User`s guide
Contents 
Chapter 1 Introduction .......................................................................................................1-1 
About this Manual..............................................................................................................1-1 
The RMX232 Radio Modem ..............................................................................................1-1 
Features.............................................................................................................................1-2 
Chapter 2 Installation and Operation ................................................................................2-1 
Serial Interface...................................................................................................................2-1 
Connecting for the First Time.............................................................................................2-1 
Front Panel Indicator Lights...............................................................................................2-3 
Mounting the Radio Modem...............................................................................................2-3 
Positioning the Radio Modem............................................................................................2-4 
Potential RF Interference...................................................................................................2-4 
Operating Problems...........................................................................................................2-4 
Chapter 3 Configuration Commands ................................................................................3-1 
Entering Configuration Mode .............................................................................................3-1 
Command Format..............................................................................................................3-1 
Configuration Commands in Detail ....................................................................................3-2 
Chapter 4 Modem Operation Explained............................................................................4-1 
Flow Control.......................................................................................................................4-1 
Serial Port Flow Control..................................................................................................4-1 
XON/XOFF Flow Control (Software)...............................................................................4-2 
RTS/CTS Flow Control (Hardware).................................................................................4-2 
No Flow Control ..............................................................................................................4-2 
Radio Modem Port Flow Control.....................................................................................4-2 
Radio Modem Addressing Scheme ...................................................................................4-3 
On-Air Data Speed ............................................................................................................4-4 
DTR Power Control............................................................................................................4-5 
Operating Modes ...............................................................................................................4-5 
Acknowledged Point-to-Point..........................................................................................4-5 
Acknowledged Point to Multipoint ...................................................................................4-7 
Broadcast Multidrop........................................................................................................4-8 
MultiMaster Mode ...........................................................................................................4-8 
Repeater Mode ...............................................................................................................4-9 
Diagnosing Network Problems Using Ping Test ..............................................................4-10 
Performing Site Reliability Tests Using Radar Test .........................................................4-10 
User’s Guide    Page ii 










