VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BB228A
Observer:       Bietenholz, M.
Project type:   VLBA
Obs filename:   bb228acrd.*
Date/Day:       2006DEC03/337
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y GB EB 

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is A. Sowinski.                                             
           UT1-UTC correct, gps delta and vclock checks okay.                   
     1940  Begin at SC,HN,NL,BR,EB,GB.                                          
     2010  Begin at LA.                                                         
     2026  Begin at PT.                                                         
     2035  Begin at FD.                                                         
     2047  Begin at OV.                                                         
2047-1031 %OV Low receiver amplitudes at 4cm LCP.                19477   50  412
2048-2049 *PT Mark5 communications glitch.                       19415  100    1
     2054  Begin at KP.                                                         
2108-2109 *PT Mark5 communications glitch.                       19415  100    1
     2127  Begin at Y.                                                          
2127-0916 *VLA Channels 1-4 low BBC power due to limited LO      BBC     20  141
           frequency range. Channel 4 afffected only very                       
           slightly.                                                            
2148-2149 *PT Mark5 communications glitch.                       19415  100    1
2352-2353 *PT Mark5 communications glitch.                       19415  100    1
     0000  Date is 2006DEC04/338.                                               
0016-0017 *PT Mark5 communications glitch.                       19415  100    1
0018-0019 *PT Mark5 communications glitch.                       19415  100    1
     0048  Begin at MK.                                                         
     0225  New operator: T. Perreault                                           
0306-0307 *PT Mark5 communications lost error.                   19415  100    1
0344-0345 *PT Mark5 communications lost error.                   19415  100    1
     0411 %MK wea: raining                                                      
0526-0527 *PT Mark5 communications lost error.                   19415  100    1
0538-0539 *PT Mark5 communications lost error.                   19415  100    1
0549-0551 *PT Mark5 not recording.                               OTHER  100    2
           Pack in bank A (NRAO-104) filled up and switched to                  
           pack in bank B (VIPSU-05). Recorded 0.35 Gb then                     
           stopped. Before I could do anything, source change                   
           happened and recording restarted ok.                                 
           Got a message at 05:49:26 UT that:                                   
           "BB228A writing on tape ???????? on drive 2"                         
           Will report this to Walter Brisken.                                  
     0615  EB observing ends                                                    
0624-0625 *PT Mark5 communications lost error.                   19415  100    1
0642-0643 *PT Mark5 communications lost error.                   19415  100    1
0747-0748 *PT Mark5 communications lost error.                   19415  100    1
0820-0821 *PT Mark5 communications lost error.                   19415  100    1
     0906  SC observing ends                                                    
     0916  Y observing ends                                                     
0918-0919 *PT Mark5 communications lost error.                   19415  100    1
0931-0932 *PT Mark5 communications lost error.                   19415  100    1
0939-0940 *PT Mark5 communications lost error.                   19415  100    1
0944-0945 *PT Mark5 communications lost error.                   19415  100    1
     1031  End.                                                                 


Downtime Summary:
	Total downtime : 573 min
	Percentage downtime of observing: 5.8%
	Average downtime per hour : 3.5 min

    Total scheduled observing time (# Antennas): 9801 min (11)

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.