24 Sep
2003
24 Sep
'03
12:10 a.m.
If i remember right,
only four wires are used in the current loop
interface.
two for xmit and two for rcve.
most tty's did 180 baud or near it.
the best way i have found to interface it, is to get
one of the orignal ibm pc xt 8 bit, 1 port serial
cards (the ones with the db-25 connector on the back).
consult the instructions (i have a copy of those here
somewhere) reverse the jumber pack for current loop
and connect the proper pins for current loop too.
that usually works for me.
Bill
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