VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BM253A
Observer:       Momjian, E.
Project type:   VLBA
Obs filename:   bm253acrd.*
Date/Day:       2006DEC09/343
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y GB 

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Jim Ogle                                                 
           VCLOCK and gps delta checks okay.                                    
          *PT may experience Mk5 communication glitches due to   19415          
           an unresolved computer problem.                                      
          %High wind gusts at MK.                                               
     0858  Begin at Y.                                                          
0858-1558 *Y BBC 7 experiencing intermittent MCB errors,         19554    5   21
           there may be some data lost during these outages.                    
           BBC 8 having similar problems but much less                          
           often. Downtime is a wild guess.                                     
0858-1558 %Y BBCs 7 and 8 also showing very low total                           
           power levels on USB, it may be too far out on the                    
           edge of the bandwidth. LSB on those BBCs okay.                       
     0900  Begin at all VLBA sites and GB.                                      
           Note: TSMPLOTs show no data for this project at GB                   
           until just before 1200 UT.                                           
0906-0907 *PT Mark5 communications loss.                         19415  100    1
0918-0919 *PT Mark5 communications loss.                         19415  100    1
0927-0928 *PT Mark5 communications error.                        19415  100    1
0938-0939 *PT Mark5 communications error.                        19415  100    1
1018-1019 *PT Mark5 communications error.                        19415  100    1
1023-1025 *Y stopped running the observing file. Resent          OTHER  100    2
           observing file, it started back up.                                  
1141-1145 *Y stopped running the observing file again,           OTHER  100    4
           started up on its own again.                                         
     1430  New operator: T. Perreault                                           
     1558  End.                                                                 


Downtime Summary:
	Total downtime : 32 min
	Percentage downtime of observing: 0.7%
	Average downtime per hour : 0.4 min

    Total scheduled observing time (# Antennas): 4620 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.