🚀 go-pugleaf

In article <7225@thor.acc.stolaf.edu> henning@thor.acc.stolaf.edu (Mark D. Henning) writes:
$
$Here is my promised posting of the solution to my 2 wire serial
$problem.  I got two answers (one of them by several people).
$
$The first answer would be very expensive and unprofitable.

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$
$The other solution I have posted below.  It is very good, however, I
$am unsure whether or not it works, because I finally convinced
$telecommunications to let me rewire the jacks (the 4 wire had been
$run, but only 2 connected.)
$
$Anyway, Thanks again to all who sent me the ideas.
$
$^Mark,
$^You actually have three wires available.

WARNING *****

This solution while sounding good will give you nothing but grief!

This is a very noisy, both in terms of signal quality and RF emissions,
answer to your problem.

You said that you have 4 wires available... use them.  You will need a
good ground return for both TX and RX signals.  Twisted pair wires also
offer common mode noise rejection and RF emissions reduction.

If you are still not convinced then I suggest that you invest in RS-232
transceivers... you'll need them.  To really solve this with this type of
circuit you will need opto-isolators.

		Hans

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