Use twisted pairs and DO NOT UNBALLANCE the grounds. Make
everything as symmetrical as possible.
Close ALL loop areas.
- Robert -
On Mon, 29 Aug 2005 06:45:06 +0200
"Amund Westin" <[email protected]> wrote:
> Many analog telephones are susceptible to radiated
> fields. It's easy to
> observe audible noise (the sine 1kHz modulation tone)when
> RF fields are
> introduced under a laboratory test (IEC61000-4-3). Do you
> have any good EMC
> design techniques which improve the resistance to such RF
> fields, when the
> telephone enlosure is plastic material and wire is
> unshielded?
> Thanks.
>
> Best regards
> Amund Westin
>
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