21 Jan
2009
21 Jan
'09
7:27 p.m.
On Jan 21, 2009, at 9:06 AM, Francesca C. Smith wrote:
Grrrrr. That is a fairly rare box.
An LTC signal can be generated trivially with a tiny board that
can be buried inside the chassis.
-Dave
--
Dave McGuire
Port Charlotte, FL
Not really --
it's a tabletop CPU/system box sold for OEM use -- in
other words a standalone unit you'd build a small system, such as a
process controller, into. It has a 2 x 2 backplane, arranged
serpentine
style, so you could put up to four dual-height cards in it. It
has one
gotcha -- no line-time clock.
http://www.dunnington.u-net.com/public/PDP-11/QBus_chassis
I don't think your monitor unit was ever meant for rack mounting,
either. Apart from having no obvious mounting points for rails, the
power inlet and switch would be inside and facing the side of the
rack
if the CRT were facing out the front. I expect it's a tabletop
unit, or
was mounted inside something else. Which is not to say it might not
have once sat on a shelf in a rack, of course.
Ahh well no Line time clock is a gotcha. :-) Would have been a
little easier
to Divine its true use if the complement of cards were still in it.
Well then what use would this be to a hobbyist other than the
obvious hollow
it out and stick a PC MB in it and create some Sim pdp11 thing ??