5 Jun
2003
5 Jun
'03
3:59 a.m.
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(a)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