Setting a DECserver free

From: meltie <lists_at_microvax.org>
Date: Fri Mar 19 04:49:39 2004

On Thursday 18 March 2004 11:13, Adam Goldman wrote:
> If you Google for 90stalps there is a document where you can look up by
> the DExxx model number (from the module's label) whether it needs the
> 12/5 supply or the 5-only supply. It also gives pinouts. Note that the
> pinouts for the 12/5 and 5-only supplies are incompatible.
>
> IIRC you can double-check the pinout with a continuity tester. The metal
> bolt between the DIN and the backplane connector is grounded.
>
> The pinout in 90stalps is as viewed from the PLUG on the power supply
> cord.
>
> From my notes, here is a pinout for the 5-volt-only modules as viewed
> from the JACK on the module.
>
> G N P |~~~~~~~~~~~~~~~~|
> G K P [] | backplane conn |
> G P |________________|
>
> G=ground, P=+5V_at_2A, N=NC, K=empty
> this is a 7-pin mini-din, but 8-pin plugs can be used. bending one of
> the pins might help with insertion. ps/2 connectors will NOT work.
>
> I have thrown together a supply using a small enclosed switching supply.
> It works well. These days, one of those 5-volt switching wallwarts is
> probably also a possibility.
>
> Since DIN connectors accept fairly thin wire, you'll want to parallel 3
> wires per rail (i.e. one per pin) to provide current handling capacity.
>
> -- Adam

Wonderful! I found the document in a single search, and it's really
helpful, as are you :)

Thanks!
alex/melt
Received on Fri Mar 19 2004 - 04:49:39 GMT