User's Manual

Table Of Contents

EX7100 Technical Manual - Introduction

Introduction

1.1 General

The EX7100 is a unique digital radio primarily designed to meet the requirements of

customers who require thin route communications, especially in remote and rural

locations, but also in urban areas where digital linking is required. It is an ideal solution

where copper wires are too expensive or difficult to install.

The EX7100 is a 64kbit/s digital radio that operates within a 25kHz RF channel. It has a

number of unique features including:

> On-demand operation,

> Automatic fax and modem data detection (with internal multiplexer installed),

> G.703 and Synchronous Data interface (V.35) to connect to external devices,

> An optional internal six circuit, voice/fax/data, multiplexer,

> High system gain with 2 Watt or 10 Watt power amplifier options,

> Inherent security through proprietary digital encoding,

> Robust design to operate in a variety of environmental conditions.

1.2 Configuration

The EX7100 is a point to point, line of sight system available in two configurations as

detailed below:

1.2.1 64 kbit/s digital “pipe”

The 64kbps single channel configuration uses G.703 and/or synchronous data interfaces

(V.35), for connection to external OEM multiplexers, bridges, routers, LAN’s, etc. The

actual transmitted bit rate including system overheads is 68 kbit/s, allowing a full 64 kbit/s

for the user.

This congifuration is also used to provide a full duplex repeater option, based on two

terminals back-to-back at G.703 interface. A repeater enables the user to greatly increase

the distance between the end terminals