VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL111N Observer: Lister, M. Project type: VLBA Obs filename: bl111ncrd.* Date/Day: 2004AUG09/222 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 0306 Begin file VCLOCK check ok. LA at -0.709 (ping 1.651 seconds) UT1-UTC check ok (-0.46) GPS delta < 10 us Operator: T. Perreault 0306-0259 *MK 2CM LEFT FET#1 voltage out of range. LCP data 14540 50 716 will be affected. 0312-0259 %FD wea: raining; seeing elevated system temperatures 0324-0329 *FD autostowed. Power glitch. Repointed. COM 100 5 0331 Readback check ok 0336-0340 *FD autostowed. Power glitch. Repointed. COM 100 4 Radar weather map shows thunderstorm in the region. 0348 Readback check ok 0403-0411 *FD autostowed. Power glitch. Repointed. COM 100 8 0414-0421 *FD autostowed. Power glitch. Repointed. COM 100 7 0415 *HN bad readback drive 1 track 33 14539 0440 *HN bad readback drive 1 track 33; 14539 all other sites ok 0457 *HN bad readback drive 1 track 33; 14539 all other sites ok 0516 *MK bad readback drive 1 tracks 3,5 0524 Readback check ok 0548 Readback check ok 0556 Readback check ok 0623 MK readback check ok 0639 Readback check ok 0659 Readback check ok 0715 *KP bad readback drive 2 tracks 11,13,15,17; all other sites ok 0742 MK readback check ok 0807 Readback check ok 0831 *FD bad readback drive 1 track 5; all other sites ok 0857 Readback check ok 0924 Readback check ok 0932 Readback check ok 0959-1001 *FD subreflector had a FOCUS brake fault FRM 100 2 condition. Did a MASTER CLEAR reset, re-read observation scan. 1001 Readback check ok 1027 Readback check ok 1019 Readback check ok 1046 Readback check ok 1054 Readback check ok 1121 Readback check ok 1147 Readback check ok 1158 HN wea: clear, no precipitation 1201 SC wea: light scattered low clouds, no precipitation 1212 Readback check ok 1221 Readback check ok 1247 Readback check ok 1248 FD wea: scattered cumulus, no precipitation wet ground 1256 Readback check ok 1308 Readback check ok 1316 Readback check ok 1400 Operator on duty: Phillip Hicks. 1406 Readback check OK. 1408 LA Weather: clear and dry. 1417 Readback check: OK except LA, drive 2, track 4. 1452 BR WEA: Clear skys. Ground and dish are dry. 1507 OV WEA: Clear, none, dry. 1526 Readback check: All OK. 1614 Readback check OK. 1707-1720 *PT Dropped out of pointing. Re-pointed. COM 100 13 1728-1732 *MK Threw xfer switch to help diagnose LCP high tsys 14540 100 4 problem. 1739 Readback check: All OK. 1805 Readback test: All OK. 1823 Readback test: Track 33 on HN recorder #2 bad. Rest OK 1841 Readback check: No problems. 1843-1854 *PT Dropped out of pointing. Repointed. COM 100 11 1849 Readback check: All is well. 1909 Readback check: No problems seen. 1914-1922 *PT Operator accidently stowed antenna. HUERR 100 8 1932 Readback check: OK except NL, REC#2. 1945 MK Weather: clear. 1951 Readback check: no problems. 1959 Readback check: No problems. 2022 Readback test: No problems. 2105 Readback check: All OK. 2113 Readback check: No problems. 2120 SC Per site tech's request, switched to tape drive #2. 2126 KP Weather: High clouds, none, dry. 2133 Readback check: No problems. 2136-2143 *PT Dropped out of pointing. Repointed. COM 100 7 2145 New operator is Jim Ogle. 2202-2204 *PT autostowed. Repointed. COM 100 2 2218 Readbacks okay. 2225 BR bad readbacks on drive #2, all tracks. This is probably not real, site appears to have switched tape drives right before the readbacks so it was unable to do a proper check. 2225-2226 *PT autostowed, repointed. COM 100 1 2227 Readbacks okay. 2245 Readbacks okay. 2300 OV reports clear skies. 2304 Readbacks okay. 2345 Readbacks okay. 2354 Readbacks okay. 0000 Date is 2004AUG10/223. 0014 Readbacks okay. 0049 Readbacks okay. 0107 Readbacks okay. 0135 Readbacks okay. 0143 Readbacks okay. 0151 Readbacks okay. 0233 *OV bad readbacks on track 29, drive #2. Other sites okay. 0242 End at MK. 0250-0252 *KP autostowed, commercial power glitch. Repointed. COM 100 2 0259 End. Downtime Summary: Total downtime : 790 min Percentage downtime of observing: 5.5% Average downtime per hour : 3.3 min Total scheduled observing time (# Antennas): 14330 min (10) Notes: * = Entries where data was affected. % = Entries where data may have been affected. & = Entries where the site tech was called out. WEA = Weather entries. MF# = Maintenance form or major downtime category associated with a problem. %AD = The percentage of an antenna affected by a problem. AMD = Total antenna-minutes downtime for a problem. Tsys = System Temperature (TP/SP x Tcal/2) ACU = Antenna Control Unit FRM = Focus/Rotation Mount RFI = Radio Frequency Interference VME = Site control computer CB = Circuit Breaker vclock = Program that compares site clock time to a standard.