VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BC161B
Observer:       Cotton, W.D.
Project type:   VLBA
Obs filename:   bc161bcrd.*
Date/Day:       2006APR09/099
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
     1631  Begin file.                                                          
           VCLOCK check ok. SC at -0.173                                        
           UT1-UTC check ok (0.26)                                              
           GPS delta < 10 us                                                    
           Mark5 recording:                                                     
           SC, bank A, pack NRAO-018                                            
           HN, bank B, pack NRAO-049                                            
           NL, bank A, pack VIPSK-10                                            
           FD, bank B, pack NRAO-017                                            
           LA, bank A, pack NRAO-030                                            
           PT, bank B, pack NRAO-047                                            
           KP, bank B, pack NRAO-035                                            
           OV, bank B, pack NRAO-163                                            
           BR, bank A, pack NRAO-124                                            
           MK, bank B, pack NRAO-090                                            
           Operator: T. Perreault                                               
     2042 &SC oncall tech is on site. There is a UPSA battery    17992          
           alarm. Observing is not being affected.                              
2113-2122  Intermittant loss of communication with all sites.                   
           This happened yesterday too. Comm will go out then                   
           come back. Suspect someone is working on the phone                   
           and Internet system at NM Tech. (Comm is lost while                  
           on dial backup as well, which indicates a phone                      
           issue.) Helpdesk ticket submitted.                                   
2127-2141  Loss of comm again.                                                  
2204-2217  Loss of comm again.                                                  
2225-2250  Loss of comm again.                                                  
           Went on dial backup for all sites.                                   
           Doesn't matter - still getting loss of comm with                     
           sites even when on dial backup.                                      
2250-2302  Loss of comm again. Contacted George Martin. He said                 
           that he hadn't heard about any phone work with NM                    
           Tech. He also said that the traceroute dying where                   
           it does may be an indication that something is                       
           wrong with Jansky (VLBA Ops Sun Workstation). He                     
           will check the network out to see if there are any                   
           issues.                                                              
2309-2325  Loss of comm again.                                                  
2327-2337  Loss of comm again.                                                  
     2330  George called back. He said that he was also having                  
           problems getting onto the AOC systems either                         
           through the Internet, or through the line that                       
           connects to Charlottesville. He doesn't know if the                  
           problem is with on of our routers or with NM Tech.                   
     0000  Date is 2006APR10/100.                                               
     0054  OV cryo compressor A supply pressure is at 194        17993          
           and dropping. Contacted oncall site tech, he will                    
           go out to check on the compressor.                                   
0118-0208 *OV suspended observing so the site tech can           17993  100   50
           check out the cryo compressor                                        
     0123  Operator is Anthony Sowinski.                                        
     0203  OV Tech replaced 'A' compressor.                                     
     0214  Windy at OV.                                                         
     0231  End.                                                                 


Downtime Summary:
	Total downtime : 50 min
	Percentage downtime of observing: 0.8%
	Average downtime per hour : 0.5 min

    Total scheduled observing time (# Antennas): 6000 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.