 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] R. MCALLISTER      ]    PASS PROGRAM NOTE        ]      100723      ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: FEB. 1989  ]
 ] LSIS/282-7299      ]      RELEASE NOTE( )        ] REV A: 07/11/95  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] REL 19 AND SUBS               ]  CREW ( )  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )] G9                              ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  IMU                                             ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS:  V5.1.8, V4.9A                                 ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] FALSE IMU RESOLVER BITE FAILURE AFTER CHECKPOINT READ               ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] A MASS MEMORY CHECKPOINT READ THAT CHANGES THE VALUE OF ANY IMU     ]
 ] PITCH, AZIMUTH, OR OUTER ROLL GIMBAL RESOLVER OFFSET TERM BY MORE   ]
 ] THAN APPROXIMATELY ONE DEGREE MAY CAUSE FALSE RESOLVER LIMIT AND    ]
 ] IMU FAILURE INDICATIONS FOR ONE PASS OF TERM/IDLE PROCESSING (0.960 ]
 ] SEC).  THIS MAY HAPPEN BECAUSE THE RESOLVER REASONABLENESS BITE     ]
 ] TEST CAN SOMETIMES USE THE UPDATED RESOLVER OFFSET VALUES IN        ]
 ] COMPARING GIMBAL ANGLE DATA THAT REFLECT THE FORMER RESOLVER OFFSET ]
 ] VALUES.  BECAUSE THE IMU SOFTWARE BITE WORDS AND FAILURE FLAGS ARE  ]
 ] COLLECTED IN DIFFERENT ONE HERTZ DOWNLIST FRAMES, ONE OR BOTH OF    ]
 ] THESE FAILURE INDICATIONS WILL BE SET FOR THE AFFECTED IMU'S.       ]
 ] ALSO, THE GROUND IMU CONTROL/MONITOR DISPLAY, SPEC 104, MAY REFLECT ]
 ] THESE BITE TRANSIENTS.                                              ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ] USER RESPONSE:                                                      ]
 ]                                                                     ]
 ] BE AWARE THAT FALSE IMU RESOLVER LIMIT AND FAILURE INDICATIONS MAY  ]
 ] ACCOMPANY THE COMPLETION OF MASS MEMORY CHECKPOINT READS DURING IMU ]
 ] TERM/IDLE PROCESSING.                                               ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]LSIS:  JEAN L. ZOPHY      DATE 08/15/95]                             ]
 ]     -------------------      ---------]                             ]
 ]ASD:   ERIC C. BINGHAM    DATE 08/15/95]                             ]
 ]     -------------------      ---------] DARRELL E. STAMPER 08/24/95 ]
 ]PF MGR: OANH N. PHAM      DATE 08/21/95]------------------- -------- ]
 ]       -----------------      ---------] CHAIRMAN, SASCB      DATE   ]
 ]_______________________________________]_____________________________]
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