Data Set Summary
================
Data Set ID: ULY-J-HISCALE-4-SUMM-DE-V1.0
Instrument: HISCALE Deflected Electrons (DE)
Instrument P.I.: Louis J. Lanzerotti
Data Supplier: Thomas P. Armstrong
Data sampling rate: CRUISE: 1 hour, DE: 15 min
Data Set Start time: 1991-12-31T00:00:00.000Z
Data Set Stop time: 1992-02-16T23:45:00.000Z

Naming convention
-----------------
This data set consists of two data files:

CRUISE.TAB    1 hour averaged cruise data 1991-12-31 to 1992-02-01
DE.TAB        15 minute averaged encounter data 1992-02-02 to 1992-02-16

Record format
-------------
These files can be read according to the FORTRAN format statement:
  '(a24,4(1x,1pe9.2))'
where 'a24' is the time stamp in PDS format: yyyy-mm-ddThh:mm:ss.sssZ.
The individual elements of the time field can be read according to the 
statement:
  '(i4,4(1x,i2),1x,f6.3,1x)' year, month, day, hour, minute, seconds.
thus a record may be alternatively be read according to the format:
  '(i4,4(1x,i2),1x,f6.3,1x,4(1x,1pe9.2))'

Data column descriptions
------------------------
time   a24      spacecraft event time in the format: yyyy-mm-ddThh:mm:ss.sssZ
de1    1pe9.2   electrons (30-50 keV)
de2    1pe9.2   electrons (50-90 keV)
de3    1pe9.2   electrons (90-165 keV)
de4    1pe9.2   electrons (165-300 keV)

Missing data flag value
-----------------------
Any data column whose value is -9.99e+10 is a missing data value.

Data Description
================

HI-SCALE

   The Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low
   Energies is designed to make measurements of interplanetary ions and 
   electrons throughout the entire Ulysses mission.

   The ions (Ei > 50 keV) and electrons (Ee > 30 keV) are identified uniquely 
   and detected by five separate solid-state detector telescopes that are 
   oriented to give nearly complete pitch-angle coverage from the spinning 
   spacecraft.

   Ion elemental abundances are determined by a del E vs E telescope using a 
   thin 5 micrometer front solid state detector element in a three element 
   telescope.  Experiment operation is controlled by a microprocessor-based 
   data system.

   Inflight calibration is provided by radioactive sources mounted on 
   telescope covers which can be closed for calibration purposes and for 
   radiation protection during the course of the mission.

   Ion and electron spectral information is determined using both broad-
   energy-range rate channels and a 32 channel pulse-height analyses 
   (channels spaced logarithmically) for more detailed spectra.

   The instrument weighs 5.775 kg and uses 4.0 W of power. 

About DE (Deflected Electrons)

The Deflected Electron measurements are made using special logic of the 
LEMS30 detector system.

DE1     30-50   keV  electrons
DE2     50-90   keV  electrons
DE3     90-165  keV  electrons
DE4     165-300 keV  electrons