VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL111J Observer: Lister, M. Project type: VLBA Obs filename: bl111jcrd.* Date/Day: 2003AUG28/240 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Dave Pierce. VCLOCK and GPS Delta check okay. UT1-UTC: -0.35 1003 File begins at all sites. 1003-1003 *LA Low switch power on all BBC's. Affecting data. 12266 100 1440 1059 All readback checks past hour ok at all sites 1118 %SC Precipitation starting. 1146 SC WEA: Broken low clouds, dish is wet. 1153-1203 *SC Needed to manually begin the pump on 1cm. CRYO 100 10 Beginning cool down cycle. 1159 All readback checks past hour ok at all sites 1259 All readback checks past hour ok at all sites 1316-1323 *PT Could not achieve command position on EL. ACU 100 7 Reset on scan change. 1334 HN WEA: Clear, no precipitation. 1344 All readbacks are okay. 1345 New operator Cyrus M Reed. 1359 All readback checks past hour ok at all sites 1459 All readback checks past hour ok at all sites 1530 WEA: SC,NL,OV,BR,MK Clear skies. WEA: HN Light haze. KP High overcast. WEA: FD,LA,PT Partly cloudy. (40%,80%,10%) WEA: No recent precipitation at any site. 1559 All readback checks past hour ok at all sites 1659 All readbacks checks past hour ok at all sites 1744-1747 *KP autostowed due to power glitch. Repointed. COM 100 3 1759 All readback checks past hour ok at all sites 1830-1831 *KP autostowed due to power outage. Low, dark clouds COM 100 1 are moving into the area. 1856 *KP FRM errors for rotation motor from last power FRM glitch. Did master clear and re-read of current scan to clear. 1859 All readback checks past hour ok at all sites 1902 %KP EL motor current sum > 20amps. Looking a bit odd ACU in SCREENS too. 1917-1920 *KP site tech is going to reset the ACU - the EL ACU 100 3 motor currents are still off. 1930 %KP site tech reports that the EL motor current issues appear to be a readback/sensor problem only. 1959 All readback checks past hour ok at all sites 2023-2106 *KP techs are working on EL readback problems. ACU 100 43 (Current alignment) 2059 All readback checks past hour ok at all sites 2125 New operator: T. Perreault 2142-2145 *PT autostowed. Power glitch. Repointed. COM 100 3 2159 All readback checks past hour ok at all sites 2223-2229 *PT autostowed. Power glitch. Repointed. COM 100 6 2225 PT wea: site tech reports thunderstorms "popping up here & there" 2229-2230 *PT autostowed. Site tech repointed. COM 100 1 2252-2257 *SC loss of commercial power. Repointed antenna. COM 100 5 Commercial power restored. 2256-2301 *PT autostowed. Power glitch. Repointed. COM 100 5 2259 All readback checks past hour ok at all sites 2311-2320 *PT autostowed. Power glitch. Repointed. COM 100 9 2352-2355 *PT autostowed. Power glitch. Repointed. COM 100 3 2359 All readback checks past hour ok at all sites 0000 Date is 2003AUG29/241. 0021-0024 *PT autostowed. Power glitch. Repointed. COM 100 3 0027-0030 *PT autostowed. Power glitch. Repointed. COM 100 3 0040-0045 *PT autostowed. Power glitch. Repointed. COM 100 5 0059 All readback checks past hour ok at all sites 0113-0118 *PT autostowed. Power glitch. Repointed. COM 100 5 0159 All readback checks past hour ok at all sites 0236-0237 *KP EL#2 armature overcurrent error condition ACU 100 1 Cleared by momentarily disabling EL axis 0259 All readback checks past hour ok at all sites 0336-0340 *PT autostowed. Power glitch. Repointed. COM 100 4 0359 All readbacks checks past hour ok at all sites 0400-0408 *PT autostowed. Power glitch. Repointed. COM 100 8 0459 All readback checks past hour ok at all sites 0540 New Operator is Dave Pierce. 0545 %LA WEA: Precipitation starting. 0559 All readback checks past hour ok at all sites. 0659 All readback checks past hour ok at all sites. 0710-0714 *FD Autostowed. Power bump. Repointed. COM 100 4 0759 All readback checks past hour ok at all sites. 0802 Readbacks are okay. 0839 Readbacks are okay. 0844-0845 *FD Autostowed. Power bump. Repointed. COM 100 1 0848 %FD Bad readback Drive #1, track 5. All other site readbacks are okay. 0959 All readback checks past hour ok at all sites. 1003 End. Downtime Summary: Total downtime : 1573 min Percentage downtime of observing: 10.9% Average downtime per hour : 6.6 min Total scheduled observing time (# Antennas): 14400 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.