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LR9548S GPS Module Technical Manual v1.52
© 2006 Leadtek Research Inc. All rights reserved. Page 3/20
Preliminary Confidential - Information is subject to change without prior notice.
Specifications
Technical Specifications
Feature Item Description
Chipset
GSC3f SiRFstarIII single chip
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
General
Channels 20
10 meters, 2D RMS
5 meters 2D RMS, WAAS corrected Position
<5meters(50%), DGPS corrected
Velocity 0.1 meters/second
Accuracy
Time 1 microsecond synchronized to GPS time
Default WGS-84
Datum
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/second
3
, max.
Main power input 3.2 ~ 5.0 VDC input
Power consumption
≈
230 mW (continuous mode)
Supply Current
≈
70 mA
Power
Backup Power 1.65 ~ 5.0 VDC input.
Electrical interface Two full duplex serial TTL interface.
Serial Port
Protocol messages NMEA-0183@4800 bps (Default)
Level TTL
Pulse duration
1 µs
Time reference At the pulse positive edge.
Time-1PPS
Pulse
Measurement
Aligned to GPS second,
±
1 microsecond