Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w19H7h16032217 for ; Fri, 9 Feb 2018 18:07:45 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ekC3C-00011J-PB for rs_out_1@blacksheep.org; Fri, 09 Feb 2018 17:01:26 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ekC39-00011A-Si for rsgb_lf_group@blacksheep.org; Fri, 09 Feb 2018 17:01:23 +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 4.89) (envelope-from ) id 1ekC36-00088z-9o for rsgb_lf_group@blacksheep.org; Fri, 09 Feb 2018 17:01:22 +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=VqnJBsp8wFYtX2WncKEK7LJq/wxE7opHHdLF+QEmm24=; b=IhKIIpIaK6jUpvKP1B8bljEUuM BBu10dq57y2bZFazLSGPognzbVQHevOxeF7qPElalpaw9ZoEQlcmjJjlk68JJAe8KOC761w5oHGNi /3huRzHtSrcelypyl/aPGvXSlAJxW0OV3khIxeN2rEZxHFabOI5HEUdOM/ac+JGeh2wY=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:42885 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1ekC35-0001Ee-Sz for rsgb_lf_group@blacksheep.org; Fri, 09 Feb 2018 17:01:19 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 4927640070D for ; Fri, 9 Feb 2018 17:01:19 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <52dea779-7aae-aff8-1072-ad24cdcd007c@freenet.de> <4024a3ab-eb61-7801-e9ad-5715c5f49546@abelian.org> From: Paul Nicholson Message-ID: Date: Fri, 9 Feb 2018 17:01:19 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US 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-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: I think that the sample clock triggers a conversion on all the channels at the same instant. Have a look at the data sheet for the CS42448 and see what you think. I put a copy here - http://abelian.org/vlf/tmp/cs42448.pdf [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: bb61bee384896e075004ae5ec954ddd2 Subject: Re: LF: Testing Audioinjector Octo with RPi3 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS autolearn=no version=2.63 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 I think that the sample clock triggers a conversion on all the channels at the same instant. Have a look at the data sheet for the CS42448 and see what you think. I put a copy here - http://abelian.org/vlf/tmp/cs42448.pdf Some while ago I applied the same signal to all inputs and there was only a small phase difference between the channels. I'll have to try that again more carefully to make sure. I'm in the process of making up detailed instructions on how to set up a Pi and Octo or stereo card and GPS with vlfrx-tools. I might need a bit of advice from Wolf or someone on how to use the rawtcp: mode of Spectrum Lab to pull signal from it. -- Paul Nicholson --