VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BN020 Observer: N. Nakai Project type: VLBA Obs filename: bn020crd.* Date/Day: 2003JAN05/005 Ants Used: SC HN NL FD LA PT KP OV BR MK Y =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is K. Jakischa. VCLOCK & GPS delta okay. %HN has snow & ice in the dish. %MK has 35+ mph wind gusts. 1845 Begin at Y. 1845-2000 Y's BBC 3 is not locking. Appears to be at right 10513 25 18 frequency, but flags as unlocked. VLA operator swapped BBC 3 & 7(which is not being used), & flagging stopped. 1845 %Y's channel 3 & 4 is at edge of frequency range for site, causing USB switched power to fluctuate. Does not appear to be flagging data, but is likely to be noisy. 1900 Begin at other sites except SC. 1900 Y began writing tape at this time. 1900-0501 *NL unusable, dead VME. 10511 100 601 1907-1913 *MK autostowed. Repointed. WEA 100 6 1911 Readbacks okay except drive 1 track 26. 1914 Begin at SC. 1914 SC has bogus "antenna position error too large" 10325 messages that flag good data as bad 60-70% of the time. 2016-2050 *MK out of tape, too many terminate commands HUERR 100 34 were sent & the system is confused. Had to wait for commands to execute before taping resumed. 2016 Readbacks okay except Y drive 2 track 25. 2127 Readbacks okay except MK drive 1 track 7. 2145 %BR Wea: Tech reports overcast skies, light rain. 2204 %OV has 35+ mph wind gusts. 2205-2213 *HN El #2 armature overcurrent. ACU 100 8 2228-2230 *HN El #2 armature overcurrent. ACU 100 2 2238 Readbacks okay except Y drive 2 tracks 21 & 25. 2349 Readbacks okay except Y drive 2 tracks 25 & 29. 0000 Date is 2003JAN06/006. 0100 Readbacks okay except BR drive 1 tracks 18 & 20. 0211 Readbacks okay except Y drive 2 tracks 25 & 29. 0228 New operator: T. Perreault 0248 SC observing ends 0322 Readback check okay 0339 HN observing ends 0421 Readback check okay 0443 Y observing ends 0443 FD bad readback drive 1 tracks 4,5,7,20 All others okay 0501 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