Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Tue, 11 Aug 2020 05:08:51 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 07BBx19q017604; Tue, 11 Aug 2020 07:59:22 -0400 Received: from outgoing-exchange-5.mit.edu (OUTGOING-EXCHANGE-5.MIT.EDU [18.9.28.59]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 07BBwxAg017601 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 11 Aug 2020 07:58:59 -0400 Received: from w92exedge4.exchange.mit.edu (W92EXEDGE4.EXCHANGE.MIT.EDU [18.7.73.16]) by outgoing-exchange-5.mit.edu (8.14.7/8.12.4) with ESMTP id 07BBwfVN008481 for ; Tue, 11 Aug 2020 07:58:41 -0400 Received: from oc11expo15.exchange.mit.edu (18.9.4.20) by w92exedge4.exchange.mit.edu (18.7.73.16) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 11 Aug 2020 07:58:05 -0400 Received: from oc11exhyb6.exchange.mit.edu (18.9.1.111) by oc11expo15.exchange.mit.edu (18.9.4.20) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 11 Aug 2020 07:58:58 -0400 Received: from NAM02-BN1-obe.outbound.protection.outlook.com (104.47.51.49) by oc11exhyb6.exchange.mit.edu (18.9.1.111) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 11 Aug 2020 07:58:58 -0400 Received: from CO2PR04CA0157.namprd04.prod.outlook.com (2603:10b6:104:4::11) by MN2PR01MB6063.prod.exchangelabs.com (2603:10b6:208:194::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.22; Tue, 11 Aug 2020 11:58:57 +0000 Received: from CO1NAM03FT015.eop-NAM03.prod.protection.outlook.com (2603:10b6:104:4:cafe::b7) by CO2PR04CA0157.outlook.office365.com (2603:10b6:104:4::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.20 via Frontend Transport; Tue, 11 Aug 2020 11:58:57 +0000 Received: from elasmtp-curtail.atl.sa.earthlink.net (209.86.89.64) by CO1NAM03FT015.mail.protection.outlook.com (10.152.80.167) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.16 via Frontend Transport; Tue, 11 Aug 2020 11:58:56 +0000 Received: from [24.61.205.142] (helo=localhost.localdomain) by elasmtp-curtail.atl.sa.earthlink.net with esmtpa (Exim 4) (envelope-from ) id 1k5Svf-0004xC-Be for piclist@mit.edu; Tue, 11 Aug 2020 07:58:55 -0400 From: Dave Tweed To: "piclist@mit.edu" Sender: "piclist-bounces@mit.edu" Date: Tue, 11 Aug 2020 04:58:54 -0700 Subject: Re: [EE] averaging multiple samples to reject AC interference Thread-Topic: [EE] averaging multiple samples to reject AC interference Thread-Index: AdZv2C2aP+gsTTYPSw+M84jOFNHzMQ== Message-ID: <1597132734@dtweed.com> References: List-Help: List-Subscribe: , List-Unsubscribe: , Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: TempError X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Fail (protection.outlook.com: domain of dtweed.com does not designate 209.86.89.64 as permitted sender) receiver=protection.outlook.com; client-ip=209.86.89.64; helo=elasmtp-curtail.atl.sa.earthlink.net; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mitprod.onmicrosoft.com; s=selector2-mitprod-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=M7sVAIccEnfhyePQM6DUmNgCa1qJlaYVm8ARbMbvglE=; b=LQdXJlrPG/RowwJApEKFQag9mR6Mt0V1M6sTnKX4NdCSx1Oa4RwyMbpD2egftDH99xQKAbnNaF/kvzoLzGP9jp8L0Q+ia6UTN+habP2hcne6zaT1rvUCG3NgC8Jfo2o1I+kOuDMmNnKXOVsdCr8zhRHC/56c/1AyLeeBcCZ20mY= authentication-results: spf=fail (sender IP is 209.86.89.64) smtp.mailfrom=dtweed.com; mit.edu; dkim=none (message not signed) header.d=none;mit.edu; dmarc=fail action=none header.from=dtweed.com; x-originating-ip: 24.61.205.142 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-elnk-trace: 5507fdf0269a8d2672cc1e1b0924a179239a348a220c2609e7902d3b2729112342cd41bf7d8773653ca473d225a0f487350badd9bab72f9c350badd9bab72f9c x-topics: [EE] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 David C Brown wrote: > Does that mean that multimeters from America are disadvantaged in Europe? > And vv? Not at all. Averaging for 1/10 second, which is 5 whole cycles of 50 Hz or 6 whole cycles of 60 Hz, works equally well in both systems. -- Dave Tweed --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .