Hello Sridhar,
yes, if you can see the traces, you can tell from the shape: CD
interconnect consists of point-to-point leads from one slot's A side to
the next one's B side, which should look quite different from Qbus,
which (except for few grant or other daisy-chained signals) consists of
bused connections between "same" pins (A side of one slot to A side of
next slot).
If you cannot inspect visually, your continuity checker is your friend.
Layout of Q vs. CD slots may be different between DEC and third-party
backplanes even if both are, say, 4*9 shape, beware...
Andreas
vance_at_neurotica.com wrote:
> Hello people. Is there any way to tell if a backplane is QQQQ or QQCD by
> looking at it, and without having to pull the backplane out of the
> chassis? What if I can find the model number of the chassis?
>
> Peace... Sridhar
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com
Received on Thu Jun 05 2003 - 10:59:00 BST