VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120ET Observer: Chatterjee, S. Project type: VLBA Obs filename: bc120etcrd.* Date/Day: 2004JUL23/205 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 1535 Begin file VCLOCK check ok. SC at -0.150 UT1-UTC check ok (-0.46) GPS delta < 10 us Operator: T. Perreault 1535 Observation did not start up at the following sites: HN, NL, FD, LA, PT. Sent a reboot to the station computer. Observing started at HN, FD, and LA following reboot. Observing did not start up at NL or PT. Please see following entries for each site. 1535-1540 *NL not observing following a reboot command. Called SW 100 5 site techs, had them do a physical reboot of the station computer. Observation began following this reboot. 1535-1541 *PT not observing following a reboot command. SW 100 6 Site tech called operations and reported that the terminal screen was hung. Asked for permission to do a reboot, told him to go ahead. Observing started up following this reboot. 1736 End. Downtime Summary: Total downtime : 11 min Percentage downtime of observing: 0.9% Average downtime per hour : 0.5 min Total scheduled observing time (# Antennas): 1210 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.