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ET-112 GPS Engine Board

Feature

The best choice superior GPS application: ET-112 is ideal for OEM/ODM System Bundling. With SiRF Star II single chip, ET-112 has the same high reliability and accuracy, but lower power consumption; the engine board is superior GPS module for enabling value-added function of GPS.

Features

1. SiRF GPS Architecture
2. SiRF starII high performance and low power consumption chip set
3. Support standard NMEA 0183 protocol
4. All-in-view 12-channel parallel processing
5. SnapLock 100ms re-acquisition time
6. Cold start under 45 seconds, average
7. Superior urban canyon performance
8. FoliageLock for weak signal tracking
9. Optional build-in SuperCap to reserve system data for rapid satellite acquisition.
10. Full-duplex RS-232 port for navigation and control messages
11. Differential GPS capability through 2nd RS-232 port

Specification

Receiver:

Frequency L1, 1575.42MHz

C/A code 1.023MHz chip rate

Channels 12

Sensitivity -155dBW

Accuracy:

Position Horizontal 15m 2d RMS (SA off)

10m 2d RMS,WAAS enable(SA off)

1 ~ 5 m, DGPS corrected

Velocity 0.1m/sec 95% (SA off),

Time 1 microsecond synchronized to GPS time

Datum:

WGS-84

Acquisition Rate:

Reacquisition 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:

3.8Vdc ~ 6.5Vdc

Current supply Continuous mode: 47mA typical

Trickle power mode:

29mA typical

Backup Power +2.5V to +3.6V

Backup Current 10uA typical