From Herb Mon Apr 26 09:22:13 1999 From: Herb (Herb) Date: Mon, 26 Apr 1999 9:22:13 PDT Subject: [IGSMAIL-2247] Follow up to IGSMail # 2243 Message-ID: IGS Electronic Mail Mon Apr 26 9:22:13 PDT 1999 Message Number 2247 ****************************************************************************** Author: Herb Dragert Subject: Follow up to IGSMail # 2243: TurboRogue offload problems . As a follow up on the offload problems we experienced with all of our TurboRogue and BenchMark receivers, we provide the following information: 1. All receivers reported "No Data Found" for any data request which fell into a timeframe after 13:00:30UT , Apr. 25. 2. All receivers were tracking and collecting data continuously after the above time; a check of the flashcard in "menu mode" found data present to current time with no gaps. Note that stations with TurboRogue receivers in "continuous streaming" mode (e.g. ALBH) suffered no data loss. 3. A "readfc -b" command on each receiver showed the identical symptom: The active block on the flashcard being incremented with current data had a Start Time of 1007/2/22:51:54 (bogus, because we haven't reached this date yet) and a Stop Time that was identical. Furthermore, as the blocksize of the current block was visibly increasing, the Stop Time remained fixed as opposed to incrementing as it should with added data. After several failed attempts to offload the data from the badly indexed block, we carried out a flashcard erase at every site. This removed the offending time-stamp from the flashcards and returned data collection to normal. Unfortunately, it means that we will have permanent data gaps from 13:00UT, Apr. 25, 1999, to about 07:30 UT, Apr. 26, 1999, at all of our sites: ALBX, DRAO, WILL, WHIT, FLIN, DUBO, UCLU, NANO, WSLR, and CHWK. We apologize for this possibly rash action, but it was carried out in an attempt to minimize further data loss from these sites. The truncated data files for Day 115 for the above sites will be posted shortly at CDDIS. Herb Dragert Pacific Geoscience Centre dragert at pgc.nrcan.gc.ca ++++++++++++++++++++++++++++++++++++++++++++++++++ Herb Dragert Office: (250) 363-6447 Pacific Geoscience Centre Fax: (250) 363-6565 9860 West Saanich Road Email: dragert at pgc.nrcan.gc.ca Sidney, B.C. V8L 4B2 WEB Page: http://www.pgc.nrcan.gc.ca Canada ++++++++++++++++++++++++++++++++++++++++++++++++++ [Mailed From: Herb Dragert ]