VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120BL Observer: Chatterjee, S. Project type: VLBA Obs filename: bc120blcrd.* Date/Day: 2003SEP07/250 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 0408 Begin file VCLOCK check ok. MK at -0.500 (ping 1.269 seconds) UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 0408-0610 *BR BBC1 total power and switched power are low 12331 13 15 BBC1 is written up on STATUS.ANT as being "broken" but there are no details. The maintenance form for this has not been processed yet, so I am going to assume that the low total power & switched power are what the BBC was written up for. System temperature for BBC1 are 5x the other BBCs. 0610 End. Downtime Summary: Total downtime : 15 min Percentage downtime of observing: 1.2% Average downtime per hour : 0.7 min Total scheduled observing time (# Antennas): 1220 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.