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Common Uncondensed Experimenter Data


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1973-03-05 to 1974-09-30


These uncondensed experimenter data are on 7-track, 800-bpi, binary magnetic tapes, created on a UNIVAC 1108 computer. Each tape contains raw telemetry data for one orbit, from each experiment, -01 to -07. The first file of a tape is a tape header followed by a variable number of data files, one for each successive onboard flight program executed by the spacecraft. The tape header consists of 20 UNIVAC 1108 36-bit words in BCD format and contains satellite identification, tape processing date, orbit number, start year of orbit, and start and stop day and milliseconds of orbit. Each data file begins with a file header record (20 binary words) containing number of elements in the sampling identification dictionary (SID), SID creation date, number of analog tapes used to create file, start and stop time of file, and SID program number corresponding to specific onboard flight program. This is followed by multiple SID records used to indicate the type, timing, length, and source of data in the raw telemetry stream. Next is a data block containing multiple records of 1460 words. The first three words of the data record contain the number of valid data frames, record number, and roll start and stop time (in milliseconds) for that data record. Following these words are up to 32 contiguous groups of 45 words containing the SID index (used in decommutating the telemetry data), data flags, and a telemetry frame.

Alternate Names

  • Common Uncondensed Exprmntr Data


  • Space Physics: Magnetospheric Studies


  • 71-096A-01B
  • 71-096A-02B
  • 71-096A-03B
  • 71-096A-04B
  • 71-096A-05B
  • 71-096A-06B
  • 71-096A-07B

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Paul H. SmithData ProviderNASA Goddard Space Flight Center
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