VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BS125 Observer: Snellen, I.A.G. Project type: VLBA Obs filename: bs125crd.* Date/Day: 2003JAN31/031 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operators: Jim Ogle and Dave Pierce VCLOCK and GPS Delta check OK. *BR WEA: Has 1" of snow in dish. 1630 Begin at all sites, except MK. 1646 *NL WEA: Light rain on webcam picture. 1652-1655 *HN Rotation position error. FRM 100 3 1653 MK Begin file, source still below horizon. 1726-1729 *HN Rotation position error. FRM 100 3 1751 All readbacks okay. 1803 All readbacks okay. 1927-1930 *HN Rotation position error. FRM 100 3 1927-1937 *KP Focus overspeed fault. FRM 100 10 1940 MK WEA: Clear, no precip. 2002-2005 *SC Rotation motion analysis fault. FRM 100 3 2015 All readbacks are okay. 2027-2028 *SC Rotation motion analysis fault. FRM 100 1 2028 *KP Bad readback on drive 2, track 22. *BR Bad readbacks on drive 1, trks. 6 & 8. All other site readbacks are okay. 2040-2043 *HN Rotation position error. FRM 100 3 2103-2106 *HN Rotation position error. FRM 100 3 2209 All readbacks are okay. 2210-2212 *HN Rotation position error. FRM 100 2 2217 *FD Bad readbacks on drive 1, trks. 8 & 20. All other site readbacks are okay. 2231 New operator: T. Perreault 2242 Readback check okay 2253-2256 *HN rotation position error. FRM 100 3 2300-1222 *NL intermittant (50%) high system temperatures on INT 25 200 all channels at 20cm observing, suspect RFI. 0000 Date is 2003FEB01/032. 0058-0101 *KP autostowed. Power glitch. Repointed. COM 100 3 0129-0157 *SC parked to allow site tech to set levels on 2cm FE 100 28 receiver. 0146-0152 *KP autostowed. Power glitch. Repointed. COM 100 6 0156 Readback check okay 0204 %FD bad readback drive 1 track 8 All others okay 0212 Readback check okay 0236 %OV bad readback drive 2 tracks 2,3 All others okay 0442-0454 *FD subreflector not at commanded position in Focus FRM 100 12 Did a MASTER CLEAR reset, subreflector repositioned. 0442-0453 *MK subreflector not at commanded position in FRM 100 11 rotation. Did a MASTER CLEAR reset, subreflector repositioned. 0502-0505 *MK subreflector Rotation drive fault. Did a MASTER FRM 100 3 CLEAR reset. 0528-0536 *MK subreflector Rotation drive fault. Did a MASTER FRM 100 8 CLEAR reset. 0539-0542 *MK subreflector Rotation drive fault. Did a MASTER FRM 100 3 CLEAR reset, then a SKIP 1 0 to re-read the FRM parameters. 0613 Readback check okay 0637 Readback check okay 0645 New operator is Paul Dyer. 0722-0723 *MK subreflector Rotation drive fault. Did a MASTER FRM 100 1 CLEAR reset, then skipped ahead one scan and back to the correct scan to reread the FRM parms. 0722 *MK Bad readbacks on drive 2, all odd # tracks plus 30 and 32. 0854 All readbacks ok. 0940 All readbacks ok. 1027 %PT Bad readback on drive 1, track 4. All others ok. 1222 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