From: Jonathan Quick <jon_at_email.protected>
Date: Tue, 30 Jun 2015 21:57:33 +0200

Hi Dick

On Fri, June 19, 2015 2:28 am, Dick.Ferris_at_email.protected
> 'Fraid not, that file docs the backplane's external connectors: we need the
> internal ones. Jon, I tnink you pulled the backplane apart to fix an assembly
> problem soon after commissioning. If you can find old emails with practical
> 'how to' doc that would be very useful. It was not an easy process.

I'm still searching for that. I've only found the email where I asked you
about it in 2005, but not the reply as yet. I'm not sure we actually went
ahead with fixing that.

> Come Monday I can look through a couple of shelf-feet of paper files to try
> and find what we need. There is also a chance of finding the electronic design
> files, but they will need an ancient software product called 'Dash', possibly
> of German origin, to read them. The PC that it used to run on got 'cleaned
> up' years ago.

Anything yet? We're dead in the water here. Do you perhaps remember if it is
at least point to point ie. do the connectors to the High Res Sampler and
Digital Filter nodules match up pin by pin or is it more complex than that?
Also what form does the signal closing the AGC loop between those modules take
- is it an analogue voltage driving the gain of an amplifier or some sort of
digital communication channel?

> Incidentally there should be a complete spare DAS, possibly two, at Narrabri.
> We could pull the modules and send over the chassis. If it really comes to
> the crunch there used to be heavy duty custom transport cases (timber) on both
> ends of the baseline. Somewhere...

Perhaps I'd better start looking for the crate :-(

Regards
  Jon
Received on 2015-07-01 05:57:56