PDS_VERSION_ID         = PDS3                                                 
RECORD_TYPE            = STREAM                                               
OBJECT                 = TEXT                                                 
  PUBLICATION_DATE     = 2008-03-21                                           
  NOTE                 = "                                                    
      TRIG_80.TXT describes the RPWS instrument configuration for the         
      High Frequency Receiver (HFR), the Medium Frequency Receiver            
      (MFR), the Low Frequency Receiver (LFR), and the Waveform Receiver      
      (WFR) when using Trigger 80."                                           
END_OBJECT           = TEXT                                                   
END                                                                           

Trigger 80 Description                                                        
                                                                              
Sequence:  C23, C24, C25                                                      
Trigger 80 (Direction-Finding Survey)                                         
This mode is designed to provide a Survey with fast temporal resolution and   
standard spectral resolution for periods during Jupiter Flyby.  Periodic      
Waveform measurements are made.                                               
The entire RPWS frequency range (1 Hz - 16 MHz) is covered.                   
                                                                              
Receiver  Frequency Range   Sensors             Snapshot Spacing              
--------  ----------------  ------------------  ----------------              
LFR       1 - 25 Hz         EX, BX              32 seconds                    
MFR       25 - 12 KHz       EW, BZ              32 seconds                    
WFR       1 - 25 Hz         EX, EW, BX, BY, BZ  160 seconds                   
HFR       3.6 KHz - 16 MHz  EU, EV, EW          32 seconds                    
                                                                              
                                                                              
                                                                              
The HFR is in direction-finding mode for its entire frequency range from 3.6  
KHz to 16 MHz.  Thus, measurements are made on all three monopoles EU, EV     
and EW.  This mode is defined by:                                             
                                                                              
                                                                              
          Correlations Channels    Integ.           Size Frequency            
Band Ant. Auto- Cross- per Band df Period Rep Steps kHz  Start - Stop         
---- ---- ----- ------ -------- -- ------ --- ----- ---- ------------         
ABC  2E   y        y     32     y  250    1              3.6-319 kHz          
H1   2E   y        y      1     y  80     1   76    50   325k-4.1MHz          
H2   2E   y        y      1     y  80     1   61    200  4.0M-16MHz           
                                                                              
Bands ABC require 1.66 sec to complete, H1 requires 13.06 sec, and H2         
requires 10.50 sec for a total of 25.22 sec per sweep.  However, to allow     
time for LFR and MFR snapshots to occur without interference, one complete    
sweep is done every 32 seconds.  To avoid the interference from the DF mode,  
the MFR uses the EW antenna.