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Version 1.73 Copyright © 1997 Link Communications Inc. 1/18/97
Controller to Computer or Modem Cable
Controller
DB-9
Description Computer
DB-9
Computer
DB-25
Modem
DB-9
Modem
DB-25
2 Data Out of Controller 2 3 3 2
3 Data Into Controller 3 2 2 3
5 Ground 5 7 5 7
Communications Parameters
After connecting your terminal, computer, or modem (either packet or telephone) to the RLC-
Club, you need to make sure that the communications parameters match on both ends. The
default settings for the RLC-Club are 9600 N81:
Baud Rate 9600
Parity None (N)
Word Length 8
Stop bits 1
You can change the baud rate the RLC-Club uses with command 024. If you are using a
modem, you may be able to set the baud rate that the modem uses to communicate with the
controller to be different than the speed at which it connects to the other modem. In other
words, a 2400 baud modem may be able to connect to the controller at 9600 baud and to the
other modem at 2400 baud.
Troubleshooting
If you can't get the connection between your computer or serial terminal and the controller to
work, there are several things you can check. Make sure that the serial cable is properly
connected between a serial port on your computer and the serial port on the controller and that
the controller is powered up. Load your communications software (Procomm, Telix, the
Windows terminal program, etc) and make sure it is set for the right comm port and baud rate.
Whenever you reset the controller (or cycle the power) it will output a serial message you
should see on the screen. Pressing enter should get you a "DTMF>" prompt that indicates that
it is ready to accept the same commands you might enter from a radio's DTMF pad. If neither
the reset message or pressing enter gets any response, double check that you have the comm
port set right. Then disconnect the serial cable from the controller and short pins 2 and 3 on
that end of that cable together (those are the data in and out pins). Then type on the keyboard
and see if what you type shows up on the screen - it should (even with echo turned off). If you
quit shorting those pins, the data should not show up on the screen. If you cannot get the data
to show up on the screen by shorting those two pins, the problem is either in the computer or
the cable (the controller isn't even hooked up). The most common problem is having the comm
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