Re: Synaptic error message

From	Joe <joe@jretrading.com>
Newsgroups	linux.debian.user
Subject	Re: Synaptic error message
Date	2021-06-27 10:30 +0200
Message-ID	<CuykV-Ok-1@gated-at.bofh.it> (permalink)
References	<CuhtL-6OE-1@gated-at.bofh.it> <Cuig9-7jI-1@gated-at.bofh.it> <CuiJc-7wx-5@gated-at.bofh.it> <Cul4l-JR-1@gated-at.bofh.it>
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On Sat, 26 Jun 2021 19:11:25 +0100
Brian <ad44@cityscape.co.uk> wrote:

> 
> A choice between analogue and digital? You really were well off. We
> had to train carrier pigeons to peck out a message with their beaks
> and we needed to be adept at semaphore. Drum skills were a must.
> 

There is no 'digital', it's all analogue with a poor signal/noise ratio.

And no, I'm not kidding. Some of the more obscure digital faults turn
out to require actually looking at the data with a (real) oscilloscope,
where its analogue nature can usually be seen very clearly.

Reflections, jitter, eye height, these are all analogue issues. I once
fixed a fault where a particular simple logic IC had to come from a
particular manufacturer, and someone had fitted one of the same type
number but from a different manufacturer, that had a different input
impedance. Real bleeding-edge, state-of-the-art hardware, that was.

-- 
Joe

Thread

Synaptic error message Richard Owlett <rowlett@cloud85.net> - 2021-06-26 16:30 +0200
  Re: Synaptic error message "Andrew M.A. Cater" <amacater@einval.com> - 2021-06-26 17:20 +0200
    Re: Synaptic error message Richard Owlett <rowlett@cloud85.net> - 2021-06-26 17:50 +0200
      Re: Synaptic error message "Andrew M.A. Cater" <amacater@einval.com> - 2021-06-26 18:50 +0200
      Re: Synaptic error message Brian <ad44@cityscape.co.uk> - 2021-06-26 20:20 +0200
        Re: Synaptic error message Andrei POPESCU <andreimpopescu@gmail.com> - 2021-06-26 21:00 +0200
        Re: Synaptic error message Joe <joe@jretrading.com> - 2021-06-27 10:30 +0200
          Re: Synaptic error message rhkramer@gmail.com - 2021-06-27 14:50 +0200
  Re: Synaptic error message Darac Marjal <mailinglist@darac.org.uk> - 2021-06-27 20:00 +0200
    RESOLVED: Synaptic error message Richard Owlett <rowlett@cloud85.net> - 2021-06-27 23:10 +0200
      Re: RESOLVED: Synaptic error message Brian <ad44@cityscape.co.uk> - 2021-06-28 00:40 +0200
        Re: RESOLVED: Synaptic error message Richard Owlett <rowlett@cloud85.net> - 2021-06-28 00:50 +0200

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