VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BB246D
Observer:       Bobolz, D.
Project type:   VLBA
Obs filename:   bb246dcrd.*
Date/Day:       2007AUG17/229
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Vclock, gps delta, UT1-UTC all OK.                                   
           Operator is Betty Ragan.                                             
     2358  Begin at all stations except MK.                                     
2358-0000 *PT autostowed. Looks like a power glitch.             COM    100    2
     0000  Date is 2007AUG18/230.                                               
0005-0009 *PT stowed again. Getting AZ#1 and EL#1                COM    100    4
           armature/electronics CB errors. These clear when it                  
           stows, but came back before it even got on source                    
           the first time I tried repointing.  Weather                          
           forecast shows thunderstorms in the area.                            
     0027  Begin at MK.                                                         
0023-0057 *SC suddenly lost power, seems to have been a          COM    100   34
           bit slow switching to the generator. Fire trouble                    
           flag triggered briefly, but has stopped now.                         
           Was seeing multiple errors involving the FRM,                        
           however. Called site tech (Greg) who suggested                       
           trying a master clear. This got rid of the errors,                   
           but all fields for the FRM show up as 0, no matter                   
           what commands it's given. Also, I tried pointing                     
           the antenna twice, and both times it immediately                     
           changed back to standby. Greg is going out to check                  
           it out. Removing it from the observation for now.                    
     0054  SC commercial power is back.  FRM now seems to be                    
           behaving normally.  Antenna is pointing fine. I                      
           called Greg back; looks like he won't need to go                     
           out, after all, unless it happens again.                             
0127-0129 *SC stowed due to power glitch. Went back              COM    100    2
           on generator briefly.                                                
0345-0349 *SC autostowed.  Power glitch.                         COM    100    4
           It's also gotten a number of very brief "AZ #1                       
           armature/electronics CB fault" errors since coming                   
           off generator power.                                                 
     0445  HN raining.                                                          
     0457  End.                                                                 


Downtime Summary:
	Total downtime : 46 min
	Percentage downtime of observing: 1.5%
	Average downtime per hour : 0.9 min

    Total scheduled observing time (# Antennas): 2990 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.