7 Mar
2005
7 Mar
'05
2:30 p.m.
It does show (on page 90 in Al's copy in
dec/pdp11) show the overall
dimensions of a M9202 Unibus Jumper module. That's a dual wide module
and it seems to be full height. (At least the height matches that of
the UDA50 shown in the UDA50 engineering drawings). What isn't shown,
unfortunately, is the details of the edge connector.
The UDA50 (hex module) is 8.41 by 15.688 inches board dimension.
As for the Q-bus, those are dual or quad, not hex, but I think that
the mechanical specs are identical to those of the Unibus.
Ok, the RQDX3 board is 8.41 high by 5.187 inches wide, same within a
few hundreds as the M9202, so that suggests the mechanicals are indeed
the same.
OK, the logic handbook (1976-77, page 10) says that should be 8.430+/-0.010
by 5.187+0.015-0.020. And it gives dimensions for the edge connector, too.
No hex dimensions on that page, but page 9 of "Computer Interfacing
Accessories" has it. (8.422x15.688+.005/-.020)
Vince