VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BV053B
Observer:       W.H.T. Vlemmings
Project type:   VLBA
Obs filename:   bv053bcrd.*
Date/Day:       2004APR11/102
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Jim Ogle.                                                
          %Raining at FD, LA and MK.                                            
           VCLOCK and gps delta checks okay.                                    
     0453  Begin.                                                               
     0644  Readbacks okay.                                                      
     0751 *LA bad readbacks on track 2, drive #2.                13779          
           Other sites okay.                                                    
     0923 *LA bad readbacks on track 2. Other sites okay.        13779          
     1053 *LA bad readbacks on track 2.                          13779          
          *MK bad readbacks on track 2, drive #2.                13784          
           Other sites okay.                                                    
     1102 %Raining at PT.                                                       
1144-1145 *SC autostowed, commercial power failure. Repointed.   COM    100    1
           Operating on backup generator power.                                 
1158-1159 *SC autostowed again, switching back to commercial     COM    100    1
           power trips an UPS alarm which causes an autostow.                   
     1225 *LA bad readbacks on track 2.                          13779          
          *MK bad readbacks on track 2.                          13784          
           Other sites okay.                                                    
     1246  SC reports clear skies.                                              
     1333  New operator: T. Perreault                                           
     1355 *LA bad readback drive 2 track 2;                      13779          
          *MK bad readback drive 2 track 2;                      13784          
           all other sites ok                                                   
     1516 *LA bad readback drive 2 track 2;                      13779          
          *MK bad readback drive 2 track 2;                      13784          
           all other sites ok                                                   
     1606  BR wea: high thin scattered clouds, no                               
           precipitation                                                        
     1628  LA wea: breaking overcast, dish 60% covered w/ snow                  
           Site tech reports that the webcam is dead as a                       
           result of a lightning strike earlier this week.                      
     1657 *MK bad readback drive 2 track 2;                      13784          
           all other sites ok                                                   
1721-1724 *PT autostowed. Power glitch. Repointed.               COM    100    3
1725-1729 *PT autostowed again. Power glitch. Repointed.         COM    100    4
     1829 *MK bad readback drive 2 track 2;                      13784          
           all other sites ok                                                   
     1854  MK wea: light wind & rain                                            
     1908  KP wea: low clouds, no precipitation                                 
     1957  Readback check ok                                                    
2056-2221  OV loss of intranet comm. Tried to dial into site     COMM           
           with dial backup, get fast busy signal. Tried to                     
           reach oncall site tech, fast busy signal at home.                    
           Tried cell phone, get a "call can not be completed                   
           at this time" message. Suspect that fiber optic                      
           line is down again.                                                  
     2124  Readback check ok                                                    
     2228  OV wea: clear, no precipitation                                      
     2232  SC observing ends                                                    
     2253  End.                                                                 


Downtime Summary:
	Total downtime : 9 min
	Percentage downtime of observing: 0.1%
	Average downtime per hour : 0.1 min

    Total scheduled observing time (# Antennas): 10800 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.