User's Manual

TROUBLE SHOOTING

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234839, Revision 2.2

“I have used the RFI-9256 with several different PC’s and portables using very similar settings, yet I have noticed

that the Transceivers range is reduced considerably when I am using certain computers. Why is this?”

It is possible that certain laptop and desktop computers, which you are using, emit interference that is

detrimental to the RFI-9256’s operation. Try moving the RFI-9256 as far away from the computer as

the cable connected to it will allow, this should reduce the impact of interference from the computer.

“I have the RFI-9256 set up between two computers and have been unsuccessful in my attempts to establish a link

using LapLink.”

There is a function LapLink supports that allows it to automatically change the baud rates during

connections. As the RFI-9256 does not support automatic baud rate changing, the effects of LapLink

changing its baud rate will cause the connection to fail. If you are uncertain whether it is LapLink or the

radio modem itself, try establishing a link using a terminal package such as RFI’s InTerm. If the link

succeeds, then it is LapLink causing the problem and unfortunately there is no documented solution for

it.

“I have tried to access the menu via the RFI-9256 front panel (Mode 6 – config) but I get no menu on my terminal

program.”

To resolve this problem, it is best you double-check the settings of firstly the cable connection, then the

terminal program you are using (e.g. RFI’s InTerm) and finally the settings of the radio modem itself.

Step 1: Make sure you have the Auxiliary port of the modem connected to your PC. The menu system

is designed to pop on the Auxiliary port NOT the Main port.

Step 2: As a rule of thumb, accessing the menu via the Front Panel Modes ALWAYS sets the Auxiliary

port’s baud rate to 19200bps. Make sure you have the following terminal settings:

Communications Settings (RS-232 Com Port)

Baud Rate: 19200

Data Bits: 8

Parity: None

Stop Bits: 1

Flow Control: No Flow

Terminal Settings

Emulator Mode: None or Standard TTY

Local Echo: off

LF to CR on incoming: off

LF to CR on outgoing: off

Step 3: There is no reason why ANY settings of the radio modem should affect the ability to access the

Menu via the Front Panel Modes. If you still cannot access the menu, check to see whether the cable

you are using is faulty or not. Finally, if you still cannot access the menu please call your supplier.