[time-nuts] Austron 2100 HPIB/GPIB/IEE-488 cards

[paul swed]

Right you are and build-able. I was mixing the 2100 up with the 2200 GPS
unit sorry.
Regards
Paul.


On Thu, Jun 27, 2013 at 3:46 AM, <GandalfG8 at aol.com> wrote:

> Hi Paul
>
> I'm not sure if we're talking about the same thing, on the GPIB  interface
> schematic I'm looking at there's four 74LSxxx ICs used for  address
> decoding
> and buffering followed by an MC68488P interface adapter  driving a pair of
> MC3447P bidirectional bus transceivers and that's  it.
>
> The manual I'm using is at......
>
> http://rapidshare.com/files/316522356/Austron_2100_Timing_Receiver.pdf
>
> or as a smaller "optimised" file......
>
> http://rapidshare.com/files/303627596/Austron_2100_Timing_Receiver_Opt.pdf
>
> Regards
>
> Nigel
> GM8PZR
>
>
>
> In a message dated 27/06/2013 03:20:25 GMT Daylight Time,
> paulswedb at gmail.com writes:
>
> There is  a strangle hdlc or dual port ram thing.
>
>
> On Wed, Jun 26, 2013 at  5:15 PM, <GandalfG8 at aol.com> wrote:
>
> > Hi Iain,
> >
> >  There's probably not too many of these floating about but it's a very
> >  straightforward circuit and the Motorola ICs are still available on
> Ebay,
> > albeit
> >  probably all recycled, so building one on  Veroboard or similar
> shouldn't
> > be  difficult.
> >
> >  There's no programmable devices in the interface circuit and the  manual
> > instructions for retro-fitting are just plug and go so the  standard 2100
> > firmware must contain what it needs for the GPIB  interface.
> >
> > Regards
> >
> > Nigel
> >  GM8PZR
> >
> >
> > In a message dated 26/06/2013 21:29:53 GMT  Daylight Time,
> iain at g7iii.net
> > writes:
> >
> > Hi   Folks,
> >
> > Having recently acquired two Austron 2100 Timing  Receivers  which
> > did not have the GPIB/HPIB/IEEE-488/whatever you  wish to call  it
> > cards in, I was wondering if any time-nuts had  any hanging  around
> > that they wanted to dispose of  ?
> >
> > If so, let me know off list,  I'm certainly interested  in two (esp
> > as I'm currently hoping cleaning the  switch contacts  with
> > isopropyl alcohol will make them function properly   again)
> >
> > Having HPIB would get around the problem if the  cleansing  fails
> > and remote command and control would be very  useful  anyway
> >
> >
> > All the  Best
> >
> >  Iain
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