X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 27 Mar 2007 16:24:41 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-kukur.atl.sa.earthlink.net ([209.86.89.65] verified) by logan.com (CommuniGate Pro SMTP 5.1.7) with ESMTP id 1946271 for lml@lancaironline.net; Tue, 27 Mar 2007 15:19:27 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.65; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=M/aFAw9GP3vSUndGDO3I2eseqAVwVtVzpJCeoj9jQRTei0ufUMEQ/0N0GZAULq+1; h=Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [216.57.118.220] (helo=ccaselt) by elasmtp-kukur.atl.sa.earthlink.net with asmtp (Exim 4.34) id 1HWHBo-0007Xm-Pq for lml@lancaironline.net; Tue, 27 Mar 2007 15:18:41 -0400 X-Original-Message-ID: <069601c770a4$b9e8d5e0$2512020a@nvidia.com> From: "colyncase on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Essential Bus?? X-Original-Date: Tue, 27 Mar 2007 12:18:38 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0693_01C7706A.0CAC6F20" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940c05de5f5c5248dd13ab59cfad018d53f350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 216.57.118.220 This is a multi-part message in MIME format. ------=_NextPart_000_0693_01C7706A.0CAC6F20 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable the only thing an essential bus gives me is a list of items that I do not want to shed how many micro-processors in your panel? micro-processors have an ugly habit of rebooting when you remove power, = even for a moment. cross-tie doesn't help that problem. by the time you turn on the = cross-tie you are looking at seconds to minutes to get back whatever = function those micro-processors were doing. so you end up with some sort of diode setup. ...which will end up = being 2 diodes per important box or 2 diodes per essential bus. automatic also useful when you are in a high workload situation, which = you would be. Colyn ------=_NextPart_000_0693_01C7706A.0CAC6F20 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
the only thing
an essential bus = gives me is=20 a list of items that I do not want to
shed
 
how many micro-processors in your=20 panel?
micro-processors have an ugly habit of = rebooting=20 when you remove power, even for a moment.
 
cross-tie doesn't help that = problem.  by the=20 time you turn on the cross-tie you are looking at seconds to minutes to = get back=20 whatever function those micro-processors were doing.
 
so you end up with some sort of diode=20 setup.   ...which will end up being 2 diodes per important box = or
2 diodes per essential = bus.
 
automatic also useful when you are in a = high=20 workload situation, which you would be.
 
Colyn
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