VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BN021AG Observer: Nagar, N. Project type: VLBA Obs filename: bn021agcrd.* Date/Day: 2004APR28/119 Ants Scheduled: 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: -0.46 0945 File begins. 0945-1024 *BR ACU electrical problems. Site Tech(Sandy) 13902 100 39 is working on it. 1024-1216 %BR The SYNCHRO and ENCODER values are different, with readings varying by as much as 4.5 degrees. Data may be okay. 1021 Readbacks are okay. 1049 Readbacks are okay. 1127-1216 *SC AZ #1 low lubrication pressure. Stowed. 13903 100 49 1216 End. Downtime Summary: Total downtime : 88 min Percentage downtime of observing: 5.8% Average downtime per hour : 3.5 min Total scheduled observing time (# Antennas): 1510 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.