IBM 5100 Communications Manual page 38

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After connecting the cable, use the following procedure to verify the operation of
the communications feature:
1. Insert the tape cartridge containing the communications program in the 5100
built-in tape unit.
2. Enter the command )MODE COM if you are using APL or UTI L MODE COM
if you are using BASIC, and press EXECUTE. If the program displays the
options T or P, enter a T. (If the printer is not attached, the options will not
be displayed.) The program should load and display HOME on the bottom
line of the display screen.
3. Enter the commands to initialize the communications program:
a. Hold down the CMD key and then press the alphameric 1 key. The
character
~
should be displayed. Enter the command SYSTEM and the
parameter APL, APL.SV, BASIC, or OTHER depending on the remote
system you will be communicating with. For example, if you will be
communicating with an APL.SV system, the command you enter is
~SYSTEM
APL.SV. Press EXECUTE to process the command.
b. Enter the
~RATE
command in the same manner. The parameters for the
~RATE
command are 134.5 and 300, which are the bits per second (bps)
rate of the communication line. If your system uses 300 bps, enter
~RATE
300 and press EXECUTE to process the command.
4. Establish the line connection by dialing the remote system if you are using
switched lines. If you are using non-switched lines, the connection should now
be complete.
5. Enter the sign-on code for the remote system and press EXECUTE. The
remote system should acknowledge the sign-on to indicate that the 5100 is
online.
6. Sign off. This completes the installation and checkout of the Communications
Adapter feature. If you have any difficulty in checking out the feature, cali
your IBM marketing representative for assistance.