Hi,
On Sat, 12 Jul 2014 09:17:02 -0700 (PDT)
Len Ovens <len@email-addr-hidden> wrote:
> t would not effect the serial data, but audio may be present on the same
> device, or another connected to it. I have a USB audio interface that
> introduces hum to the monitor amp.
A passive DI-box with ground-lift will to the trick. The problem here
is not the asymmetrical signal since the noise is not inducted to the
wire. It's that any computer introduces quite a lot of buzz and hiss to
the ground wire. You can easily hear when the cursor moves or when data
is read from hard-disc and so on.
Best, Dennis
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Received on Mon Jul 14 00:15:02 2014
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