Gps; Gps Antenna Connector; Gps Application Interface - MTX -3G-JAVA series User Manual

4.12

GPS

The MTX‐3G‐JAVA has an internal GPS receiver which offers the full performance of GPS technology.
The GPS receiver continuously tracks all satellites in view, thus providing accurate satellite
positioning data.
4.12.1 GPS antenna connector
The antenna connector allows for the transmission of radio frequency (RF) signals between the
modem and an external customer‐supplied antenna. The modem is fitted with a 50Ω, SMA F coaxial
jack.
It is possible to connect active or passive GPS antennas. In either case they must have 50 Ohm
impedance.
4.12.2 GPS application interface
The MTX‐3G‐JAVA has an internal GPS receiver which offers the full performance of GPS technology.
The GPS receiver continuously tracks all satellites in view, thus providing accurate satellite
positioning data.
The GPS receiver supports implemented NMEA protocols. It is able to recognize input messages from
any of these protocols (e.g., GGA, RMC GSA, GSV) and respond to them accordingly. Input messages
can be arbitrarily mixed.
The NMEA protocol is an industry standard protocol developed for marine electronics. It was
originally designed to allow data exchange between various sensors and navigation equipment
aboard ships. Nowadays, it is a de‐facto standard for GPS receiver data output. For more information
on the NMEA Standard please refer to www.nmea.org.
Venus8 offer special proprietary NMEA protocol for special features like AGPS or GPS antenna status:
(connected/unconnected)
The GPS receiver can be software controlled using NMEA protocol. We recommend the use of Java
code to read NMEA sentences.
www.mtx‐terminals.com www.mtxm2m.com
MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX‐3G‐JAVA Family
2015/10 v1.6
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