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 w08COCj5022138 for ; Mon, 8 Jan 2018 13:24:15 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eYWHK-0004Rc-JB for rs_out_1@blacksheep.org; Mon, 08 Jan 2018 12:11:46 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eYWHJ-0004RT-Hn for rsgb_lf_group@blacksheep.org; Mon, 08 Jan 2018 12:11:45 +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 1eYWHG-0001ZN-78 for rsgb_lf_group@blacksheep.org; Mon, 08 Jan 2018 12:11:44 +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:MIME-Version:Date: Message-ID:Subject:From:To:Sender:Reply-To:Cc:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=DrWSOoun+0n4mScxWMWxhNlGANdN/D18fQUUflPcSOo=; b=Udj4R5bH3DdO+1LttpVDxQCz4F fGGJsvXdHM6rEMO3+QY04M7VruOfT5VOX742eIij0ad+LyAynudO+WZZ/AMdcjql1z4ZFdI+JaVpC D891/+ZM65o/YdWI5X2xu6/3pAwS50dEKOY1O9cXsUn8rvbs6rz4E3GElQD21138hp5w=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:34016 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 1eYWHD-00035P-Sv for rsgb_lf_group@blacksheep.org; Mon, 08 Jan 2018 12:11:39 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 4894F40022F for ; Mon, 8 Jan 2018 12:11:39 +0000 (UTC) To: "rsgb_lf_group@blacksheep.org" From: Paul Nicholson Message-ID: Date: Mon, 8 Jan 2018 12:11:39 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 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: Back in stock now on Amazon UK https://www.amazon.co.uk/Octo-channel-sound-card-Raspberry/dp/B06Y3PZ6MF I'm just testing one now using a clean shaped PPS waveform and it's showing between 200nS and 300nS timing jitter, which is about 4 times worse than it ought to be, but good enough for timing coherent reception. [...] 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: 0b2d339ae1d48966556dfb6ad64e2bce Subject: LF: Octo soundcard for Raspberry Pi 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, TO_ADDRESS_EQ_REAL 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 Back in stock now on Amazon UK https://www.amazon.co.uk/Octo-channel-sound-card-Raspberry/dp/B06Y3PZ6MF I'm just testing one now using a clean shaped PPS waveform and it's showing between 200nS and 300nS timing jitter, which is about 4 times worse than it ought to be, but good enough for timing coherent reception. I'm using a TLP2955 opto isolator on the PPS out of the GPS, fed by a smoothed supply and this seems to help. Last time I played with one of these I could get better than 1uS jitter. -- Paul Nicholson --