[asterisk-users] TDM400p susceptible to EMI?

[Eric Wieling]

Sent from my Toshiba Satellite A106 computer

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
> Steve Edwards
> Sent: Wednesday, July 13, 2011 5:07 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] TDM400p susceptible to EMI?
>
> > On Wed, Jul 13, 2011 at 2:51 PM, Steve Edwards
> > <asterisk.org at sedwards.com> wrote:
> >> I have a TDM400p with 3 fxs and 1 fxo daughter cards.
> >>
> >> It's in a mini-itx case with a 'right-angle' PCI riser card so the
> >> TDM400p is 'sandwiched' between the Atom D525 CPU and the
> 2.5" hard drive.
> >>
> >> I'm getting a bunch of clicks and pops on all ports.
> >>
> >> Has anybody had a similar experience? Did you find a solution?
>
> On Wed, 13 Jul 2011, Andrew Latham wrote:
>
> > How is it grounded?  Silly I know but its possible.
>
> This box is using a picoPSU-80 80w DC-DC 'power supply' fed
> from an inline 'laptop brick.'
>
> I ran a separate lead from the chassis to the grounding plug
> on the same 'duplex' wall outlet. No joy.

cat /proc/interrupts will tell you if the card is sharing IRQs with anything else.

dahdi_tool should show you if there are any missed interrupts.