13 Dec
2006
13 Dec
'06
5:18 p.m.
"9000 VAX" <vax9000 at gmail.com> wrote:
The "how to split up power supplies on a single backplane" problem has
many solutions! But I'm pretty sure that in your backplane it
is odd/even (with maybe some weird exception for the first slot or
two). And I recall the drive power connectors being split between
the two supplies too (but not in the same way as a BA123...)
Tim.
I think in the
box, that one of the two power supplies does the
odd-numbered slots, and the other does the even numbered slots.
Loads must be distributed to cover both supplies and both supplies
need their minimum load met.
I did not know this. I thought they worked for each half of the QBUS. I have
a M9060 that I put in the very last slot to make the left side power supply
happy. Maybe it happens to be an even numbered slot.