DEC 874-A Power Conditioner

[Pete Turnbull]

On Jan 3 2006, 20:40, Julian Wolfe wrote:
> AFAIK, there's only one panel for all 11/03, /23, and /23+ models,
they just
> come with different badges.  You need a DEC power bus cable.  Run it
from
> the connector on the CPU box to the power controller, set it to
"remote on",
> and flip the far right switch.  Viola, power from the front panel.

Yes, but... on some QBus systems the switch is jumpered to control the
LTC (Line Time Clock signal) by grounding the BEVENT bus line.  You
ought to check the jumpers on the little electronics board before you
wire an unknown system to the power bus.  I've accidentally done it
with the wrong jumper settings and it's done no harm, but YMMV.

BTW, the connectors for the power bus are standard 3-pin AMP Commercial
Mate-N-Lock conectors, which are fairly easy to get.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York