VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BM256C Observer: Marscer, A. Project type: VLBA Obs filename: bm256ccrd.* Date/Day: 2007AUG06/218 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Padilla GPS delta, UT1-UTC, and VClock checks are all ok. 1014 Begin 1014-1015 *PT HC1 FIFO error. Cleared. FMTR 100 1 1027 *KP raining. 1053 *SC raining. 1059-1100 *LA Communication with Mark5 lost temporaily. REC 100 1 1324-1328 *OV Formatter 68010 Error. Cleared. FMTR 100 4 1348 New operator is Betty Ragan. 1353 LA reports dry weather, scattered clouds. 1404-1405 *MK focus drive fault. FRM 100 1 1421 BR reports a few high, thin, scattered clouds. Dish is dry. 1424-1425 *MK focus drive fault. FRM 100 1 1426 *PT raining. 1434-1435 *MK focus drive fault. FRM 100 1 1455-1456 *MK focus drive fault. FRM 100 1 1507 OV reports clear, dry weather. 1533 KP reports overcast, fog, moderate rain, wet dish. 1542 *HN raining. 1540-1543 *MK focus drive fault. FRM 100 3 1625-1627 *MK focus drive fault. FRM 100 2 1640-1642 *MK focus drive fault. FRM 100 2 1650-1655 *MK focus drive fault. FRM 100 5 1801-1802 *MK focus motor foldback error. FRM 100 1 1817-1818 *PT not in point. Probably a power glitch. COM 100 1 1842-1844 *PT autostowed again. WEA 100 2 1918-1920 *PT autostowed again. WEA 100 2 1931 MK reports clear weather. 1931-1946 *LA got AZ#2 aramture/electronics CB error. ACU 100 15 Putting it into standby did not clear. Site tech is working on it. 1939-1943 *KP not in point. Probably a power glitch. COM 100 4 1946-1947 *PT autostowed again. ACU 100 1 1954-1956 *PT autostowed again. WEA 100 2 1957-1959 *PT is out again. WEA 100 2 2000-2010 *PT autostowed again. There are bad storms in the WEA 100 10 area. Going to let it sit out for a few minutes before I try pointing it again. 2010-2308 *PT will not stay in point. It doesn't even get WEA 100 178 onto source before it stows again now. Taking out of the observation until the storm dies down. 2010-2014 *MK focus drive fault. FRM 100 4 2024 FD reports thunderstorms in the area. 2106 %KP weather: overcast low clouds, fog, wet. 2145 New operator: T. Perreault 2244 OV wea: clear, no precipitation 0000 Date is 2007AUG07/219. 0045-1015 *SC FRM power supply problems. 21002 100 570 Various power supply readbacks (-15V, +15V, +5V and system digital ground) are way out of range. The FRM is essentially locked up in Focus 1st Upper Limit, Focus Drive lockout, and Rotation Drive lockout. On the SUBREFLECTOR VOLTAGES screen, the above readbacks are varying wildly. Will wait to see if power issues settle down. 0115 &SC - FRM is still acting up. Contacted oncall 21002 site tech, he will go out to the site. 0147 *SC tech on site. Antenna parked. 21002 0242 *SC removed from observing. Dead FRM power supply, 21002 no spares available. 0541 New operator is Jim Ogle. 0546 *Raining at PT. 0811 *Raining at NL. 1015 End. Downtime Summary: Total downtime : 814 min Percentage downtime of observing: 5.6% Average downtime per hour : 3.4 min Total scheduled observing time (# Antennas): 14410 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.