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SPECIFICATIONS
Product Features
 SiRF
GPS Architecture
SiRF starII high
performance and low power consumption chip set
Support standard
NMEA 0183 protocol
All-in-view 12-channel
parallel processing
SnapLock 100ms re-acquisition
time
Cold start under
45 seconds, average
Superior urban canyon
performance
FoliageLock for weak
signal tracking
Full-duplex RS-232
port for navigation and control messages
Differential GPS
capability through 2 nd RS-232 port
System Specification
Electrical Characteristics
Receiver
Frequency L1, 1575.42MHz
C/A code
1.023MHz chip rate
Channels
12
Sensitivity
-175dBW
Accuracy
Position Horizontal 15m 2d RMS (SA off) 1 ~ 5 m ,WAAS/EGNOS enable
Velocity
0.1m/sec 95% (SA off),
Time 1microsecond
synchronized to GPS time
Datum
WGS-84
Acquisition
Rate
Reacqusition 0.1 sec., average (recovery time for being interrupted)
Hot start
8 sec., average (with ephemeris and almanac valid)
Warm start
38 sec., average (with almanac but not ephemeris)
Cold start
48 sec., average (neither almanac nor ephemeris)
Dynamic Condition
Altitude 18,000 meters (60,000 feet) max.
Velocity
515 meters/sec. (1000knots) max.
Power
Voltage supply 3.3Vdc ~ 5.5Vdc
Current supply
Continuous mode 60mA typical
Trickle power 25mA
typical
Backup Power
+2.5V to +3.6V
Backup Current
10uA typical
Serial Port
Ports one for GPS, one for DGPS
Electrical
level : TTL level, Output voltage : 0 ~ 2.85v
Communication
Full duplex asynchronous
Code type
ASCII
GPS Protocol
SiRF binary/NMEA 0183 changeable(Default:NMEA)
GPS Function
SiRF binary >> position, velocity, altitude,
status and control
NMEA 0183 >> GGA, GSA, GSV, RMC (VTG and GLL are optional)
GPS transfer
rate Software command setting
(Default : 4800bps for NMEA )
DGPS protocol
RTCM SC-104, ver 2.00, type 1, 2, and 9
Time Mark (1 PPS Pulse)
Level
TTL
Pulse duration 100ms
Time reference At
the pulse positive edge
Measurement Aligned
to GPS sec., +/- 1us
Active Antenna Connector
MMCX
Environmental Characteristics
Temperature
Operating -40 deg. C to +80 deg. C
Storage -40
deg. C to +85 deg. C
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