From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f41.google.com (mail-wg0-f41.google.com [74.125.82.41]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id BC0D32010C5 for ; Sat, 24 Mar 2012 01:21:15 -0700 (PDT) Received: by wgbds1 with SMTP id ds1so1532643wgb.4 for ; Sat, 24 Mar 2012 01:21:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:mime-version:content-type:from:in-reply-to:date:cc :message-id:references:to:x-mailer; bh=0cnFg7hWFYKfJjgT79cGrmM7za/TcBe6xQfbvBMvYBo=; b=fVXKMb1/6EnfT40QE35Q8Yrv82P3qbjwIOJbW2P0laLAmMaJ7P+yYfhKoi2yGIT01f X2db7vsaeYzuKRGzwXCnSlGIXUYXcgLboksg/lLhHxm76+b1vozrXU7NV7y4gyy1Gd4W 9D8S0JrNzFJmiOo/drcNLuTFK7cm85GdA08icGFo7YaYexgroxNHawlvs7Hf7AvuBBM4 qeiQUV8Gi0seBUa0bLBfkWB4JFm6f0Xg5okBBj49dNQGfCYEflOHxVzOZlDv4/Uy8xJp PEce4IXFIo/cu0nZ8qCLUPzKNU8mhYN3oza59REUIyoTFEeyax4pNrQETjDpyujpR49I iF5Q== Received: by 10.180.80.9 with SMTP id n9mr3473439wix.4.1332577273426; Sat, 24 Mar 2012 01:21:13 -0700 (PDT) Received: from [192.168.9.180] ([83.145.64.135]) by mx.google.com with ESMTPS id l5sm20631567wia.11.2012.03.24.01.21.09 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 24 Mar 2012 01:21:09 -0700 (PDT) Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: multipart/signed; boundary="Apple-Mail=_4AFBB2BE-91B6-4230-8A00-C4099249E409"; protocol="application/pkcs7-signature"; micalg=sha1 From: Andrew McGregor In-Reply-To: <4F6D6BEB.1070606@c3energy.com> Date: Sat, 24 Mar 2012 16:21:08 +0800 Message-Id: References: <4F6CE652.2010309@c3energy.com> <4F6D285C.1070505@c3energy.com> <4F6D3E94.4080902@c3energy.com> <4F6D6BEB.1070606@c3energy.com> To: "Ron Frazier (NTP)" X-Mailer: Apple Mail (2.1257) Cc: questions@lists.ntp.org, "thumbgps-devel@lists.bufferbloat.net" Subject: Re: [Thumbgps-devel] YEA! My Sure Electronics GPS just arrived. X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Mar 2012 08:21:16 -0000 --Apple-Mail=_4AFBB2BE-91B6-4230-8A00-C4099249E409 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I know why it isn't centered... it's because it is taking a USB polling = round trip to get the signal back. The PPS happens somewhere between = two polls every 1 ms, and it takes another 1 ms to come back. On 24/03/2012, at 2:38 PM, Ron Frazier (NTP) wrote: > I now have the PPS circuit working on the Sure board. I have not = soldered it yet. I just taped a jumper wire between the PPS test point = at the edge of the board and the DCD pin 1 on the RS-232 port. The = serial data is coming in through the Trendnet TU-S9 serial - USB = converter, which is passing DCD. I'm getting + .5 / - 1.5 ms offsets. = The PPS is nowhere to be seen on the statistics screen, but it is = obviously working. I don't know why it's not more centered around zero, = and maybe that will change. However, my total peak to peak range of = offset variance is 2 ms, and that's coming through USB. If I can = maintain that level of accuracy, and it's consistent with UTC, then I'm = very happy. That's plenty good for my purposes. I still may try to run = it through a real serial port on another machine just for kicks. >=20 > Sincerely, >=20 > Ron >=20 >=20 > --=20 >=20 > (PS - If you email me and don't get a quick response, don't be = concerned. > I get about 300 emails per day from alternate energy mailing lists and > such. I don't always see new messages very quickly. If you need a > reply and have not heard from me in 1 - 2 weeks, send your message = again.) >=20 > Ron Frazier > timekeepingdude AT c3energy.com >=20 > _______________________________________________ > Thumbgps-devel mailing list > Thumbgps-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/thumbgps-devel --Apple-Mail=_4AFBB2BE-91B6-4230-8A00-C4099249E409 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIFLjCCBSow ggQSoAMCAQICEQDMQ2ZKvgsUYA5oQg5SjWfVMA0GCSqGSIb3DQEBBQUAMIGTMQswCQYDVQQGEwJH QjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYDVQQK ExFDT01PRE8gQ0EgTGltaXRlZDE5MDcGA1UEAxMwQ09NT0RPIENsaWVudCBBdXRoZW50aWNhdGlv biBhbmQgU2VjdXJlIEVtYWlsIENBMB4XDTExMTAwMTAwMDAwMFoXDTEyMDkzMDIzNTk1OVowJTEj MCEGCSqGSIb3DQEJARYUYW5kcmV3bWNnckBnbWFpbC5jb20wggEiMA0GCSqGSIb3DQEBAQUAA4IB DwAwggEKAoIBAQC+buTRxzSXTQmMyUqaokLJit3xU5WVudxHijhKbGRSTgJ867L/v8+rNhSoFwCV MdKIu/M7apWgGkkA+MT/LjDFj63jLT+4nTTLIojXZdoezbpp/rQ2ViSbi54AjhZBQ5X+yH2xcXmG KpDhZjeZC1bvKNvBtdOHCAcrx1Ys1BNj+AhwridEX/KD0cq5xSsJhjDggF6XSUOsaiqBHR6fiQMi 7gH8EuFBh83oklb/pdreg1fQ7gKJk/Me/atIbE1gtbIR88oaCtXoHfZxgkFwagwMtBHdkxN+wcZy 9xx78el9Lxrjx2nMq50hRlj/bqg/m4rSox7//DKfx7bfKNZAiSMDAgMBAAGjggHkMIIB4DAfBgNV HSMEGDAWgBR6E04AdFvGeGNkJ8Ev4qBbvHnFezAdBgNVHQ4EFgQUXOXqNkq6sNbrD8B41dPko8Gs JucwDgYDVR0PAQH/BAQDAgWgMAwGA1UdEwEB/wQCMAAwIAYDVR0lBBkwFwYIKwYBBQUHAwQGCysG AQQBsjEBAwUCMBEGCWCGSAGG+EIBAQQEAwIFIDBGBgNVHSAEPzA9MDsGDCsGAQQBsjEBAgEBATAr MCkGCCsGAQUFBwIBFh1odHRwczovL3NlY3VyZS5jb21vZG8ubmV0L0NQUzBXBgNVHR8EUDBOMEyg SqBIhkZodHRwOi8vY3JsLmNvbW9kb2NhLmNvbS9DT01PRE9DbGllbnRBdXRoZW50aWNhdGlvbmFu ZFNlY3VyZUVtYWlsQ0EuY3JsMIGIBggrBgEFBQcBAQR8MHowUgYIKwYBBQUHMAKGRmh0dHA6Ly9j cnQuY29tb2RvY2EuY29tL0NPTU9ET0NsaWVudEF1dGhlbnRpY2F0aW9uYW5kU2VjdXJlRW1haWxD QS5jcnQwJAYIKwYBBQUHMAGGGGh0dHA6Ly9vY3NwLmNvbW9kb2NhLmNvbTAfBgNVHREEGDAWgRRh bmRyZXdtY2dyQGdtYWlsLmNvbTANBgkqhkiG9w0BAQUFAAOCAQEAgmf81vnsAnbcmIAyyqvEKxAK jRHerfreN10DK1ISkUJ//U4uffQV8sAGDtyIErzVFsW6NYRmFCMSE20M1ffbFpWUmXCtm/YTlkf1 5STVjTMNshDzMDhpjx99Z2J5RBJPZpXjwmpQnfKwB7zft9TcUSIb9FvZm33EKdF/XlS12U4Q9fsj 2shZf88RituX2+fCWfHoTWiFEhFUkLRtWf1YpgHpEXr82nqROxs/aWNlqtLnwTTu2ULr/WpUaRDs kom8gFZkMgw5kRfLpSXRrCFSORsZzkH2ooRxaJY7wMwZaCUS1am9DuwVy7gehoc3ZsjsDkMObZeu kx7Cg7GxIkgo+zGCA64wggOqAgEBMIGpMIGTMQswCQYDVQQGEwJHQjEbMBkGA1UECBMSR3JlYXRl ciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYDVQQKExFDT01PRE8gQ0EgTGltaXRl ZDE5MDcGA1UEAxMwQ09NT0RPIENsaWVudCBBdXRoZW50aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWls IENBAhEAzENmSr4LFGAOaEIOUo1n1TAJBgUrDgMCGgUAoIIB2TAYBgkqhkiG9w0BCQMxCwYJKoZI hvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0xMjAzMjQwODIxMDlaMCMGCSqGSIb3DQEJBDEWBBQeadK3 ty3Fk9OrLLyJEv5M9EgTozCBugYJKwYBBAGCNxAEMYGsMIGpMIGTMQswCQYDVQQGEwJHQjEbMBkG A1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRowGAYDVQQKExFDT01P RE8gQ0EgTGltaXRlZDE5MDcGA1UEAxMwQ09NT0RPIENsaWVudCBBdXRoZW50aWNhdGlvbiBhbmQg U2VjdXJlIEVtYWlsIENBAhEAzENmSr4LFGAOaEIOUo1n1TCBvAYLKoZIhvcNAQkQAgsxgayggakw gZMxCzAJBgNVBAYTAkdCMRswGQYDVQQIExJHcmVhdGVyIE1hbmNoZXN0ZXIxEDAOBgNVBAcTB1Nh bGZvcmQxGjAYBgNVBAoTEUNPTU9ETyBDQSBMaW1pdGVkMTkwNwYDVQQDEzBDT01PRE8gQ2xpZW50 IEF1dGhlbnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0ECEQDMQ2ZKvgsUYA5oQg5SjWfVMA0G CSqGSIb3DQEBAQUABIIBAAaJ4lFdrMV3LYWPgTN3gs8AVvmZSvRxsIwtgumx9MAKvBmF0FI7jHMp QRdgUB6YRQT+MXZwCsKpkVALaaidvGcGI4pRXMLMOfLwxSxR806/oslKTEUunjnClP9EMsNna5IP uUaPSp9AfbIsJBFSAAjUhOkVVcouVBYrmid/bqTwGByXbADnLrXZr27e+wLQEB92AUE6crUviwwx BHYwMmTtXxtvstbZG39NYEN+clt7YaaN9+OGoMOD9akCDbyJnccPl7a/eQ1RYeauXRxSa2UUpgDb pE87TjBECvmxXlpm61np73sCMPLG1o00CZd78xmccFblL0hbpeoyCUsLW2cAAAAAAAA= --Apple-Mail=_4AFBB2BE-91B6-4230-8A00-C4099249E409--