RTcom Radio Modems Manual do Utilizador

User ManualRTcom-Universal, GlobalMax and OutbackRadio Modems Copyright Radio-Tech Limited 1998-2000

10Warning: The use of gain antenna in some countries is not permitted. Similarly where ERP(transmitted power limits) are imposed the actual transmitte

11Guide to your RTcom-Global & Max ModemStatus LED's12-24V dcsupplyRS422 &RS485InterfaceRS232 interfaceLinks to select 2-4 wireRS485Mode

12Guide to your RTcom-OutbackGuide to your RTcom-Max (Please take care when opening cover)Optional Location for BatterySolar/12-24VdcsupplyRS422 &

13CONNECTIONSData connections should always be made using screened cable. This will insure maximum rejection ofinterference from outside sources. Alwa

14Pin Number Designation WRT Modem Notes1 DCDOptional notnormally needed2 RX (data)RS232 inputdata to modem3 TX(data)RS232 outputdata frommodem4 RTSOp

15On the Global and Max modems two dip switches are provided for the selection of the desiredoperating mode and two plug links are provided from the s

16OPERATIONThe RTcom protocol permits 100% transparent operation and direct cable emulation. Simply what goes in comesout! R.F. packet framing, code b

17COMMISSIONINGThe data rate, parity and number of data bits are set using the dual in line switch located above. If ascanner is available the chosen

18system. This results in the messages becoming fragmented, thus confusing the modem into thinkingthe end of file has been detected.The other common p

2CONTENTSINTRODCUTION 3Selecting the frequency of operation 5R.F Path Surveys 5INSTALLATIONPower Supplies 6Location 6Antenna Feeders 7Lightning Surge

3INTRODUCTIONThe RTcom-range of radio modem is intended as a direct replacement for cables over short, mediumand long distance, serial data links. The

4In many countries it is quite legal to operate systems without need for operating licences. Thesecountries include the United Kingdom, Australia, New

5Frequency of operationOften there is not a choice over operating frequency. In most countries frequency allocations are verylimited, by way of exampl

6If there is doubt over the signal reaching the receiver a path survey should be conducted. The outbackmodem includes a test mode that places the mode

7For battery powered operation in cold and damp climates the only reliable way to achieve long termoperation is to use double IP65/7 enclosures, with

8Lightning Surge Protection:A direct lightning strike can never be totally protected against or predicted. Currents exceeding10,000A can flow vaporisi

9Antenna InstallationThe type and location of the antenna used can have a profound effect on your overall systemperformance and its legality.In point