Don,

If no CDN networks are suitable - and indeed they are not for high 
communication lines -, you should consider the possibility to use the EM-clamp 
as described in EN61000-4-6. That's the way we perform tests without 
degradation of the EUT signals.

Regards,

Chris

On Tue, 01 August 2000, [email protected] wrote:

> 
> 
> Hello Friends,
> 
> We are getting into faster interconnects that can be affected by the CDNs
> called out by EN 61000-4-6.
> 
> Has anyone tested a system consisting of an EUT connected to various
> peripherals by USB, Firewire, 10 Base T or other bus configurations
> considered "high speed" today?  It seems decoupling by an inductor > 280 uH
> @ 150 kHz as indicated in the various CDNs in Annex D should cause
> considerable signal integrity issues even before the test signal is applied.
> 
> If you have tested high speed interconnects to EN 61000-4-6, how did you
> manage the signal integrity issues?  Special CDNs?  Special test setup?
> This seems like a topic everyone would be interested in.
> 
> Just call me curious,
> 
> Don
> 
> (not George)
> 
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