Multitech MTCBA-G-GP-F1 Datový list stáhnout pdf (Strana 8)

Chapter 1 – Introduction and Product Description

Multi-Tech Systems, Inc. MultiModem Wireless EDGE, GPRS, and CDMA Modems with GPS (S000376A) 8

GPS Specifications

Key Features

• 12-channel simultaneous operation

• Dual sensitivity modes with automatic switching

• Aided GPS through TSIP

• Antenna open and short circuit detection and protection

• Supports NMEA 0183, TSIP, and TAIP, DGPS protocols

• DGPS capable

Performance

General

L1 frequency (1575.42 MHz), C/A code (Standard Positioning Service),

12-channel, continuous tracking receiver

Update Rate

TSIP @ 1 Hz; NMEA @ 1 Hz; TAIP @ 1Hz

Accuracy

Horizontal: <5 meters (50%), <8 meters (90%) Altitude: <10 meters

(50%), <16 meters (90%) Velocity: 0.06 m/sec. PPS (static): ±50

nanoseconds

Acquisition (Autonomous Operation in Standard Sensitivity Mode)

Reacquisition: <2 sec. (90%)

Hot Start: <10 sec. (50%), <13 sec. (90%)

Warm Start: <38 sec. (50%), <42 sec. (90%)

Cold Start: <50 sec. (50%), <84 sec. (90%) (Cold Start requires no

initialization. Warm Start implies that the last position, time, and almanac

are saved by backup power. Hot start implies ephemeris also saved.

Optional (COCOM) Limits

Altitude: 18,000 m

Velocity: 515 m/s

Either limit may be exceeded, but not both.

Interface

PPS

3.3 V CMOS-compatible

TTL-level pulse

Once per second

Protocols

TSIP, TAIP, NMEA 0183 v3.0, RTCM SC-104

NMEA

GGA, VTG, GLL, ZDA, GSA, GSV and RMC

Messages selectable by TSIP command; selection stored in flash memory.

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Multitech MTCBA-G-GP-F1 Datový list Strana 8