VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BB174F
Observer:       Bower, G.
Project type:   VLBA
Obs filename:   bb174fcrd.*
Date/Day:       2004APR08/099
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK 

=UT-Time===Comment===============================================MF#===%AD==AMD=
     2002  Begin file. MK joins later.                                          
           VCLOCK check ok. SC at -0.137                                        
           UT1-UTC check ok                                                     
           GPS delta < 10 us                                                    
           Operator: T. Perreault                                               
2002-0202 %FD there is a continuous ACU flagging error           13746          
           that is false, data are ok. Suspect that this                        
           flagging error is caused by a bypass of the UPS                      
           system in the pedstal room.                                          
2002-2030 *PT not observing. Extended maintenance visit.         PM     100   28
2030-0202 *PT loss of internet and phone communication with      COMM   100  332
           the site. Phone line and T1 line are down.                           
     2041 %LA wea: rain.                                                        
2045-2047 *KP autostowed. Power glitch. Site tech                COM    100    2
           repointed.                                                           
     2126  PT Western NM Phone company called concerning loss                   
           of communications with PT site. Informed the                         
           tech that both voice and T1 lines are down.                          
     2131 *LA bad readbacks on tracks 2 and 30, drive #2.                       
           Other sites okay.                                                    
     2132  PT site tech called, informed them that Array                        
           Operations supervisor said not to upload any files                   
           to the site until stable communications are                          
           established.                                                         
     2146  New operator is Jim Ogle.                                            
2153-2154 *LA autostowed, commercial power glitch probably       WEA    100    1
           caused by the bad weather.                                           
     2249 %High wind gusts at OV.                                               
     2300 %OV reports overcast skies. Current sitecam image                     
           shows clear sky over the site though with overcast                   
           conditions out on the horizon.                                       
     2301 *LA bad readbacks on tracks 2 and 30, drive #2.                       
           Other sites okay.                                                    
     2332 %Raining at FD.                                                       
     0000  Date is 2004APR09/100.                                               
     0030 *LA bad readbacks on track 2. Other sites okay.                       
0050-0127 *FD tape drive #2 head positioning error, head not     REC    100   37
           moving at all. It just switched off of drive #1 so                   
           there is no option to switch to the other drive.                     
     0103 &FD tech called out.                                                  
     0127  FD tech has a new tape loaded on drive #1,                           
           switching over to that drive.                                        
     0202  End.                                                                 


Downtime Summary:
	Total downtime : 400 min
	Percentage downtime of observing: 11.1%
	Average downtime per hour : 6.7 min

    Total scheduled observing time (# Antennas): 3600 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.