07/03/03 48821 CTB Converted to XML format This relation is used to contain all versions of the arrays of Spacecraft Characteristics data used by OMS. Each version is identified by the SMS usage date. The description of each array is found in the comments of the PDB:SCHF.DAT file which contains one version of these arrays. Each array has either one or two dimensions. The first dimension is the FGS number. In this table, one dimensional data has a single element per FGS which is given the array index of 1. Two dimensional data will have sequential values of the array index from 1 to the size of the second dimension of the array. There is one record for each array element. Each array is assigned a sequence number so that the data can be retrieved in the same order as the data in the SCHF file. All the values are stored as double precision floating point data. C17 YYYY.DDD:HH:MM:SS - set to the same value for each PDB version. The default value should be set to 9999.999:00:00:00 until the time of the start time of the SMS that first uses that PDB is known. I2 A unique value for each array which is used to maintain the same order of arrays as found in the PDB:SCHF.DAT file which is the source of all the data. I2 1, 2, or 3: used to indicate for which FGS the values apply. I2 An array index identifying each element of the array. The first element has an array_index of one and the last element has an an array_index that is the array dimension. R8 The value of the element of the array that is accessed by fgs_num and index. C6 The name of the array as found in PDB:SCHF.DAT. OMS_SCHF_TYPE OMS Spacecraft Characteristics Relation OMS unique clustered