Um, ah, when you said CO, did you mean Central Office, IE telephone line?
That's what I thunk you said.
Chris Eddy

Gordon Varney wrote:

> WARNING!!!  DO NOT CONNECT YOUR SCOPE TO CO LINE!!!!!!
>
> You must use an isolation transformer or a battery operated scope to connect
> to mains power.....
>
> Gordon Varney
>
> > I'd like to investigate strange noise arriving to my CO line.
> >
> > Can I attach my scope to the CO line ?
> >
> > Are there risks I should be aware of ?
> >
> > Thank you
> >
> > Duilio Foschi