VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BB231A
Observer:       Braatz, J.A.
Project type:   VLBI
Obs filename:   bb231acrd.*
Date/Day:       2006DEC23/357
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK GB EB 

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Heidi Gerhardt                                           
           GPS delta, UT1-UTC, vclock check ok                                  
          %BR cloudy possibly snow                                              
          *HN freezing rain                                                     
     0405  Begin                                                                
0405-1355 *FD AZ#2 bearing fault. Unoperable.                    19601  100  590
0406-0537  SC AZ#1 armature/electronics CB fault                 19623          
0414-0541 *SC put into standby by ops, trying to clear ACU       19623  100   87
           fault. Called out site tech, replaced 2 blown                        
           fuses.                                                               
     0629  New operator: T. Perreault                                           
0942-1004 *PT formatter errors                                   FMTR   100   22
           Header control module 2 error                                        
           HC2 FIFO error                                                       
           FIFO 2 1PPS detected                                                 
           FIFO 1 1PPS detected                                                 
           FIFO 0 1PPS detected                                                 
           Cleared errors                                                       
1105-1107 *SC Mark5 communications lost error.                   19622  100    2
           Same as what was going on at PT.                                     
     1355  End.                                                                 


Downtime Summary:
	Total downtime : 701 min
	Percentage downtime of observing: 11.9%
	Average downtime per hour : 7.1 min

    Total scheduled observing time (# Antennas): 5900 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.