VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        RDV42
Observer:       D. Gordon
Project type:   GEO
Obs filename:   rdv42crd.*
Date/Day:       2003DEC17/351
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
     1759  Start. Op. D. Medcalf.                                               
1759-1802 *NL unavailable due to elevation motor problems.       13025  100 1443
1759-1830 *PT unavailable due to elevation pointing problems.    13047  100   31
           Problem was drift caused by lack of preloading                       
           between the two elevation motors.  Problem traced to                 
           a bad NAND gate on one of the ACU boards. Repaired.                  
     1759 *Problems starting file at KP, OV, BR. Will be a                      
           few seconds late getting on first source.                            
1759-1805 *Problems starting file at FD. VME not responding.     SCH    100    6
           Have asked site tech to manually reboot computer.                    
1759-1802 *Possible intermittent problems with BBC6 at SC.       13035    5   72
1759-1802 *OV frequent S-band RFI on all channels (5-8).         13052   35  505
           RFI known to exist at frequencies covered by ch 5-7                  
           but channel 8 (2376.99 MHz) is new.                                  
     1804  vclock check okay. GPS deltas < 10us.                                
     1808  Wea. from webcams: SC, FD, LA, PT, KP clear or                       
           mostly clear; OV, MK partly cloudy; HN, BR fog.                      
           Raining at HN. Approximately 50% of BR's dish is                     
           snow covered.                                                        
     2035  About 10% of HN's dish is snow covered. Still                        
           raining off and on.                                                  
     2053 *Have just discovered that the program code in the                    
           crd files is set to "RDV40" rather than 42. On the                   
           advice of the Analysts, will leave files as they                     
           are for consistency with what has been observed so                   
           far.                                                                 
     2230  New operator: T. Perreault                                           
     0000  Date is 2003DEC18/352.                                               
0007-0008 *KP EL#2 armature over current error condition         ACU    100    1
           cleared by momentarily disabling the EL axis.                        
0121-0122 *KP EL#2 armature over current error condition         ACU    100    1
           cleared by momentarily disabling the EL axis.                        
     0500 *HN precipitation is likely changing to snow.                         
           Temperature is just above freezing.                                  
     0643  New operator is Jim Ogle.                                            
0709-0715 *SC autostowed, commercial power glitch. Repointed.    COM    100    6
0857-0904 *HN AZ#1 armature overcurrent fault. Disabled AZ       ACU    100    7
           axis then re-enabled it to clear error.                              
0925-0928 *HN AZ#1 armature overcurrent fault again.             ACU    100    3
1149-1153 *KP EL#2 armature overcurrent fault. Disabled EL       ACU    100    4
           axis then re-enabled to clear error.                                 
     1157  SC reports clear skies.                                              
1321-1412 *FD ran out of tape.                                   HUERR  100   51
     1330 *Can't reach FD on call tech, I assume he's on his                    
           way to the site already.                                             
     1408  FD reports clear skies.                                              
     1414 %HN reports overcast skies, low clouds, some snow                     
           and ice on dish.                                                     
1441-1449 *FD Quality Analysis Module Error, Channel A and B     FMTR   100    8
           formmatter clock error.                                              
           Site tech reset the formatter. Looks ok now.                         
     1452 *FD WEA: Wind gusts > 35mph.                                          
     1515 *BR WEA: Tech reports patchy fog. Dish 1" of snow                     
           on 50% of the surface.                                               
1624-1626 *SC Autostowed. Power glitch.                          COM    100    2
     1802  End.                                                                 


Downtime Summary:
	Total downtime : 2140 min
	Percentage downtime of observing: 14.8%
	Average downtime per hour : 8.9 min

    Total scheduled observing time (# Antennas): 14430 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.