PDS_VERSION_ID      = PDS3                                                    
LABEL_REVISION_NOTE = "                                                       
  2002-12-18  A.C.Raugh   Edited for lien resolution                          
  "                                                                           
                                                                              
OBJECT     = INSTRUMENT                                                       
  INSTRUMENT_HOST_ID = {"VEGA1","VEGA2"}                                      
  INSTRUMENT_ID      = MISCHA                                                 
                                                                              
  OBJECT     = INSTRUMENT_INFORMATION                                         
    INSTRUMENT_NAME = "FLUXGATE MAGNETOMETER"                                 
    INSTRUMENT_TYPE = "FLUXGATE SENSOR"                                       
    INSTRUMENT_DESC = "                                                       
      Scientific Overview                                                     
      ===================                                                     
                                                                              
      The magnetometer (MISCHA)                                               
      The prime objective of the magnetometer experiment is                   
      to determine the role of the magnetic field in the                      
      interaction between the solar wind and the comet and                    
      to identify the characteristic boundaries of the                        
      cometary environment (bow shock, contact surface,                       
      etc.).                                                                  
                                                                              
      Instrument Overview                                                     
      ===================                                                     
      The sensors of the MISCHA magnetometer are mounted on                   
      a boom. A single-axis sensor and a triaxial sensor                      
      are mounted 1 and 2 m, respectively, from the                           
      edge of the solar panel. The advantage of this                          
      dual-sensor fluxgate system is the possibility to                       
      determine the spacecraft's stray magnetic field.                        
                                                                              
      Magnetometer characteristics                                            
      ============================                                            
      Dynamic range                 +/- 100 nT                                
      Resolution                    0.05 nT (12 bit)                          
      Noise level                   0.01 nT Hz**-1/2                          
      Zero drift                    +/- nT/month                              
      Bandwidth                     10 Hz                                     
      Time resolution               10 vector/s                               
      (high-speed telemetry)        1 spectrum/25 s                           
      Number of frequency points    128/spectrum                              
                                                                              
      Detectors                                                               
      =========                                                               
      MASS:                                                                   
        triaxial sensor ... 500 g                                             
        one-axis sensor ... 200 g                                             
        electronic box ... 2200 g                                             
                                                                              
                                                                              
      Operational Consdierations                                              
      ==========================                                              
      MODE TRASSA 1                                                           
        TRASSA 1 (memory mode)                                                
        this is the cruise phase mode;                                        
        1 vector/2.5 min and 1 averaged                                       
        spectrum/80 min                                                       
                                                                              
      MODE TRASSA 2                                                           
        TRASSA 2 (memory mode)                                                
        2 days until 2 hours before                                           
        Halley encounter and during                                           
        selected cruise phase intervals                                       
        (e.g. Venus tail crossing and                                         
        ICE Giacobini-Zinner encounter);                                      
        1 vector/min and 1 averaged                                           
        spectrum/5 min                                                        
                                                                              
      MODE HIGH SPEED                                                         
        HIGH SPEED (memory mode)                                              
        10 vector/min and 1 averaged                                          
        spectrum/30 sec                                                       
                                                                              
      MODE Direct Transmission                                                
        DT-65 (direct transmission)                                           
        2 hours before until 2 hours                                          
        after Halley encounter                                                
        10 vectors/sec and 1                                                  
        spectrum/25 sec                                                       
      "                                                                       
  END_OBJECT = INSTRUMENT_INFORMATION                                         
                                                                              
  OBJECT     = INSTRUMENT_REFERENCE_INFO                                      
    REFERENCE_KEY_ID = "ESA-SP1066"                                           
  END_OBJECT = INSTRUMENT_REFERENCE_INFO                                      
                                                                              
END_OBJECT = INSTRUMENT                                                       
                                                                              
END