In article ,
"Dave Plowman (News)" writes:
I need a longish serial cable to get from the workshop computer to the
bench. Say 4 mtr. I already have the D connectors and wonder what would be
the most suitable cable I have 'in stock' Only need the send and return -
no 5v. Would balanced mic cable do - or two co-ax? I do have some decent
video co-ax but two would be a bit big to fit the D connector shells.

4m is not long for an RS232 style serial cable run, and almost
anything will do, although it gets more critical at higher bit rates.

Conventionally, untwisted screened cable is used, although there
are variants which use balanced drivers for the signals, which
require a twisted pair per signal.

Not sure what you mean by "return". Do you mean send and receive, or
just unidirectional send and the ground return wire?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]