VERY LONG BASELINE ARRAY OBSERVING LOG
--------------------------------------
Project:        MT603
Observer:       Analysts, Data
Project type:   TEST
Obs filename:   mt603crd.*
Date/Day:       2006JAN24/024
Ants Scheduled: SC HN NL FD LA PT KP OV BR MK

=UT-Time===Comment===============================================MF#===%AD==AMD=
           Operator is Sonja Mendoza.                                           
           HN writing to Mk5 disk NRAO-127, bank B.                             
           FD writing to Mk5 disk NRAO-128, bank B.                             
           LA writing to Mk5 disk NRAO-063, bank B.                             
           PT writing to Mk5 disk NRAO-148, bank B.                             
           KP writing to Mk5 disk NRAO-062, bank A.                             
           BR writing to Mk5 disk NRAO-141, bank A.                             
           MK writing to Mk5 disk NRAO-056, bank B.                             
           SC, NL and OV writing to tape.                                       
           Vclock, GPS delta and UT1-UTC time checks all ok.                    
          %MK WEA: Was snowing earlier at site, snow is                         
           most likely present in the dish.                                     
           SC WEA: Gusty winds.                                                 
     1057  Begin observation.                                                   
1057-1228 %FD Plenum temp (Rm 103) temps are varying by as much                 
           as 7 degrees C (varying very regularly). Equipment                   
           rack temps are going up and down accordingly, could                  
           cause phase jumps/problems.                                          
     1105  Readbacks ok.                                                        
     1121  Readbacks ok.                                                        
1129-1140 *HN FRM out of position (rotation drive fault). Reset  17561  100   11
           but continued intermittant rotation drive faults.                    
           Won't lock into position in rotation (drifting) on                   
           2cm scans.                                                           
     1137  Readbacks ok.                                                        
     1153  Readbacks ok.                                                        
1155-1201 *HN FRM Rotation drive faults, can't clear.            17561  100    6
           So far seen during 2cm and 7mm scans.                                
     1202  Readbacks ok.                                                        
     1217  SC leaves observation.                                               
     1218  Readbacks ok.                                                        
1218-1220 *HN FRM Rotation drive faults, can't clear.            17561  100    2
     1228  End.                                                                 


Downtime Summary:
	Total downtime : 19 min
	Percentage downtime of observing: 2.1%
	Average downtime per hour : 1.3 min

    Total scheduled observing time (# Antennas): 910 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.