VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BT067 Observer: S. H. Teng Project type: VLBA Obs filename: bt067crd.* Date/Day: 2003FEB09/040 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK and GPS Delta check ok. 0427 Begin at all stations. 0430-0431 *HN EL #2 armature overcurrent. 10773 100 1 Error corrected by disabling the EL axis for a couple seconds. 0432-0433 *HN EL #2 armature overcurrent. 10773 100 1 0436-0437 *HN EL #2 armature overcurrent. 10773 100 1 0439-1428 *HN EL #2 armature overcurrent. These will 10773 5 29 occur at all scan changes where the EL is increasing They will be corrected as they occur, but any data flagged bad due to this is actually good, since the antenna will track correctly on one EL motor. 0442 All readbacks ok. 0504 %FD Bad readbacks on drive 1, tracks 5 and 29. All others ok. 0610 %FD Bad readback on drive 1, track 3. All others ok. 0835 All readbacks ok. 0940 HN There have been 57 EL #2 armature overcurrent errors so far. All corrected quickly. 1009 All readbacks ok. 1110 %FD Bad readbacks on drive 1, tracks 9,25,32. All others ok. 1217 %FD Bad readback on drive 1, track 9. All others ok. 1343 %FD Bad readbacks on drive 1, tracks 4,5,32. All others ok. 1417 SC End of file. 1427 HN There were 100 EL #2 armature overcurrent errors during this project. All were corrected quickly. The exact times of occurance are attached. 1428 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