Re: [SI-LIST] : Fwd: Probing power plane with analyser.

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From: Douglas C. Smith (doug@emcesd.com)
Date: Thu Sep 28 2000 - 12:09:12 PDT


Hi Barry,

A Balanced Coaxial probe is ideally suited for this. You can
build it (see http://www.dsmith.org/pdf/cd94scr.pdf) or buy
one from Fisher Custom Communications.

Doug

Barry Ma wrote:
>
> ------- Start of forwarded message -------
>
> To: "'EMC - PSTC Forum'" <emc-pstc@majordomo.ieee.org>
> Cc: Roman Seifert <Seifert@ali.com.au>
> Subject: Probing power plane with analyser.
> From: "Cameron O'phee" <O'phee@ali.com.au>
> Date: Thu, 28 Sep 2000 11:59:24 +1100
>
> Hello All,
>
> I have been asked by one of our design engineers if I can measure the RF
> signature on the 3v plane on one of our PCB designs. The purpose of this is
> to compare it to proposed changes for cost reduction, ie removal of bypass
> caps. I would assume I need some sort of CDN but I have no designs for this
> application. Does anyone have any ideas on how I can safely probe a 3v DC
> power rail with an EMC analyser (HP8591E)?
>
> Regards,
>
> Cameron O'Phee.
> EMC & Safety Precompliance.
> Aristocrat Technologies Australia.
>
> Telephone : +61 2 9697 4420
> Facsimile : +61 2 9663 1412
> Mobile : 0418 464 016
>
> Thanks.
> Best Regards,
> Barry Ma <bma@anritsu.com>
> ANRITSU www.anritsu.com
> Morgan Hill, CA 95037
> Tel. 408-778-2000 x 4465
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-- 
-------------------------------------------------------
    ___          _       Doug Smith
     \          / )      P.O. Box 1457
      =========          Los Gatos, CA 95031-1457
   _ / \     / \ _       TEL/FAX: 408-356-4186/358-3799
 /  /\  \ ] /  /\  \     Mobile:  408-858-4528
|  q-----( )  |  o  |    Email:   doug@dsmith.org
 \ _ /    ]    \ _ /     Website: http://www.dsmith.org
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