/*****************************************************************************/
/*     This structure describes the format of the                            */
/*     header table of the spacecraft attitude file of the Pioneer Venus     */
/*     Orbiter (PVO) Supplementary Experimental Data Record (SEDR).  The     */
/*     following is an overview in tabular form of the spacecraft attitude   */
/*     header record:                                                        */
/*                                                                           */
/*    +----+----------------------------------------+                        */
/*    |    |BITS -->                                |                        */
/*    +----+----------------------------------------+                        */
/*    |    |           111 1111 1112 2222 2222 2333 |                        */
/*    |    |1234 5678 9012 3456 7890 1234 5678 9012 |                        */
/*    +----+----------------------------------------+                        */
/*    |WD 1|*LH WD                                  |                        */
/*    |   2| Number Of Logical Records In This File |                        */
/*    |   3|      (SPARE)      |    S/C ID          |                        */
/*    |   4|              ORBIT NUMBER              |                        */
/*    |   5|                (SPARE)                 |                        */
/*    +----+----------------------------------------+                        */
/*                                                                           */
/*    WORD 1 OF RECORD 1 IS LOGICAL HEADER WORD                              */
/*                                                                           */
/*       *LH WD       = LOGICAL HEADER WORD                                  */
/*       DATA FORMAT  = BINARY                                               */
/*       BITS  1 - 11 = PHYSICAL RECORD LENGTH = 50 WORDS                    */
/*       BITS 12 - 22 = LOGICAL RECORD LENGTH  =  5 WORDS                    */
/*       BITS 23 - 27 = LOGICAL RECORDS PER PHYSICAL                         */
/*                       RECORD = 10                                         */
/*       BITS 28 - 32 = FILE ID = 3                                          */
/*                                                                           */
/*****************************************************************************/
/* Table format description begins here.
/*****************************************************************************/
OBJECT               = COLUMN
  NAME               = "LOGICAL HEADER WORD"
  DATA_TYPE          = "MSB BIT STRING" 
  START_BYTE         = 1
  BYTES              = 4
  DESCRIPTION        = "This object contains the 4 byte long Logical
  Header Word (LHWD) of the spacecraft attitude file."

  OBJECT             = BIT_COLUMN
    NAME             = "PHYSICAL RECORD LENGTH"
    BIT_DATA_TYPE    = "MSB UNSIGNED INTEGER"
    START_BIT        = 1
    BITS             = 11
    DESCRIPTION      = "This object contains the physical record length
    of each data record in the spacecraft attitude file in 4 byte words.
    The value of this object is always 50."
  END_OBJECT         = BIT_COLUMN

  OBJECT             = BIT_COLUMN
    NAME             = "LOGICAL RECORD LENGTH"
    BIT_DATA_TYPE    = "MSB UNSIGNED INTEGER"
    START_BIT        = 12
    BITS             = 11
    DESCRIPTION      = "This object contains the logical record length
    of each data record in the spacecraft attitude file in 4 byte words.
    The value of this object is always 5."
  END_OBJECT         = BIT_COLUMN

  OBJECT             = BIT_COLUMN
    NAME             = "LOGICAL RECORDS PER PHYSICAL RECORD"
    BIT_DATA_TYPE    = "MSB UNSIGNED INTEGER"
    START_BIT        = 23
    BITS             = 5
    DESCRIPTION      = "This object contains the number of logical
    records contained in each physical record in the spacecraft
    attitude file.  The value of this object is always 10."
  END_OBJECT         = BIT_COLUMN

  OBJECT             = BIT_COLUMN
    NAME             = "FILE IDENTIFIER"
    BIT_DATA_TYPE    = "MSB UNSIGNED INTEGER"
    START_BIT        = 28
    BITS             = 5
    DESCRIPTION      = "This object contains the magnetic tape file
    number on the SEDR tape of the spacecraft attitude file.  The
    value of this object is always 3."
  END_OBJECT         = BIT_COLUMN
END_OBJECT           = COLUMN

OBJECT               = COLUMN
  NAME               = "NUMBER OF LOGICAL RECORDS IN THIS FILE"
  DATA_TYPE          = "MSB INTEGER"
  START_BYTE         = 5
  BYTES              = 4
  DESCRIPTION        = "This object contains the number of logical
  data records in this spacecraft attitude file."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
  NAME               = "SHORT SPARE"
  DATA_TYPE          = "MSB INTEGER"
  START_BYTE         = 9
  BYTES              = 2
  DESCRIPTION        = "This object contains a spare (empty) value."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
  NAME               = "SPACECRAFT ID"
  DATA_TYPE          = "MSB INTEGER"
  START_BYTE         = 11
  BYTES              = 2
  DESCRIPTION        = "This object contains the spacecraft identification
  number for the Pioneer Venus Orbiter.  The value of this object is
  always 12."
END_OBJECT         = COLUMN

OBJECT               = COLUMN
  NAME               = "ORBIT NUMBER"
  DATA_TYPE          = "MSB INTEGER"
  START_BYTE         = 13
  BYTES              = 4
  DESCRIPTION        = "This object contains the orbit number of the
  Pioneer Venus Orbiter for which this data was gathered."
END_OBJECT           = COLUMN

OBJECT               = COLUMN
  NAME               = "SPARE"
  DATA_TYPE          = "IBM REAL"
  START_BYTE         = 17
  BYTES              = 4
  DESCRIPTION        = "This object contains a spare (empty) value."
END_OBJECT           = COLUMN