VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BV056A
Observer:       Vlemmings, W.H.T.
Project type:   VLBA
Obs filename:   bv056acrd.*
Date/Day:       2004DEC08/343
Ants Scheduled: SC HN NL FD LA PT KP OV BR 

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Phillip Hicks, Operator du jour.                                     
           MK icy conditions, BR snow in the dish & cloudy, PT                  
           cloudy, remaining antennas mostly clear.                             
           Vclock OK (-0.124 SC max)                                            
           GPS OK (4.5us max at NL)                                             
           UT1-UTC = -0.50 OK                                                   
     1654  Start observing files.                                               
     1657  All antennas on source.                                              
1654-0104 *MK Stowed due to icy conditions. Roads closed.        WEA    100  490
1654-1728 *NL Cryogenics checkout.                               15364  100   34
1659-1707 *OV vertex room check.                                 OTHER  100    8
     1712  Readback test OK, no problems seen.                                  
1716-1900  MK raining.                                                          
     1757  Readback test OK, no problems seen.                                  
     1840  Readback Test: KP, track 12 bad. Rest OK.                            
     1924  Readback test show bad on Track 2, Rec. 2, at LA.                    
           Rest OK.                                                             
     1936  Readback test: LA - Rec#2, track bad.                                
           Readback test: OV, Rec#2, Track #30 bad.                             
           Rest OK.                                                             
     2008  Readback Tests: All OK.                                              
     2009 %HN Wind gust > 35mph.                                                
     2019 %BR tracks 3,5 bad on rec.#1                                          
     2030  On duty operator: Peggy Perley                                       
     2052  All readbacks OK, including BR tracks 3,5                            
     2200 %SC RCP channels - switched power low occasionally     15349          
           Possible RFI???                                                      
     2231  All readbacks OK.                                                    
     2235  New operator is Jim Ogle.                                            
     2304  Readbacks okay.                                                      
2312-2314 *SC autostowed, commercial power glitch. Repointed.    COM    100    2
2314-2316 *FD FRM cycled power and lost commanded positions.     FRM    100    2
           Restarted scan to reload commands.                                   
2316-2320 *NL tape not moving, no apparent reason. Restarted     SW     100    4
           scan, tape started moving again.                                     
2347-2348 *FD FRM cycled power again.                            FRM    100    1
     2348  Readbacks okay.                                                      
     2359  Readbacks okay.                                                      
     0000  OV wea: Cloudy, no precipitation.                                    
     0000  Date is 2004DEC09/344.                                               
     0054  Readbacks okay.                                                      
     0104  End.                                                                 


Downtime Summary:
	Total downtime : 541 min
	Percentage downtime of observing: 12.3%
	Average downtime per hour : 7.4 min

    Total scheduled observing time (# Antennas): 4410 min (9)

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.