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Tom Tom
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GPS Smart Antenna PS2
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Product Features
Integrated GPS processor, CPU, and DRAM
WAAS(Wide Area Augmentation System) demodulator
Advanced power management for power saving and stand-by modes.
Improved multi-path rejection
1920 time/frequency search channels for signal acquisition
All-in-view 12-channel parallel processing
Cold start under 60 seconds
Maximizes GPS position availability
SingleSat updates in reduced visibility
Superior urban canyon performance
FoliageLock for weak signal tracking
Reduce need for external sensors
System Specification
Electrical Characteristics
[Receiver]
Frequency
C/A code
Channels
Sensitivity
L1, 1575.42MHz
1.023MHz chip rate
12
-170dBW
[Accuracy]
Position Horizontal
Position Vertical
Velocity
Time
25m 95% (SA off),
40m 95% (SA off),
0.2m/sec 95% (SA off),
340 nsec. 95% C/A code
[Datum]
WGS-84
[Acquisition Rate]
Reacqusition
Hot start
Warm start
Cold start
SnapStart
0.1 sec., average (recovery time for being interrupted)
8 sec., average (with ephemeris and almanac valid)
38 sec., average (with almanac but not ephemeris)
45 sec., average (neither almanac nor ephemeris)
< 3 sec, for up to less than 25 minutes off period
[Dynamic Condition]
Altitude
Velocity
Acceleration
Jerk
< 60,000 feet
< 1000 knots
4g., max.
20 meters/ sec***3, max
[Power]
Voltage supply
Current consumption
3Vdc or 5 Vdc, based on customer request
160mA typical for Continuous mode 60mA average for 20% duty cycle Trickle-Power mode 3mA average for Push-to-Fix mode
[Serial Port]
Ports
Electrical level
Communication
Bit Pattern
Code type
GPS Protocol
GPS Function
GPS transfer rate
DGPS protocol
one for GPS
TTL level or RS232 level
Full duplex asynchronous
8 bits, 1 stop bit, no parity
ASCII for NMEA/ Binary for SiRF
SiRF binary/NMEA 0183 changeable
SiRF binary >> position, velocity, altitude, status and control
NMEA 0183 (v2.2) >> GGA, GSA, GSV, RMC, VTG, and GLL
NMEA ASCII 4800bps
SiRF Binary Software command setting: default 19200 bps
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
Environmental Characteristics
[Temperature]
Operating -40 deg. C to +85 deg. C
[Humidity]
Operating 5% to 95% R.H.
Physical Characteristics
[Dimension]
Diameter 59mm
Height 20mm
Weight 7gm
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