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

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From: chasgra (chasgra@email.msn.com)
Date: Thu Sep 28 2000 - 10:29:43 PDT


Now Doug Smith may chuckle at this but I have used a scope
probe for just this sort of measurement. (The ground
lead is removed). The trick(at least for me) is not the
probe so much as the test up and consistency.

-----Original Message-----
From: Barry Ma <barry_ma@altavista.com>
To: si-list@silab.eng.sun.com <si-list@silab.eng.sun.com>
Date: Thursday, September 28, 2000 9:20 AM
Subject: [SI-LIST] : Fwd: Probing power plane with analyser.

>------- 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
>_______________________________________________________________________
>
>Free Unlimited Internet Access! Try it now!
>http://www.zdnet.com/downloads/altavista/index.html
>
>_______________________________________________________________________
>
>
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