VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BG137B Observer: D. Gabuzda Project type: VLBA Obs filename: bg137bcrd.* Date/Day: 2003AUG22/234 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. VCLOCK and gps delta check okay. 0659 Begin. 0833-0837 *PT not reaching commanded elevation position, gets ACU 100 4 close and then bounces about a degree away. Manually commanded it to a lower elevation, which it was able to reach, then restarted the scan to reload the desired elevation and it was able to reach it this time. 0846-0849 *PT not reaching commanded elevation position again. ACU 100 3 Used same procedure as above to get it to work. 1022 Readbacks okay. 1132 Readbacks okay. 1157 Readbacks okay. 1200-1201 *FD FRM MCB error, unsure if focus was in correct FRM 100 1 position or not. Did a master clear, seemed to reset things and it worked properly at next scan change. 1210-1213 *MK rotation position error. Resent command. FRM 100 3 1220-1221 *PT autostowed, commercial power glitch. COM 100 1 1244 Readbacks okay. 1334-1335 *NL focus motion analysis fault. Resent command. FRM 100 1 1338 New operator is Paul Dyer. 1355 LA WEA: Clear and dry. 1439 %FD Bad readback on drive 1, track 27. All others ok. 1455 *KP WEA: Tech reports overcast, low clouds, dry. 1458-1556 *PT Tech working on the ACU. 12225 100 58 1503 All readbacks ok. 1614 *KP Bad readbacks on drive 2, tracks 02-08. All others ok. 1638 All readbacks ok. 1749 %FD Bad readback on drive 1, track 27. All others ok. 1813 All readbacks ok. 1913 MK WEA: Tech reports clear sky, light wind. 1956-1959 *LA Autostowed and VME rebooted due to COM 100 3 a power glitch. 2009 All readbacks ok. 2024 *HN WEA: Raining. 2021-2027 *MK FRM focus position error of 0.5mm. FRM 100 6 2033 All readbacks ok. 2102 All readbacks ok. 2124 KP WEA: Scattered low clouds, dry. 2131 All readbacks okay. 2140 New Operator is Dave Pierce. 2155 All readbacks are okay. 2219 All readbacks are okay. 2243 Readbacks are okay. 2256 OV WEA: Clear, no precipitation. 2331 All readbacks are okay. 2355 All readbacks are okay. 0000 Date is 2003AUG23/235. 0022 *KP Precipitation starting. High tsys on all channels. 0040-0043 *KP Autostowed. Power bump. Repointed. COM 100 3 0041 All readbacks are okay. 0106 All readbacks are okay. 0112-0118 *KP Autostowed. Power bump. Repointed. COM 100 6 0152-0158 *KP Autostowed. Power bump. Repointed. COM 100 6 0155 All readbacks are okay. 0218-0222 *BR AZ unable to attain command position. ACU 100 4 Issued a REOBS command to reset. Appears to have worked. 0241 Readbacks are okay. 0249-0252 *PT El not reaching command position. Did a ACU 100 3 REOBS to reset. 0305 All readbacks are okay. 0518-0522 *SC Autostowed. Power bump. Repointed. COM 100 4 0550 New operator is Jim Ogle. 0655 End. Downtime Summary: Total downtime : 106 min Percentage downtime of observing: 0.7% Average downtime per hour : 0.4 min Total scheduled observing time (# Antennas): 14360 min (10) 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 = System Temperature (TP/SP x Tcal/2) ACU = Antenna Control Unit FRM = Focus/Rotation Mount RFI = Radio Frequency Interference VME = Site control computer CB = Circuit Breaker vclock = Program that compares site clock time to a standard.