VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120DI Observer: Chatterjee, S. Project type: VLBA Obs filename: bc120dicrd.* Date/Day: 2004JAN31/031 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 2300 Begin file VCLOCK check ok. KP at -0.516 (ping 1.27 seconds) UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 2300-2320 *HN TSMPLOTs show high system temperature for INT 13 2 channel 5 (1593.99 MHz RCP). Suspect RFI. 2300-0101 *LA TSMPLOTs show "ratty" system temperatures INT 25 30 on channels 7 & 8 (1638.99 MHz RCP (CH7) LCP (CH8)) Suspect RFI 2303 LA wea: overcast, snow squalls in area 0000 Date is 2004FEB01/032. 0010-0020 *KP TSMPLOTs show system temperature spike INT 13 1 on channel 5 (1593.99 MHz RCP). Suspect RFI. 0015-0025 *LA TSMPLOTs show system temperature spike INT 13 1 on channel 5 (1593.99 MHz RCP). Suspect RFI. 0020-0030 *NL TSMPLOTs show system temperature spike INT 13 1 on channel 5 (1593.99 MHz RCP). Suspect RFI. 0101 End. Downtime Summary: Total downtime : 35 min Percentage downtime of observing: 2.9% Average downtime per hour : 1.7 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.