VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL137L Observer: Lister, M. Project type: VLBA Obs filename: bl137lcrd.* Date/Day: 2006DEC01/335 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operators: Paul Padilla and Heidi Gerhardt GPS delta < 10 us (LA at -7.4 us) UT1-UTC check ok (all at 0.07) Vclock check ok (SC at -0.142) Recent snow at LA, PT, and BR *PT has occasional Mark5 communication loss 19415 glitches due to a software upgrade still being debugged. 0232 Begin 0232-0224 %OV has low 4cm LCP amplitudes. 19477 20 286 0232-0224 *BR 4cm cryo is warm and not cooling 19486 40 572 0255-0256 *PT Mark5 communications error. 19415 100 1 0337-0338 *PT Mark5 communications error. 19415 100 1 0341-0342 *PT Mark5 communications error. 19415 100 1 0350-0352 *PT Mark5 communications error. 19415 100 2 0354-0355 *PT Mark5 communications error. 19415 100 1 0507-0510 *PT Mark5 communications error. 19415 100 3 0555-0556 *PT Mark5 communications error. 19415 100 1 0556-0640 *SC stopped recording, claimed full disk pack 19497 100 44 &called out site tech 0606-0607 *PT Mark5 communications error. 19415 100 1 0631-0632 *PT Mark5 communications error. 19415 100 1 0642 New operator is Jim Ogle. 0649-0650 *PT Mark5 communications error. 19415 100 1 0708-0709 *PT Mark5 communications error. 19415 100 1 0725-0726 *PT autostowed, power glitch? Repointed. COM 100 1 0728-0729 *HN rotation position error. FRM 100 1 0812-0813 *NL rotation position error. FRM 100 1 0815-0224 *LA 2cm cryo running a bit warm on the 15K stage 19500 60 653 (32K), system temperatures may be elevated. 0818-0819 *PT Mark5 communications error. 19415 100 1 0849 *LA 2cm continues to warm up. Site tech contacted, 19500 he says the symptoms suggest a bad coldhead and they don't have any spares on site so there's nothing he can do to fix it. 0929-0930 *PT Mark5 communications error. 19415 100 1 0940-0941 *NL rotation position error. FRM 100 1 0947-0948 *PT Mark5 communications error. 19415 100 1 1001-1002 *PT Mark5 communications error. 19415 100 1 1006-1007 *SC autostowed, commerical power glitch. Repointed. COM 100 1 1018-1019 *PT Mark5 communications error. 19415 100 1 1045-1046 *NL rotation position error. FRM 100 1 1055-1056 *PT Mark5 communications error. 19415 100 1 1105-1107 *NL rotation position error. FRM 100 2 1133-1136 *SC rotation motion analysis fault. FRM 100 3 1150-1151 *PT Mark5 communications error. 19415 100 1 1154-1155 *PT Mark5 communications error. 19415 100 1 1217-1218 *NL rotation position error. FRM 100 1 1234-1235 *PT Mark5 communications error. 19415 100 1 1255-1256 *PT Mark5 communications error. 19415 100 1 1301 *Raining at MK. 1339 FD reports scattered stratus clouds. 1418-1419 *SC rotation motion analysis fault. FRM 100 1 1426-1428 *SC rotation motion analysis fault. FRM 100 2 1428-1429 *PT Mark5 communications error. 19415 100 1 1440-1441 *PT Mark5 communications error. 19415 100 1 1445 Operator is A. Sowinski. 1448-1449 *PT Mark5 communications error. 19415 100 1 1512 LA reports clear & dry, maybe some snow still in dish 1523-1538 *LA Site tech taking antenna to examine 2cm cryo. 19500 100 15 1525 KP reports clear and dry. 1540 BR wea: low overcast, dish has clumps of snow covering 15% of surface 1848-1936 *BR Removing from observation for work on 4cm cryo. 19486 100 48 1852-1854 *FD Mark5 problem while switching recording to 100 2 bank A. Now recording on new pack in bank B. 1924 *Raining at HN. 1932-1933 *PT Mark5 communications lost error. 19415 100 1 2011-2013 *PT Out of point, repointed. ACU 100 2 2023-2025 *PT Out of point, repointed. ACU 100 2 2040-2046 *PT autostowed. Power glitch. Repointed. COM 100 6 2043 PT Formatter errors FMTR Header control module 2 error HC2 FIFO error Backplane 1PPS marker detected FIFO 3 1PPS detected FIFO 2 1PPS detected FIFO 1 1PPS detected Cleared error 2047-2054 *PT autostowed. Power glitch. Repointed COM 100 7 2052-2101 *LA not observing. Site tech has taken antenna FE 100 9 to work on 2cm reciever. 2101-2103 *LA site tech rebooting VME, terminal port at site HWC 100 2 is hung. 2125-2126 *PT Mark5 communications lost error. 19415 100 1 2128-2129 *PT Mark5 communications lost error. 19415 100 1 2200-2201 *PT Mark5 communications lost error. 19415 100 1 2214-2215 *PT Mark5 communications lost error. 19415 100 1 2220-2221 *PT Mark5 communications lost error. 19415 100 1 2226-2232 *PT autostowed. Power glitch. Repointed. COM 100 6 2243-2244 PT Mark5 communications lost error. 19415 100 1 2243-2247 *PT autostowed. Power glitch. Repointed. COM 100 4 2245 New operator: Heidi Gerhardt and Paul Padilla 2251-2253 *PT autostowed. Power glitch. Repointed. COM 100 2 2255-2256 *PT Mark5 communications lost error. 19415 100 1 2306-2307 *PT Mark5 communications lost error. 19415 100 1 2326-2328 *PT Mark5 communications lost error. 19415 100 2 2334-2335 *PT Mark5 communications lost error. 19415 100 1 0000 Date is 2006DEC02/336. 0036-0037 *SC Brief Rotation error. FRM 100 1 0051-0053 *HN autostowed in wind gust. Repointed. WEA 100 2 0214-0215 *PT Mark5 communications lost error. 19415 100 1 0222-0224 *SC Brief Rotation error. FRM 100 2 0224 End. Downtime Summary: Total downtime : 1720 min Percentage downtime of observing: 12.0% Average downtime per hour : 7.2 min Total scheduled observing time (# Antennas): 14320 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.