----------
From: "Ken Javor" <[email protected]>
To: [email protected]
Subject: Re: EN 61000-4-6 CDNs for a high speed bus.
List-Post: [email protected]
Date: Tue, Aug 1, 2000, 6:57 PM
It is a common mode choke. Only leakage inductance (1 - 2 % of cm value)
should affect signal integrity. Possibly special winding techniques
available because of low power and low voltage (such as bifilar) could
further lessen leakage inductance.
----------
>From: [email protected]
>To: [email protected]
>Subject: EN 61000-4-6 CDNs for a high speed bus.
>Date: Tue, Aug 1, 2000, 4:31 PM
>
>
> 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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