VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BA068C
Observer:       Y. Asaki
Project type:   VLBA
Obs filename:   ba068ccrd.*
Date/Day:       2004APR03/094
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Paul Dyer.                                               
           VCLOCK and UT1-UTC check ok. PT GPS Delta is bad,                    
           but the antenna is unuseable due to commercial                       
           power outage. All other stations are ok.                             
     1722  Begin.                                                               
          *LA WEA: Raining.                                                     
1722-2026 *PT Antenna is unuseable due to commercial             COM    100  184
           power outage.                                                        
     1722 *KP WEA: Antenna has 1/4" ice on 90% of the                           
           surface. Temperature is above freezing, so it                        
           is improving quickly.                                                
     1733  PT Antenna is on source and writing tape, but there                  
           are clock errors. Kelly is working on it.                            
           GPS Delta is 0.0999998000.                                           
1756-1815 *PT Tape not moving.                                                  
           Power glitch. Antenna has autostowed.                                
1816-1817 *KP EL #2 armature overcurrent. I disabled             ACU    100    1
           the EL axis for a couple seconds to clear the                        
           fault.                                                               
     1815  PT back on source and writing tape, but GPS Delta                    
           is still off.                                                        
1818-1820 *PT Autostowed. Power glitch.                                         
     1825  MK WEA: Site tech reports scattered cumulus clouds.                  
1833-1836 *PT Autostowed. Power glitch.                                         
1843-1845 *PT Autostowed. Power glitch.                                         
1853-1857 *PT Autostowed. Power glitch.                                         
1908-1912 *Autostowed. Power glitch.                                            
1913-1956 *PT Auotstowed. Power glitch. Unclearable                             
           EL #1 armature overcurrent. Kelly will check on it                   
           but is working on the timing problem right now.                      
     1933  All readbacks ok.                                                    
     2026  PT Timeing fixed.                                                    
     2028 *NL WEA: Wind gusts > 35mph.                                          
     2116  All readbacks ok.                                                    
2157-2158 *PT Armature overcurrent AZ #1 and #2                  COM    100    1
           and EL #1. I disabled the axis to clear the faults.                  
     2241 *PT WEA: Raining.                                                     
2341-2345 *PT Autostowed. Power glitch.                          COM    100    4
     2353  All readbacks ok.                                                    
     0000  Date is 2004APR04/095.                                               
0005-0021 *PT Major power hit.                                   WEA    100   16
           Both tape drive have lost vacuum. Antenna has                        
           autostowed. UPS battery alarm.                                       
           I can not reload either drive. Will call site tech.                  
     0021  End.                                                                 


Downtime Summary:
	Total downtime : 206 min
	Percentage downtime of observing: 4.9%
	Average downtime per hour : 2.9 min

    Total scheduled observing time (# Antennas): 4190 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.