From jbauer at nrao.edu Fri Dec 12 17:39:31 2003 From: jbauer at nrao.edu (Janet Bauer) Date: Fri, 12 Dec 2003 17:39:31 -0500 Subject: [alma_na] Next NA DH Teleconference Message-ID: <001001c3c100$cf64b3f0$bb7521c0@cv.nrao.edu> Everyone, The next ALMA NA DH Teleconference will be on Monday, 15th December beginning at 1:00 pm ET, 1800 UTC Dial in information is below. Dec 15 1 p.m. et 1800 UTC ALMA NA DH Meeting Calendar: multiple cals Audio/Video/Both/Local: Audio (434-295-1363) Details: CVOIC/SOC280/TUCN505 Please let me know if you cannot attend. Have a great weekend! Janet Janet Bauer ALMA Project Secretary NRAO - ALMA North American Project Office 2496 Old Ivy Road, Suite 226 Charlottesville, VA 22903 434.296.0296 (phone) 434.296.0255 (fax) jbauer at nrao.edu (E-mail) -------------- next part -------------- An HTML attachment was scrubbed... URL: From jbauer at nrao.edu Tue Dec 16 11:46:03 2003 From: jbauer at nrao.edu (Janet Bauer) Date: Tue, 16 Dec 2003 11:46:03 -0500 Subject: [alma_na] ALMA Weekly Progress Report for Week Ending 5th December 2003 Message-ID: <000001c3c3f4$17e49a00$bb7521c0@cv.nrao.edu> Janet Bauer ALMA Project Secretary NRAO - ALMA North American Project Office 2496 Old Ivy Road, Suite 226 Charlottesville, VA 22903 434.296.0296 (phone) 434.296.0255 (fax) jbauer at nrao.edu (E-mail) -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: ALMA Weekly Progress Report Week Ending 5th December 2003.txt URL: From jbauer at nrao.edu Tue Dec 16 12:40:53 2003 From: jbauer at nrao.edu (Janet Bauer) Date: Tue, 16 Dec 2003 12:40:53 -0500 Subject: [alma_na] ALMA Weekly Progress Report for the Week Ending 12th December 2003 Message-ID: <000b01c3c3fb$c0d22130$bb7521c0@cv.nrao.edu> Janet Bauer ALMA Project Secretary NRAO - ALMA North American Project Office 2496 Old Ivy Road, Suite 226 Charlottesville, VA 22903 434.296.0296 (phone) 434.296.0255 (fax) jbauer at nrao.edu (E-mail) -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: Weekly Progress Report 12th December.txt URL: From jbauer at nrao.edu Fri Dec 19 15:21:08 2003 From: jbauer at nrao.edu (Janet Bauer) Date: Fri, 19 Dec 2003 15:21:08 -0500 Subject: [alma_na] NA DH Meeting Minutes Message-ID: <000e01c3c66d$a30514e0$bb7521c0@cv.nrao.edu> Everyone, Attached is a pdf version of the NA DH Meeting minutes for the meeting on the 15th December. I will post them to ALMA EDM shortly. Have a terrific holiday season!! Janet Janet Bauer ALMA Project Secretary NRAO - ALMA North American Project Office 2496 Old Ivy Road, Suite 226 Charlottesville, VA 22903 434.296.0296 (phone) 434.296.0255 (fax) jbauer at nrao.edu (E-mail) -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: 15th December 2003.pdf Type: application/pdf Size: 24313 bytes Desc: not available URL: From dsramek at aoc.nrao.edu Wed Dec 31 14:29:20 2003 From: dsramek at aoc.nrao.edu (Dick Sramek) Date: Wed, 31 Dec 2003 12:29:20 -0700 Subject: [alma_na] [Fwd: Time Synchronization In ALMA] Message-ID: <3FF32390.A1B1ED09@aoc.nrao.edu> Dear Friends, FYI here is a new document on ALMA EDM for your inspection, pleasure and delight. Forward as necessary to your group. ..DS.. -------- Original Message -------- Subject: Time Synchronization In ALMA Date: Wed, 24 Dec 2003 14:14:51 -0700 From: "Larry D'Addario" Organization: National Radio Astronomy Observatory To: dsramek at nrao.edu, rmarson at nrao.edu, clangely at nrao.edu, zbarnes at nrao.edu,Marc Torres , rescoffier at nrao.edu CC: bglendenning at nrao.edu, Baudry Alain ,cjanes at nrao.edu Hello all. As requested by Dick, I have prepared a new document describing in more detail than before the methods and design rules for achieving the necessary synchronization in timing among the widely distributed devices in the ALMA telescope. It can be found on ALMAEDM under /IPTs/ System Engineering/ Documentation as document number 80.04.00.00-003-A, "Time Synchronization Design Rules." In addition, I have re-written the 'Synchronization' part (sec 4.5) of the System Design Description, document 80.04.00.00-002-B, available in the same folder on ALMAEDM, in the hope of making it more clear. This covers the design at a higher level and in less detail, but it provides some of the background needed for a full understanding of the new document. In the present design, these timing considerations affect the following devices: Correlator, First LO Offset Generator, Second LO Synthesizer, DTS Transmitter, and Digitizer Clock. Also affected are many modules of the control software, including but not limited to drivers for these devices. This is not intended to impose any new requirements or to force any design changes. It is done merely to clarify and provide documentation of things that should already be incorporated into the design. Please forward this message to anyone you think would be interested. Comments and questions on these documents and the points raised in them are welcome. --Larry ============================================================ Larry R. D'Addario Research Engineer National Radio Astronomy Observatory, Tucson, Arizona, USA 949 N Cherry Ave, Campus Bldg 65 7711 E Linden St University of Arizona Tucson, AZ 85715 Tucson, AZ 85721-0655 tel: +1/520/882-8250 x123 +1/520/885-8240 fax: +1/520/882-7955 Email: ldaddario at nrao.edu ============================================================