RTcom Radio Modems Manual de usuario descargar pdf (Pagina 3)

INTRODUCTION

The RTcom range of radio modem is intended as a direct replacement for cables over short, medium and

long distance serial data links. They are suitable for point-to-point, master to slave or scanning

telemetry links, where the modem is either used on its own or in conjunction with existing cables. The

modems also operate transparent to many industry standard network protocols, such as MODBUS and

EIBA Bus and can be used with many manufacturers PLC communication protocols.

Rtcom

Modem

Rtcom

Modem

Fig. 1 : Simple point to point link

The advantages of wire free communication offered by Radio Modems such as Radio-Tech's Universal,

Global, Europa and Outback are numerous. These include reduced installation cost, the ability to

cross awkward terrain, cross third parties lands, cross rivers and operate moving objects. There are even

frequency agile systems available for critical applications.

Slave Station (2)

Slave Station (1)

Master Station

RTcom

Modem

RTcom

Modem

Rtcom

Modem

Fig. 2 : Polled Master to multiple slave system

Thousands of RTcom radio modems are now in service throughout the world, many operating 24hrs a day,

all year round. However, for any radio communications system to be reliable, care should be taken in the

design of the whole system. Many countries impose restrictions on the frequency, power, channel power

and occupied bandwidth of transmissions. Others in addition impose strict test and certification procedures

on equipment while others permit a free for all!

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RTcom Radio Modems Manual de usuario Pagina 3