VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BA053B Observer: J. Attridge Project type: VLBA Obs filename: ba053bcrd.* Date/Day: 2002DEC31/365 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. *SC ACU sending false antenna position erro messages 10325 which causes some good data to be flagged as bad. VCLOCK and GPS Delta check ok. 0834 Begin at all sites except MK. 0834-1834 *BR File has 3mm scans, but there is no 3mm receiver SCH 50 300 at BR. 0834 *BR WEA: Snowing. Snow in the dish. 0834-1834 %BR Header Control Module #1 Error. HC1 FIFO Error, a 10443 and Backplane 1PPS Marker Detected checker messages. Cleared with formatter reset, but returns at scan change. Recorder group has indicated that data is ok unless there are FIFO empty messages. This has not occurred, so data should be ok. 0834-1834 %MK weather station no air temperature or dew 10480 100 600 point information in monitor data. Pointing equation could be adversely affected. 0841 *FD Bad readback on drive 2, track 33. All others ok. 0959 *SC Bad readbacks on drive 2, tracks 27-31. 1054 MK Begin file. 1358 All readbacks ok. 1400 *HN Web cam shows dish about half covered with snow. 1435 PT WEA: Mostly clear, dry. 1445 New operator is Jim OGle. 1451 *HN reports overcast skies, light rain/sleet. 1504 LA reports clear skies. 1524 *SC bad readbacks on tracks 27 and 29. Other sites okay. 1540-1545 *OV rotation drive fault. FRM 100 5 1550 *BR reports low clouds and overcast conditions. 2" of snow covering about 50% of dish. 1601 *OV reports overcast skies, light rain. Snow possible later in the day. 1605 End at SC. 1632 End at HN. 1742 Readbacks okay. 1755 End at NL. 1808-1812 *KP FRM about a millimeter off in focus. Motor FRM 100 4 overspeed fault. 1834 End. 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 = TP/SP x Tcal/2