PDS_VERSION_ID         = PDS3                                                 
RECORD_TYPE            = STREAM                                               
OBJECT                 = TEXT                                                 
  PUBLICATION_DATE     = 2005-05-31                                           
  NOTE                 = "                                                    
      C32_TRIG_3A.TXT describes the RPWS instrument configuration for         
      the High Frequency Receiver (HFR), the Medium Frequency Receiver (MFR), 
      the Low Frequency Receiver (LFR), the Waveform Receiver (WFR),          
      the Wideband Receiver (WBR), the Langmuir Probe (LP), the Sounder,      
      and the onboard Dust detection algorithm when using Trigger 3A."        
END_OBJECT           = TEXT                                                   
END                                                                           
                                                                              
                                                                              
Trigger 3A Description                                                        
                                                                              
Sequence: C26                                                                 
                                                                              
Trigger 3A (Hirate 10.5 KHz Baseband WBR)                                     
                                                                              
     This mode is designed to provide high frequency resolution using the     
10.5 KHz WBR, while maintaining a survey mode with standard temporal          
resolution and spectral resolution.                                           
                                                                              
Receiver  Frequency Range   Sensors  Time between Snapshots                   
--------  ----------------  -------  ----------------------                   
LFR       1 - 25 Hz         EX, BX   32 seconds                               
MFR       25 - 12 KHz       EW, BZ   32 seconds                               
WBR       0.1 - 10.5 KHz    EX       0.125 to 0.375 second*                   
HFR       3.6 KHz - 16 MHz  EX, EW   7.375 seconds                            
                                                                              
* While the WBR is scheduled to acquire a 3072-sample snapshot every 1/8      
second, in reality it is dependent on the telemetry mode and upon the amount  
of data compression achieved by the Data Compression Chip. Typically the      
telemetry mode might be a 60 kbps data rate mode, resulting in something      
closer to 3/8 second between WBR snapshots.                                   
                                                                              
The HFR is in a modified "Composite Survey" mode, with the H1 frequencies     
which are multiples of 50 KHz excluded to eliminate interference.             
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     16     n  1000   1              3.6-319 kHz          
H1   2E   n        y      2     n  80     1   30    50   325k-1.8MHz          
H2   1E   n        n      1     n  20     1   72    200  1.8M-16MHz           
                                                                              
Bands ABC require 3.16 sec to complete, H1 requires 2.52 sec, and H2 requires 
1.46 sec for a total of  7.14 sec per sweep. This results in a complete sweep 
every 7.375 seconds.