I could understand your suggestion wrt to twisted pair on the K2 serial
cable if it were using RS-423 and therefore balanced receivers with no
parallelling of the signal returns. However, how does twisted pair
really help if the return in the twisted pair is in parallel with that
for the other signal lines and any functional earth bonding strap
between the two pieces of equipment?
Of course, PCs don't use RS-423, so one could only implement that for
data to the K2.
Jim Brown wrote:
Another issue, if you're using a K2, is that the serial cable that was
built from instructions (and the parts provided) used parallel
conductors rather than twisted pair. That was a VERY poor design choice
-- parallel conductors are very susceptible to RF and other noise, and
twisted pair inherently rejects RFI and noise. That's why CAT5/6/7
cable is twisted pair.
--
David Woolley
Registered owner K2 06123
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