X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 951012 for flyrotary@lancaironline.net; Fri, 20 May 2005 11:17:37 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=sladerj@bellsouth.net Received: from ibm70aec.bellsouth.net ([65.2.89.207]) by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050520151651.YMGV2732.imf24aec.mail.bellsouth.net@ibm70aec.bellsouth.net> for ; Fri, 20 May 2005 11:16:51 -0400 Received: from JSLADE ([65.2.89.207]) by ibm70aec.bellsouth.net (InterMail vG.1.02.00.01 201-2136-104-101-20040929) with ESMTP id <20050520151651.OLDL15910.ibm70aec.bellsouth.net@JSLADE> for ; Fri, 20 May 2005 11:16:51 -0400 From: "John Slade" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: More MAP measurement questions Date: Fri, 20 May 2005 11:16:48 -0400 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_002E_01C55D2D.6A46BF20" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 In-Reply-To: Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_002E_01C55D2D.6A46BF20 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Both ends need to be grounded and do not use the shield as a conductor for any function. Data running in adjacent cables can be corrupted by currents in cables next to them. If the shields are not grounded at both ends you have created an antenna. Hi Joe, That's contrary to what I've read in various places (ie aeroelectric connection). Its my understanding that only one end should be grounded, otherwise you have a potential difference, and current, along the shield. Which is right? - anyone? ------=_NextPart_000_002E_01C55D2D.6A46BF20 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Both ends need to be grounded and do not use the shield as a = conductor for=20 any function.  Data running in adjacent cables can be corrupted by = currents=20 in cables next to them.  If the shields are not grounded at = both ends=20 you have created an antenna.   
 
Hi=20 Joe,
That's=20 contrary to what I've read in various places (ie aeroelectric = connection). Its=20 my understanding that only one end should be grounded, otherwise you = have a=20 potential difference, and current, along the shield.
 
Which is=20 right? - anyone?
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