Alto II keyset connector plug identification

[Ian Finder]

It's actually an ITT CANON ***2DE19P***, not a DE19 as Marc indicates.

On Wed, Aug 19, 2020 at 1:48 AM Curious Marc via cctalk <
cctalk at classiccmp.org> wrote:

> We had the same problem. It’s a DE-19 connector, fits in the same envelope
> has a DB-9, but 3 rows instead of 2. You can see in this video right around
> here: https://youtu.be/GMp5EAq-Elo?t=541  . ITT-canon used to make these.
> You can look them up on eBay, which is where we found ours. Make sure you
> don’t get a two row DB-19, which is a completely different animal.
> Marc
>
> > On Aug 18, 2020, at 8:15 PM, Steve Malikoff via cctalk <
> cctalk at classiccmp.org> wrote:
> >
> > Would anyone be able to identify the 19 pin connector used on the Alto
> II keyset?
> > Shown in the second photo on
> https://www.computerhistory.org/collections/catalog/X124.82C
> >
> > The Xerox engineering doc (209962B_Alto_II_Assembly_Keyset.pdf) has it
> as P/N DE51218-1 if I interpret it correctly.
> >
> > I've looked for a while and the closest I can find appears to be Mouser
> p/n 2DEF19P
> > The cost of 136 USD (each!) is more than I (and perhaps everyone else)
> would really like to pay, and that's only for
> > the male end.
> >
> > Ideally I would like a datasheet on this original connector if possible,
> to know the pin-pin spacing and the pressed metal
> > surround dimensions.
> >
> > I've just ordered small trial quantities of screws, microswitches,
> e-clips, nutserts, rods and so on for my keyset
> > lookalikes/workalikes. Also about to start the key mapping to F5-F9
> using a popular small SOC board, which is small enough
> > to be inside a custom printed shell that the keyset plugs into.
> > That is, the 3-row 19-pin female connector side which goes through to
> USB.
> >
> > I was thinking there's no reason it shouldn't be able to work using the
> original connector with a real keyset-less Alto,
> > should any such animal be lurking out there. Hence looking at the
> feasibility of placing in a 19 pin male-female
> > connector arrangement rather than the fallback of straight-through to
> USB.
> >
> > The whole thing is still at prototype stage so even if it doesn't work
> out, well I will at least have a bunch of additions
> > to my nuts/bolts/fasteners/switches stash.
> >
> > Thanks for any help,
> >
> > Steve.
> >
>