VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        BL137Q
Observer:       Lister, M.
Project type:   VLBA
Obs filename:   bl137qcrd.*
Date/Day:       2007APR18/108
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Heidi Gerhardt                                           
           GPS delta, UT1-UTC (-0.10), vclock all ok                            
          %WEA: HN snow likely, SC isolated showers, OV windy    WEA            
          *HN high Tsys likely due to snow in dish.              WEA            
     0622  Begin (except SC)                                                    
0622-0627 *MK focus drive fault, position will not lock          FRM    100    5
           has an error of 0.3.                                                 
1105-1109 *KP AZ motor current sum > 60 amps, put into standby   19993  100    4
1137-1147 *PT High elevation motor currents and AZ#1             ACU    100   10
           armature/electronics CB fault. Antenna put into                      
           standby several times and then stowed. No errors                     
           when antenna was repointed.                                          
     1252 %HN weather station reporting a dewpoint above the     WEA            
           air temperature, wet conditions responsible.                         
           Pointing equation may be affected.                                   
     1340  New operator is Jim Ogle.                                            
     1342 *Sitecam weather: overcast at SC, overcast and                        
           raining at HN, clear skies at NL, FD, LA, KP, OV                     
           and BR. MK still dark, PT sitecam not updating.                      
     1352 %PT cleared FIFO errors from formatter. Data not                      
           affected, they were on a boardset not used at this                   
           observation's datarate.                                              
     1359  LA reports clear skies.                                              
1446-1448 *KP oscillating in AZ. Motor currents were okay.       19993  100    2
           Briefly put antenna in Standby and repointed, okay                   
           now.                                                                 
     1500 %High wind gusts at OV.                                               
     1516  OV reports clear skies.                                              
     1528  KP reports scattered high thin clouds.                               
1900-1901 *KP autostowed, commercial power glitch. Repointed.    COM    100    1
     1906 %FD focus brake fault. Occured during a setup scan     FRM            
           so no data lost.                                                     
     1945  MK reports low clouds approaching site.                              
     2007 %High wind gusts at PT.                                               
     2046 %High wind gusts at KP.                                               
     2102  KP reports scattered high clouds.                                    
2130-2133 *KP oscillating in AZ with high motor currents.        19993  100    3
           Briefly put it in Standby, problem cleared.                          
           Repointed.                                                           
     2145  New Operator: Paul Padilla                                           
     2237 %LA 35+mph wind caution                                               
2320-2327 %FD focus brake fault.  Focus off by ~0.4              FRM    100    7
     0000  Date is 2007APR19/109.                                               
     0215 %HN dew point > air temp by ~1 degree.                                
0439-0441 *SC autostowed for no apparent reason.                 ACU    100    2
     0503 %SC Precipitation                                                     
     0520 %SC dew point > air temp by ~1.3 degrees.                             
0537-0616 *LA communication lost when attempting to switch       20226  100   39
           banks.                                                               
           Additionally, there were doComent errors: tDiscLoop                  
           Problem decoding module NRAO-142                                     
     0541  Rebooted LA VME to attempt reconnection with Mark5                   
           unit                                                                 
     0543  LA VME rebooted, but still no communication with                     
           Mark5                                                                
     0544  LA Mark5 unit rebooted                                               
     0545  New operator is Heidi Gerhardt                                       
     0616  End.                                                                 


Downtime Summary:
	Total downtime : 73 min
	Percentage downtime of observing: 0.5%
	Average downtime per hour : 0.3 min

    Total scheduled observing time (# Antennas): 14340 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.