User's Manual

Table Of Contents

MReX Transceiver User Manual v1.92 Firmware

Introduction

Thank you for choosing the MReX.

The MReX is a low cost, very high sensitivity transceiver module for mobile paging and general

telemetry use. The MReX is also a compliant mobile and base station transmitter.

MReX Features

• Sends and receives 512, 1200 and 2400 baud POCSAG paging messages.

• Sends telemetry data from 512 baud to 9600 baud using 4GFSK.

• Paging store and forward repeater operation with configurable duplicate reject (optional).

• Point to point wireless serial link operating at speeds up to 9600 baud. In this manner a

wireless transparent serial link can be achieved.

• 5 inputs. One Input may be reconfigured to be an open collector output.

• Configured inputs can be programmed to send messages when triggered.

• Configured output can be controlled via paging message.

• Periodic message support to ensure link integrity.

• Firmware upgradable.

• High stability 0.5PPM oscillator ensuring minimal drift over the entire specified temperature

range.

• Output power up 100mW..

• High sensitivity receiver (-127dBm at 512 baud).

• Upgradable to enable store and forward repeater functions after purchase of a licence.

• Operation through external power supply (5-9Vdc) battery pack or coin-cell.

MReX Versions

The MReX can be supplied as these variants:

• MReX-460 (421MHz to 480MHz) Telemetry and Messaging Module.

• MReX-460-SF Store and Forward Repeater with IO.

• MReX-460-5IO Telemetry and messaging Transceiver.

• MReX-460-5B 5 Button Handheld Messaging Transmitter.