GPS Module GPS Engine Board GPS模块 LR9123
Features
HardwareSoftware
-Based on the high performance features of the SiRFstarIII/LPx single chipset
-Compact module size for easy integration: 36x24x10.5mm (1.417x0.945x0.413)
-20 channels All-in-View tracking
-Hardware compatible with SiRF GSW software
-RoHS compliance
Physical Characteristics
-Length 36 mm (1.417 in)
-Width 24 mm (0.945 in)
-Height 10.50 mm (0.413 in)
-Weight 7g
-Antenna connector MMCX type
-Interface connector 20-pin straight header, 0.8mm pitch board-to-board
Performance
-Cold/Warm/Hot Start Time: 35/35/1 sec. at open skystationary environments.
-Reacquisition Time: 0.1 second
-RF Metal Shield for best performance in noisy environments
-Multi-path Mitigation Hardware
Interface
-TTL level serial port for GPS communications interface
-Protocol: NMEA-0183/SiRF Binary (default NMEA)
-Baud Rate: 4800, 9600, 19200, 3840057600 bps (default 4800)
Applications
-Car Navigation
-Marine Navigation
-Fleet Management
-AVLLocation-Based Services
-Hand-Held Device for Personal PositioningNavigation
-Ideal for PDA
GPS Module Technical Specifications
Feature Item Description
Chipset GSC3f SiRFstarIII Low power single chipset
General Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 20
Accuracy Position 10 meters, 2D RMS
5 meters 2D RMS, WAAS corrected
<5meters (50%)
Velocity 0.1 meters/second
Time 1 microsecond synchronized to GPS time
Datum Default WGS-84
Other selectable for other Datum
Time to First Fix (TTFF) Reacquisition 0.1 sec., average
(Open Sky & Snap start 1 sec., average
Stationary Hot start 1 sec., average typical TTFF
Requirements) Warm start
Cold start 35 sec., average typical TTFF
35 sec., average typical TTFF
Dynamic Altitude 18,000 meters (60,000 feet) max.
Conditions Velocity 515 meters/second (1000 knots) max.
Acceleration 4g, max.
Jerk 20 meters/second3, max.
Power Main power input 3.3 ~ 5.0 VDC
Power consumption 86mW
Supply Current
Backup Power 26mA
1.5 ~ 5.0 VDC input.
Serial Port Electronics interface Two full duplex serial TTL interface
Protocol messages NMEA-0183@4800 bps (Default)
Time-1PPS Level TTL
Pules 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.
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