VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120CZ Observer: Chatterjee, S. Project type: VLBA Obs filename: bc120czcrd.* Date/Day: 2004JAN04/004 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 2216 Begin file VCLOCK check ok. BR at -0.513 (ping 1.313 seconds) UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 2216 Webcam weather: SC, FD, OV, BR: clear NL: overcast LA, PT, KP: partly cloudy MK: overcast, foggy, wet HN: dark 2300 FD CHECKER reported a FIRE ALARM TROUBLE message. Antenna is still pointing, there is no loss of power (as would happen with a real fire alarm). Suspect that there was a slight power glitch that made it through the system. 2310-2330 *MK TSMPLOTs show a system temperature INT 25 5 "spike" at this time on channels 7 & 8. Freq.: 1683.99 MHz, RCP and LCP. Suspect RFI. 2345 PT dial backup modem was making a beeping sound (long beep every second). Attempted to dial into the site via the modem, got a fast busy signal. Did a traceroute to the site, still on Internet. 0000 Date is 2004JAN05/005. 0017 End. Downtime Summary: Total downtime : 5 min Percentage downtime of observing: 0.4% Average downtime per hour : 0.2 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.