VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BM256G
Observer:       Marscher, A.
Project type:   VLBA
Obs filename:   bm256gcrd.*
Date/Day:       2008JAN17/017
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
     0405  Begin file                                                           
           VCLOCK check ok. SC at -0.243 (ping 0.953 second)                    
           UT1-UTC check ok (-0.29)                                             
           GPS delta < 10us (MK: -4.1us)                                        
           Operator: T. Perreault                                               
0405-1624 *HN not observing. Subreflector will not move in       22077  100  739
           ROTATION from 32.5 degrees. ROTATION brake is not                    
           locked, so subreflector should be free to move,                      
           but it won't. Too late for the site techs to work on                 
           the antenna at the FRM. Techs should be able to work                 
           on the antenna (weather permitting) in the morning.                  
     0405  NL wea: projected 3" - 6" of snow overnight                          
     0651  New operator is Betty Ragan.                                         
     0806 %PT got "Sampler 2 clock dropout" and "Data                           
           Switch Module #1 Error" messages.                                    
           These gave way to just "config, status Sampler 2                     
           clock dropout" at 08:11.                                             
0825-0828 %PT HC1 FIFO errors.  Cleared.                         FMTR   100    3
0943-0945 %PT HC1 FIFO errors again. Cleared.                    FMTR   100    2
1055-1729 *Snow starting at NL. There is supposed to be          WEA    100  394
           a large amount of accumulation tonight. Removing it                  
           from the observation to put it into snow avoidance                   
           mode.                                                                
     1129 %FD lost communication with the MK 5 for a few                        
           seconds.                                                             
     1228  SC reports clear, dry weather.                                       
1340-1342 %PT FIFO errors again.                                 FMTR   100    2
     1350  FD reports overcast, dry.                                            
     1445  New Operator is Alan Kerr                                            
     1506  HN is now in tracksun.                                               
     1521 %BR reports frozen fog on everything.                                 
     1624  HN observing again.                                                  
     1729  NL observing again.                                                  
1752-2207 %OV communications down. on dial-backup.                              
1919-1921 *OV not in point.                                      COM    100    2
1949-1951 *PT not in point.                                      COM    100    2
1954-2039 *OV out of point. 55+MPH wind stow.  leaving           WEA    100   45
           it out for now. [edit: an EL brake error needed to                   
           be cleared, also]                                                    
2041-2051 *PT HC1 FIFO error (not HC2)                           FMTR   100   10
     2115 %SC precipitation starting.                                           
     2125  SC precipitation stopped.                                            
     2207  OV off of dial-backup.                                               
     2227  New operator: T. Perreault                                           
2314-2325 *PT Formatter errors                                   FMTR   100   11
           Header control module 1 error                                        
           HC1 FIFO error                                                       
           Backplane 1PPS marker detected                                       
           FIFO 3 1PPS detected                                                 
           FIFO 2 1PPS detected                                                 
           FIFO 1 1PPS detected                                                 
           Cleared errors                                                       
     0000  Date is 2008JAN18/018.                                               
0335-0340 *PT Formatter errors                                   FMTR   100    5
           Header control module 1 error                                        
           HC1 FIFO error                                                       
           Backplane 1PPS marker detected                                       
           FIFO 3 1PPS detected                                                 
           FIFO 2 1PPS detected                                                 
           FIFO 1 1PPS detected                                                 
           Cleared errors                                                       
     0405  End.                                                                 


Downtime Summary:
	Total downtime : 1215 min
	Percentage downtime of observing: 8.4%
	Average downtime per hour : 5.1 min

    Total scheduled observing time (# Antennas): 14400 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.