HP 2100A stuff - info needed

From: Tony Duell <ard_at_odin.phy.bris.ac.uk>
Date: Wed Sep 24 12:13:34 1997

On 24 Sep 1997, Frank McConnell wrote:

> I have one of the HP rack mounts in my living room right now (on its way
> to storage with the punch). Unfortunately I can't post pictures for
> y'all but here is how it goes.
>
> Basically it is a sliding shelf with a front, with a hole in the front
> for the chad box to poke through. There's a little metal plate
> screwed to the shelf near the front, as well as a couple of black plastic
> circles toward the rear. Those are just guides to keep the punch
> from wiggling around too much as it punches.

OK, that's _totally_ different to the Facit one (which was also used by
Philips according to my P850 User Guide). There's little point in me
posting details from my 4070 manual, then.

> It isn't clear to me that my 2895 punch is any different from a table-top
> unit. Smoked-plastic chad box, BTW.

That's a table-top chad box. It sounds like HP used standard table-top
punches in their own rackmount kits.

The Facit kit puts the punch on its side. The 'top panel' faces out of the
rack with the tape spools on the right hand side. There is a special chad
box (I think it's metal) that fits on the left hand side between the punch
head and the side of the rack.

> OK OK OK. I am planning on pulling all my 2100 manuals out for y'all.
> I can't do it just yet, though; there are other things ahead in the

No hurry for me. I've had this 2100 for 3 years, so if it waits another
couple there's no big problem. Just don't junk the manuals :-).

On the other hand, if you are copying schematics, please do me a copy and
I'll pay for copying/shipping.

> queue. Maybe this weekend if I can get some other pieces into place.
> Fair warning: I am a software kind of guy; I know what a schematic
> looks like but you shouldn't count on much more. OTOH, I can work
> a photocopier.

Schematics (as many as possible :-)) should be all I need.

>
> If y'all are interested in a little story about the 2100 power supply,
> I suggest getting Analytical Engine 2.3 from CHAC's web/ftp site and
> reading the interview with Barney Oliver. One spoiler: yes, it is a
> switching power supply, and there was something patentable in its
> design.

Will do....

>
> -Frank McConnell
>

-tony
Received on Wed Sep 24 1997 - 12:13:34 BST