 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] SMS:  B00958     ]
 ] K. MORRIS          ]    BFS PROGRAM NOTE         ]                  ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE:            ]
 ] 382/FB37/4629      ]      RELEASE NOTE ( )       ] 4/04/80          ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ]   9.08 AND SUBS               ]  CREW (X)  GROUND ( )  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]           MAJOR SOFTWARE AREA:            ] OPS MODES AFFECTED:     ]
 ]BSL( ) BSS( ) GNC(X) SEQ( ) SM/SP( ) IPL( )] 3                       ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  UI, UPLINK, IMU, ENTRY                          ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: MG038106/3.2.5.1                               ]
 ]_____________________________________________________________________]
 ] TITLE:  REFSMAT UPLINK                                              ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ]  THE REFSMMAT UPLINKED TO PASS SPECIFIES A DESIRED                  ]
 ]  ALIGNMENT OF THE IMU'S WITH THE IMPLIED REALIGNMENT TO             ]
 ]  BE PERFORMED BY PASS AT SOME LATER TIME UNDER CREW                 ]
 ]  CONTROL.  THE REFSMMAT UPLINKED TO BFS IS ACCEPTED BY              ]
 ]  THE BACKUP OPERATING SYSTEM IN OPS 3 ONLY AND PASSED TO            ]
 ]  THE IMU HIP WHICH INTERPRETS IT AS REPRESENTING THE                ]
 ]  CURRENT IMU ALIGNMENT MATRICES FOR THE THREE IMU'S,                ]
 ]  I.E., THE CURRENT VALUES IN THE T_CLUSTERM50 MATRICES              ]
 ]  ARE OVERWRITTEN WITH THE UPLINKED VALUES.  THEREFORE,              ]
 ]  REFSMMAT SHOULD BE UPLINKED TO BFS ONLY WHEN IT                    ]
 ]  REPRESENTS THE CURRENT IMU ALIGNMENT.                              ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ]  THE USER SHOULD BE AWARE THAT UPLINK OF REFSMMAT TO BOTH PFS AND   ]
 ]  BFS WHILE BFS IS IN OPS 3 MAY CAUSE BFS TO HAVE IMU ALIGNMENT      ]
 ]  MATRICES THAT DIFFER FROM PASS.  IF THAT CONDITION EXISTS, IT CAN  ]
 ]  BE CORRECTED BY MODING BFS TO OPS 0 AND THEN BACK TO OPS 3.  UPON  ]
 ]  RE-ENTRY TO OPS 3, BFS WILL REINITIALIZE ITS T_CLUSTERM50 MATRICES ]
 ]  WITH TRANSFER DATA FROM PASS REPRESENTING THE CURRENT ALIGNMENT    ]
 ]  MATRICES.  IN THE EVENT THAT PASS IS DOWN AT THAT TIME, BFS WILL   ]
 ]  REINITIALIZE WITH THE VALUES PREVIOUSLY UPLINKED TO BFS.           ]
 ]_____________________________________________________________________]
 ]CONCURRENCE: R. VAN DYK        4/07/80 ]APPROVAL:                    ]
 ]RI:<S> A.TROY             DATE 4/07/80 ]                             ]
 ] --------------------         ---------]                             ]
 ]SSD: SAM ANKNEY           DATE 7/28/88 ]                             ]
 ] --------------------         ---------]RW MOOREHEAD         7/30/88 ]
 ]PF MGR: JOE THIBODEAU     DATE 7/29/88 ]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_____________________________________________________________________]
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