Gps Specifications; Key Features; Performance; Interface - Multitech MultiModem MTCBA-E-GP User Manual

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
Update Rate
Accuracy
Acquisition

Interface

PPS
Protocols
NMEA
Multi-Tech Systems, Inc. MultiModem Wireless EDGE, GPRS, and CDMA Modems with GPS (S000376A)
L1 frequency (1575.42 MHz), C/A code (Standard Positioning Service),
12-channel, continuous tracking receiver
TSIP @ 1 Hz; NMEA @ 1 Hz; TAIP @ 1Hz
Horizontal: <5 meters (50%), <8 meters (90%) Altitude: <10 meters
(50%), <16 meters (90%) Velocity: 0.06 m/sec. PPS (static): ±50
nanoseconds
(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.
3.3 V CMOS-compatible
TTL-level pulse
Once per second
TSIP, TAIP, NMEA 0183 v3.0, RTCM SC-104
GGA, VTG, GLL, ZDA, GSA, GSV and RMC
Messages selectable by TSIP command; selection stored in flash memory.
Chapter 1 – Introduction and Product Description
8