X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=google.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type:content-transfer-encoding:x-gm-message-state;
        bh=H/6zZekG9jqbhn8CPT03gevYqDu2aH07Dh4OEiOf4lw=;
        b=pFj3E5iwhR1gCy+MH/NuNuvykiEY3RIKIxSyg+i0IQgIPjuoXZh25gFaQkAn3W8RGJ
         F60EEg0PWql/9/xw3cny/bA8PB0Kh28JnMH1DK2KCpzIXF6jbeYVhObsgCZDnZOv3eQI
         pC6V1Cqs99d1C1S34GYlOn4f3g74NmG1vocKCNoSaWIi/JbD70zJbKmy22TnJqmnWwLC
         S2K+M+0ArpPXOEQAZOG1qpwt3NPsYr0zBnd6JaOIdvzLPKJKL3UP6HniFYHLdlr0IcPT
         mEmSjRkDI+50uQzvzStSCDclSi3NTj6vJqRS/PDSkc2DV/UDmY3TjSt5Cgnaa/YsR1pP
         setA==
MIME-Version: 1.0
In-Reply-To: <4FBE499D.2090509@laserlinc.com>
References: <4FBE499D DOT 2090509 AT laserlinc DOT com>
Date: Thu, 24 May 2012 08:26:08 -0700
Message-ID: <CAN0Jx-9co9=9cU9aGfKdyhmjQC3je+n-3z0vFM+4xYDiCGvcoQ@mail.gmail.com>
Subject: Re: [geda-user] Chassis ground vs Circuit ground
From: Russell Dill <Russ DOT Dill AT asu DOT edu>
To: geda-user AT delorie DOT com
Content-Type: text/plain; charset=UTF-8
X-Gm-Message-State: ALoCoQlpspdCG+IdOpl03daKtsGxW01VzlIDtJSb0QFKY8spQrQU/fqsq9X/LC/zUoD4wYEhtigj
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id q4OFQC9s003328
Reply-To: geda-user AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: geda-user AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

On Thu, May 24, 2012 at 7:45 AM, Joshua Lansford
<Joshua DOT Lansford AT laserlinc DOT com> wrote:
> Hello.
>   I have an Ethernet Jack with a separate chassis ground.  The grounds
> connect by zero ohm resistors beside the jack.  Supposedly this keeps noise
> from following the cable onto board.  I saw somewhere not connect chassis
> and  together on the board but though the enclosure.  The card with plated
> edges slides into a metal extrusion.  Should both edges be chassis ground or
> should one be circuit ground?   This supposedly keeps a DC difference from
> developing but dissipates noise.  What are your opinions about how to deal
> with chassis ground vs circuit ground?
> ~Joshua

http://www.sigcon.com/Pubs/news/7_02.htm
http://www.sigcon.com/Pubs/edn/multipleadc.htm
http://www.sigcon.com/Pubs/news/2_17.htm