PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
OBJECT               = TEXT                                                   
  PUBLICATION_DATE   = 2002-09-15                                             
  NOTE               = "INFO.TXT describes the contents of this directory."   
END_OBJECT           = TEXT                                                   
END                                                                           
                                                                              
This directory contains Voyager 2 PRA Receiver high time resolution low       
rate receiver band data recorded during the Voyager 2 Saturn encounter        
from 1981-06-05 to 1981-09-28.                                                
                                                                              
The data are stored as 5 ASCII tables (.TAB), each accompanied with a PDS     
label file (.LBL) which describes properties of the data file.  Data          
cover the following time intervals:                                           
       PRA_I.TAB    1981-06-05 - 1981-06-30;                                  
      PRA_II.TAB    1981-07-01 - 1981-07-21;                                  
     PRA_III.TAB    1981-07-22 - 1981-08-13;                                  
      PRA_IV.TAB    1981-08-14 - 1981-09-07;                                  
       PRA_V.TAB    1981-09-08 - 1981-09-28.                                  
                                                                              
Additional information associated with this data set is available in the      
following files:                                                              
                                                                              
file                           contents                                       
                                                                              
/CATALOG/PRA2_INST.CAT         VG2 PRA instrument description                 
/CATALOG/VG2_SAT_HRES_DS.CAT   data set description                           
/CATALOG/PERSON.CAT            personnel information                          
/CATALOG/REF.CAT               key reference description                      
/DOCUMENT/PRA/PRAINST.ASC      ASCII and HTML versions of the PRA             
          and PRAINST.HTM        investigation description paper              
                                 [WARWICKETAL1977]                            
                                                                              
                                                                              
                                                                              
                   /-------------------------\                                
                   |        D A T A          |                                
                   \-------------------------/                                
Columns                                                                       
=====================================================                         
name      type       description                                              
-----------------------------------------------------                         
date      I6         year, month, and day of start of first sweep (SCET) in   
                     the format YYMMDD                                        
second    I6         seconds of day (SCET) of start of first sweep            
sweep1    I284        (see below)                                             
sweep2    I284        (see below)                                             
sweep3    I284        (see below)                                             
sweep4    I284        (see below)                                             
sweep5    I284        (see below)                                             
sweep6    I284        (see below)                                             
sweep7    I284        (see below)                                             
sweep8    I284        (see below)                                             
                                                                              
   Columns sweep1-8 consist of a 4-byte status word followed by 70 4-byte     
   low band channels 1326.0 to 1.2 kHz. For the status word the 12 least      
   significant bits have used, although not all 12 have meaning for PRA       
   low band. Numbering those bits 0 for least significant to 11 for most      
   significant, the bits that have meaning are as follows:                    
      bit                                                                     
       0: 15 dB attenuator in use when equal to 1                             
       1: 30 dB attenuator in use when equal to 1                             
       2: 45 dB attenuator in use when equal to 1                             
       9,10 (together): polarization of first channel sampled (1326.0 kHz)    
      according to the scheme:                                                
      9\10 0 1                                                                
      0    R L                                                                
      1    L R                                                                
   If the status word is zero, any data in that receiver sweep should be      
   discarded.