VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BN021AE Observer: N. Nagar Project type: VLBA Obs filename: bn021aecrd.* Date/Day: 2003DEC24/358 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. VCLOCK and gps delta check okay. %Overcast conditions at HN. *Freezing rain/snow at BR, dish likely to be icy. WEA Tsys values will be higher than normal. 1801 Begin. 1836-1853 *KP EL#2 armature overcurrent fault, antenna not ACU 100 17 tracking source properly. Disabled EL axis to clear error then re-enabled it to resume tracking source. 1837 Readbacks okay. 1905 Readbacks okay. 1942 %Raining at HN. 2015-2033 *FD ran out of tape earlier than expected. TAPE 100 18 Project will be over before a site tech could reach the site to mount new tape. 2033 End. Downtime Summary: Total downtime : 35 min Percentage downtime of observing: 2.3% Average downtime per hour : 1.4 min Total scheduled observing time (# Antennas): 1520 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.