VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BA064F Observer: K. Asada Project type: VLBA Obs filename: ba064fcrd.* Date/Day: 2002DEC14/348 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. %SC has a problem with false ACU error flags being 10325 sent, data is not actually affected. *HN 4cm RCP Tsys is 1.75x higher than LCP. 10229 *Raining at HN, possibly sleet or snow. WEA 0910 Begin at all sites except MK. 0910-1911 *Heavy RFI at 13cm on channels 5 and 6 (2325.47 MHz) INT 48 288 at all stations except SC (and MK.) 0925-0930 *PT autostowed, power glitch. COM 100 5 0957 Readbacks okay. 1043 Begin at MK. 1107 *NL bad readbacks on track 6, drive #1. Other sites okay. 1227 %High wind gusts at MK. 1301 Readbacks okay. 1324-1326 *HN rotation position error. FRM 100 2 1343 *Raining at BR. 1401-1403 *BR formatter errors; reconfigured formatter, FMTR 100 2 errors cleared. 1434 OV bad readback drive 2 track 24 All others okay 1435 New operator: T. Perreault 1436 BR wea: low clouds, raining hard 1448 HN wea: overcast, light rain 1606 Readback check okay 1623-1629 *MK subreflector is out of position in both FOCUS FRM 100 6 and ROTATION. Did a MASTER CLEAR to reset the FRM, will let the next source change reposition the FRM. 1642 SC wea: light scattered low clouds, no precipitation 1709-1715 *OV subreflector ROTATION drive fault. Did a MASTER 10363 100 6 CLEAR reset, let subsequent source change position subreflector. 1723 PT wea: clear, no precipitation 1726-1730 *OV subreflector ROTATION drive fault. Did a MASTER 10363 100 4 CLEAR reset and commanded to position. 1739 Readback check okay 1750 KP wea: clear, no precipitation 1808-1815 *OV subreflector had both FOCUS BRAKE FAULT and 10363 100 7 ROTATION DRIVE FAULT errors. Did a MASTER CLEAR reset. 1831-1837 *FD subreflector FOCUS brake fault. Did a MASTER FRM 100 6 CLEAR reset. Let following source change set up subreflector. 1911 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