Multitech MultiModem Wireless Modem GSM/GPRS with GPS MTCBA-G-GP-F1 Benutzerhandbuch

Chapter 1 – Introduction and Product Description 

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

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12-channel simultaneous operation  

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Dual sensitivity modes with automatic switching  

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Aided GPS through TSIP  

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Antenna open and short circuit detection and protection 

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Supports NMEA 0183, TSIP, and TAIP, DGPS protocols  

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DGPS capable  

 

 

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.