item Description
Chipset GSC3f SiRFstarIII low power single chipset
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
General
Channels 20
Position 10 meters, 2D RMS
< 5 meters 2D RMS, WAAS corrected
Velocity 0.1 meters/second
Accuracy
Time 1 microsecond synchronized to GPS time
Datum Default WGS-84
Other selectable for other Datum
Reacquisition 0.1 sec., average
Snap start 1 sec., average
Hot start 1 sec., average typical TTFF
Warm start 38 sec., average typical TTFF
Time to First Fix
(TTFF)
(Open Sky &
Stationary
Requirements) Cold start 42 sec., average typical TTFF
Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Acceleration 4g, max.
Dynamic
Conditions
Jerk 20 meters/second3, max.
Main power input 3.3 ~ 5.0 VDC input
Power consumption ≈165 mW (continuous mode)
Supply Current ≈49 mA
Power
Backup Power 1.65 ~ 5.0 VDC input.
Serial Port Electrical interface Two full duplex serial TTL interface.
Protocol messages NMEA-0183@4800 bps (Default)
Level TTL
Pulse duration The 1PPS pulse width is 1 μs, this 1PPS is
NOT suited to steer various oscillators
(timing receivers, telecommunications
system, etc).
Time reference At the pulse positive edge.
Time-1PPS
Pulse
Measurement Aligned to GPS second, ±1 microsecond