X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from willowsprings.uwyo.edu ([129.72.10.31] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTPS id 3741369 for flyrotary@lancaironline.net; Wed, 01 Jul 2009 10:07:52 -0400 Received-SPF: none receiver=logan.com; client-ip=129.72.10.31; envelope-from=SBoese@uwyo.edu Received: from ponyexpress-ht2.uwyo.edu (ponyexpress-ht2.uwyo.edu [10.84.60.209]) by willowsprings.uwyo.edu (8.14.2/8.14.2) with ESMTP id n61E7AHe008300 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=FAIL) for ; Wed, 1 Jul 2009 08:07:10 -0600 (MDT) (envelope-from SBoese@uwyo.edu) Received: from Boesexps (172.26.4.5) by uwmail.uwyo.edu (10.84.60.199) with Microsoft SMTP Server id 8.1.375.2; Wed, 1 Jul 2009 08:07:10 -0600 From: sboese To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Conflict in read Date: Wed, 1 Jul 2009 08:06:19 -0600 Message-ID: <2D08AB1119F64E8894713A145A257FF4@gg.uwyo.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Chris, The O2 sensor connection to the EM2 should be all you need. I have an = O2 sensor connected to my EC2 pin 28 and can interrogate the EC2 for the O2 sensor data, but my understanding is that the EC2 does not use the O2 = sensor input for any control purposes. My EC2 always worked the same whether = the O2 sensor was connected to it or not. Steve Boese -----Original Message----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Christopher Barber Sent: Wednesday, July 01, 2009 2:45 AM To: Rotary motors in aircraft Subject: [FlyRotary] Conflict in read Another question that may be more suited for Tracy (but I hate bothering = him ever and I still hope to make progress while he is away), however, I = was re-reading both the manuals for the EC2 and EM2 and looking at the=20 pin out sections for the d-sub connections. I noticed that for the EC2=20 it shows pin 28 being for the O2 sensor, however, in the EM2 Manual it=20 shows pin P2-8 as also being for the O2 sensor.=20 Currently mine is only hooked up the the EM2 P2-8 pin. I do not ever=20 recall that there should be two O2 sensors installed and I was under the = impression that you would not have two leads off of one sensor to two=20 different instruments. So, what line of text did I miss (not unheard of = and one of the reasons I keep re-reading the manuals....as I experience=20 more, some of the stuff makes more sense with an additional reading even = though I doubt I will ever "get" the calibration stuff...sigh) about=20 where the 02 sensor should be connected to. Is it preferred to go the=20 the EM of the EC....or do you have a two wires from 02 sensor, one to=20 the EM and one to the EU....or something else all together?=20 Thanks. All the best, Chris Barber Houston -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html