Re: ADT 1.22 Difficulties - what's wrong?

[Rubywand <rubywand@swbell.net>]

William Hubbard writes ...

 ....

> Although at this time I have not yet
> attempted to try them, I will clarify that the only mode I have been
> able to get anything to function in is in the modem mode.  I have also
> tried just about every available baud rate that ADT supports, with
> identical results.  The PC I am using is an XT, running MS-DOS 3.1
> (maybe 3.2?).  The other computers I have tried, I have booted to
> command prompt only, avoiding the Microsoft Windows virus (er, operating
> system).

     It could be that DOS version is a problem. I do not know what the DOS
requirements are for the PC ADT program (adt.exe); but, really, MS-DOS 3.x is
kind of old.


> 
> Also, I have seen the cable wiring diagram you included, but am unsure
> about what the 10-pin header refers to.  Is this to the DB-25 connector
> that is attached to the SSC?

     Yes. The header connects to a cable with the DB-25 connector.


> Thanks again for all the info.
 ....

     Welcome.

     Something else about the SSC: evidently, (this is a bit of a guess) the
"jumper" for selecting "communications" (modem) or "terminal" (printer)
relates to the configuration of the output. DIP Switches SW1-5 and SW1-6
appear to determine which mode you are in as far as the other DIP switch
settings are concerned.

     For example, suppose you want to do NULL modem transfers. To use the SSC
with a standard modem cable, the jumper would be set for "terminal" (printer)
in order to swap around the lines. Meanwhile, SW1-5 and SW1-6 would be set for
"communications" (modem) operation-- both ON-- in order for the SSC to behave
like its talking to a modem.

     Again, since I do not have the SSC docs or own an SSC, the above is a
guess. Of course, if you attach a NULL modem cable or the cable described in
the ADT v1.22 directions, both the jumper and the switches would be set for
"communications" (modem) operation.

     Good luck with getting ADT working!



Rubywand