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APPENDIX A PCCOM DIAGNOSTIC UNDER MS/DOS The PCCOMQC program
provides a diagnostic routine to test your PCCOM 4 port serial adapter
under MS/DOS. It provides internal and external loopback tests. A
loopback plug must be connected to each port being tested, and you can
select different signal's connection to test communication signals from
hardware configuration function.
To test your PCCOM 4 port adapter under MS/DOS, please type A>PCCOMQC
( A> means system
prompt )
* Then select "PCCOM 4 port RS422" item. The hardware configuration is shown in the following.   |
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