In support of your great suggestion, I have myself seen (and forgot to mention)
cases in which the ground pins on a TMP connector on a Ten Ten PC board had
come loose and thus the cable was not grounded on one end, a perfect way to
pick up digital noise!
Thanks for adding this good suggestion.
Gary
> On Oct 2, 2018, at 2:10 PM, Stuart Rohre <Rohre@arlut.utexas.edu> wrote:
>
> Another idea for the cause of the noise clicks is a bad ground in
> interconnecting cable for this circuit. Try a clip lead end to end of the
> patch cable.
>
> Good Luck! Had a similar noise when a custom builder we were using left off
> a second (ground) conductor for a cross chassis path for a digital clock
> signal, TTL btw. We wadded a second grounded condcutor wrapped as twisted
> pair, and cured our noise.
>
> Stuart Rohre
> K5KVH
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