VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BY019A
Observer:       Yuan,C.
Project type:   VLBA
Obs filename:   by019acrd.*
Date/Day:       2005APR01/091
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Brian Willard.                                           
           WEA: high winds FD,PT,KP,OV,MK.                                      
           LA writing MkV, VSN NRAO-023, Bank B.                                
           KP writing MkV, VSN NRAO-038, Bank A.                                
           Vclock, GPS delta, UT1-UTC values nominal.                           
     0138  Begin at all sites.                                                  
     0139  Readbacks good MK.                                                   
     0239  Readbacks good all sites.                                            
     0307 %FD: occasional very high wind gusts.                                 
0319-0356 *FD: high wind autostow.                               WEA    100   37
     0352 %HN: bad readbacks track 32, drive 1.                                 
           All other readbacsk OK all sites.                                    
     0458  Readbacks good all sites.                                            
     0504  Readbacks OK MK.                                                     
0535-0557 *PT: not recording, drive #1 has a bad power switch    15903  100   22
           and is refusing to work.                                             
     0557  PT writing MkV, VSN NRAO-047, Bank A.                                
     0641  New operator is Jim Ogle.                                            
     0645 %Raining at HN.                                                       
0717-0718 %FD FRM being flagged as out of position; it is        FRM    100    1
           acually in position but it blanked out the command                   
           positions and thought that it was suddenly off                       
           position. Restarted scan to reload the position                      
           commands.                                                            
0756-0821 *FD very high wind speeds, AZ motor currents are       WEA    100   25
           running very high. Stowing antenna for a while to                    
           protect the motors and wait for the winds to calm                    
           down a bit.                                                          
     0835  End.                                                                 


Downtime Summary:
	Total downtime : 85 min
	Percentage downtime of observing: 2.0%
	Average downtime per hour : 1.2 min

    Total scheduled observing time (# Antennas): 4170 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.