Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id uBU99No6003534 for ; Fri, 30 Dec 2016 10:09:24 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cMt85-0000Bv-R0 for rs_out_1@blacksheep.org; Fri, 30 Dec 2016 09:05:37 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cMt84-0000Bl-UV for rsgb_lf_group@blacksheep.org; Fri, 30 Dec 2016 09:05:36 +0000 Received: from porthos.netcom.co.uk ([217.72.171.73]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cMt82-0004XI-Fd for rsgb_lf_group@blacksheep.org; Fri, 30 Dec 2016 09:05:35 +0000 X-DKIM-Result: Domain=abelian.org Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=Zs3T7y/kNYW0WYuxrs3FPQ4wtzvY/QTXS1amqK9aD0Y=; b=2xzMrmEkqqKS7JRuNbENVdU6zg Qp/Wuhr9Br0mMNWmEErBE9SRzGE3pccTTeBYIoSNEsv1JsQzVcfmv14afDaXB7gpHvt5zC/N3shoo ijtt+fVQLAoWH4kvbzQW7N5bvwBhKPdarpNC+CFdmNLhWaLoI0DIEhAEkls54/LWVX/w=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:60327 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cMt81-0007M1-J8 for rsgb_lf_group@blacksheep.org; Fri, 30 Dec 2016 09:05:33 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id DFC104002D3 for ; Fri, 30 Dec 2016 09:05:32 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: From: Paul Nicholson Message-ID: <5866235C.7080503@abelian.org> Date: Fri, 30 Dec 2016 09:05:32 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - porthos.netcom.co.uk X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - abelian.org X-Get-Message-Sender-Via: porthos.netcom.co.uk: authenticated_id: catchall@abelian.org X-Authenticated-Sender: porthos.netcom.co.uk: catchall@abelian.org X-Scan-Signature: 925300287489a1d7272e62b121c112aa Subject: Re: LF: FEC article Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 10008 > What kind of 1 Hz low pass filter gives the result shown > in "received waveform after filtering" the third image? None, except maybe after a sample and hold. But how else to graph a set of 10 voltage samples? I couldn't think of a better way. Suggestions welcome! -- Paul Nicholson --