VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL122A Observer: Lanyi, G.E. Project type: VLBA Obs filename: bl122acrd.* Date/Day: 2004DEC14/349 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operators are Sonja Mendoza and Paul Dyer. %WEA: Gusty winds at MK. Vclock, GPS delta, and time checks okay at all sites PT writing on Mark5 disc NRAO-036. LA writing on Mark5 disc NRAO-023. 0602 Begin at all sites. 0602-0609 *MK Tape did not start writing on Recorder 2. REC 100 7 *MK Station computer rebooted. This fixed the problem. 0602-0641 *LA Mark5 disc unit did not start up. REC 100 39 Rebooted Mark5 and station computers. This fixed the problem. 0611 Readbacks okay at all sites. 0623 Readbacks okay at all sites. 0650 %MK: bad readback track 02, drive 2. All other readbacks OK. 0650 New operator is Brian Willard. 0654 All readbacks OK. 0702 WEA: Occasional rain BR. 0707-1636 PT removed from observing for PT-VLA SCH observing projects AJ314B and AH855 0707 %MK: bad readback track 05, drive 2. All other readbacks OK. 0717 All readbacks OK. 0733 %KP: bad readbacks tracks 23 and 25, drive 1. All other readbacks OK. 0740 All readbacks OK. 0800-0900 Readbacks this hour ok at all sites 0900-1000 Readbacks this hour ok at all sites 1000-1100 Readbacks this hour ok at all sites 1020 %MK: occasional high winds. 1057 WEA: broken clouds SC. 1100-1200 Readbacks this hour ok at all sites 1200 WEA: broken clouds HN. 1200-1300 Readbacks this hour ok at all sites except: FD bad readback drive 1 track 5 @ 1256 UT BR bad readback drive 2 track 13 at 1256 UT 1300-1400 Readbacks this hour ok at all sites except: BR bad readback drive 2 track 13 @ 1305, 1313, 1320 and at 1324, 1328, 1337, 1350 UT 1313 WEA: clear NL. 1324 WEA: clear FD. 1336-0602 %SC sporadic high system temperatures on channels INT 10 98 1 through 4 (freq: 1: 23724.49 MHz, 2: 23737.49 MHz 3: 23776.49 MHz, 4: 23854.49 MHz). Suspect some form of K band RFI (military?). 1348 WEA: high thin clouds LA. 1400-1500 Readbacks this hour ok at all sites except: MK bad readback drive 1 track 25 @ 1417 UT OV bad readback drive 2 track 5 @ 1442 UT 1419 WEA: clear KP. 1419 WEA: light rain SC. 1430 New operator: T. Perreault 1432 NL tech called, he will be on call from home. Other site tech's car broke down enroute to site. 1451 KP wea: clear, no precipitation 1500-1600 Readbacks this hour ok at all sites except: OV bad readback drive 2 track 5 @ 1513 1502 LA wea: clear, no precipitation 1524 BR wea: low overcast, little light snow 1600-1700 Readbacks this hour ok at all sites except: OV bad readback drive 2 track 5 @ 1621, 1628 UT OV bad readback drive 2 tracks 5, 32 @ 1614 UT 1600 OV wea: clear, no precipitation 1636 PT returns to observing BL122A 1638-1653 *SC AZ #2 armature/electronic circuit breaker fault ACU 100 15 condition. Contacted site tech - reported two blown AZ fuses. Has taken antenna to replace fuses. 1700-1800 Readback checks this hour ok at all sites 1800-1900 Readback checks this hour ok at all sites except: FD bad readback drive 1 track 15 @ 1816 UT FD bad readback drive 1 tracks 14,15,16 @ 1821 UT 1900-2000 Readback checks this hour ok at all sites except: OV bad readback drive 2 track 5 @ 1907 UT 1919 MK wea: clear, no precipitation 2000-2100 Readback checks this hour ok at all sites 2100-2200 Readback checks this hour ok at all sites except: FD bad readback drive 1 track 15 @ 2139 UT 2128 KP wea: clear, no precipitation 2154 BR got a message on VLCL of: doComent(): unrecognized type=0 text=tReadback: MCB no interface response There was no readback check for this site at this time. There are no CHECKER errors. 2200-2300 Readback checs this hour ok at all sites except: FD bad readback drive 1 track 15 @ 2209 UT BR bad readback drive 2 tracks 2, 4 @ 2209 UT FD bad readback drive 1 track 15 @ 2214 UT OV bad readback drive 2 track 5 @ 2236 UT 2332 OV wea: Clear, no precipitation. 2300-0000 Readback checks this hour ok at all sites. 0000 Date is 2004DEC15/350. 0000-0100 Readback checks this hour ok at all sites except ; FD bad readback drive 1 track 15 @ 0011 UT FD bad readback drive 1, track 14,15,16 @ 0037 UT 0142 #SC Seeing strong and intermittant RFI across all channels. Downtime already estimated (see entry above). 0146 %SC wea: Precipitation starting. 0100-0200 Readback checks this hour ok at all sites except: OV bad readback drive 2 track 5 @ 0119 UT 0200-0300 Readback checks this hour ok at all sites. 0300-0400 Readback checks this hour ok at all sites except ; FD bad readback drive 1 track 14,15 @ 0333 UT FD bad readback drive 1 track 14,15,16 @ 0342 UT FD bad readback drive 1 track 14,15,16 @ 0349 UT FD bad readback drive 1 track 14 @ 0355 UT 0400-0500 Readback checks this hour ok at all sites except ; OV bad readback drive 2 track 5 @ 0406 UT OV bad readback drive 2 track 5 @ 0424 UT 0500-0600 Readback checks this hour ok at all sites except ; FD bad readback drive 1 track 5 @ 0521 UT 15396 OV bad readback drive 2 track 5 @ 0548 UT 0602 End. Downtime Summary: Total downtime : 159 min Percentage downtime of observing: 1.1% Average downtime per hour : 0.7 min Total scheduled observing time (# Antennas): 14400 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.