Leadtek LR9548S - GPS Module Specifications; Technical Specifications Overview; Environmental Characteristics; Physical Characteristics

LR9548S GPS Module Technical Manual v1.52
© 2006 Leadtek Research Inc. All rights reserved. Page 3/20
Preliminar
y
Confidential - Information is sub
j
ect
t
o chan
g
e without
p
rior 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