Re: signal leads that pick up less ambient noise?

Martin Brown <'''newspam'''@nonad.co.uk> writes:

Does it look like a PWM square wave or a sine wave?

Sine.

>
I only ever see ripple if I stick my finger on an probe and my
environment is really rather electrically noisy.
>
You haven't got one of those ultrasonic humidifiers nearby?

No. I know though that a lot of the noise is coming from one of the
nearby older computers, because if I shut that computer off, the noise
drops dramatically.

>
What happens if you put a 0.1uF capacitor in series with the coax
shield coax so that there can be no DC current flow on the earth
connection?

This does not appear to have any effect on the noise.

--
Christopher Howard