In message
<d250d01e39356a4e9cc3b4b459d665503b7b6...@ms-cda-01.advanced-input.com>,
dated Tue, 24 Jan 2012, "McInturff, Gary" <[email protected]>
writes:
Can bus requires a 120 termination, and I have a client that is trying
to do it with the bare cable, and I don't know that such cable exists
unless custom built. I'm aware of impedance controlled coax but this is
just your standard hookup cable in an appropriate jacket. We terminate
the line at each end but don't control the cable itself. Yes there will
be reflections but as I understand it the CAN standard identifies the
termination requirements but doesn't identify a specific 120 ohm cable
between the terminating resistors.
Unless the cable is very long, its impedance doesn't matter so much if
the terminations are 120 ohms. However, some cable manufacturers, such
as Belden, do list 120 ohm cables.
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Some people who are peeling the finch of the financial crisis are thinking of
biting a rook.
-
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