 +_____________________________________________________________________
 ] AUTHOR:            ]                             ] DR:              ]
 ] R. BARRETT         ]    PASS PROGRAM NOTE        ]     37462        ]
 ]____________________]                             ]__________________]
 ] ORG/PHONE:         ] OPS NOTE ( )  USER NOTE (X) ] DATE: AUG. 1987  ]
 ] VER/282-7385       ]      RELEASE NOTE( )        ]                  ]
 ]____________________]_____________________________]__________________]
 ] OI/FLIGHT EFFECTIVITY:        ]  USER AFFECTED:                     ]
 ] REL 18 AND SUBS               ]  CREW ( )  GROUND (X)  DUMP ONLY ( )]
 ]_______________________________]_____________________________________]
 ]        MAJOR SOFTWARE AREA:       ] OPS MODES AFFECTED:             ]
 ]SSW ( )  GNC (X)  VU ( )  SM/PL ( )] G9                              ]
 ]_____________________________________________________________________]
 ] SOFTWARE SUB-AREA:  IMU, ECP                                        ]
 ]_____________________________________________________________________]
 ] PRINCIPAL FUNCTIONS: V4.10, V4.9A, V4.11                            ]
 ]_____________________________________________________________________]
 ] TITLE:                                                              ]
 ] IMU TIME TAG JITTER                                                 ]
 ]_____________________________________________________________________]
 ] DESCRIPTION:                                                        ]
 ]                                                                     ]
 ] THE IMU TIME TAG JITTER TOLERANCE REQUIREMENT IS PLUS OR MINUS .7   ]
 ] MSEC (3 SIGMA).  NO MORE THAN 2% OF THE TIME TAGS ARE ALLOWED TO    ]
 ] EXCEED THE PLUS OR MINUS .7 MSEC TOLERANCE.  IF EITHER OF THE VU    ]
 ] FUNCTIONS AI MODE 0 OR AI MODE 1 IS EXECUTED IN PARALLEL WITH AN    ]
 ] ACTIVE IMU SOP SUBMODE, THEN SOME JITTER (ALTHOUGH LESS THAN 2%)    ]
 ] IN EXCESS OF PLUS OR MINUS .7 MSEC WILL OCCUR.                      ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]USER RESPONSE:                                                       ]
 ]                                                                     ]
 ] TO OBTAIN THE BEST SOFTWARE PERFORMANCE, DON'T RUN AI MODE 0 OR 1   ]
 ] IN PARALLEL WITH THE FOLLOWING IMU SOP SUBMODES:  ATTITUDE DETER-   ]
 ] MINATION, HANGAR CAL A, HANGAR CAL B, HANGAR CAL C, PREFLIGHT CAL   ]
 ] A, GYROCOMPASS ALIGNMENT.                                           ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]                                                                     ]
 ]_____________________________________________________________________]
 ]CONCURRENCE:                           ]APPROVAL:                    ]
 ]IBM: WYATT COOPER         DATE 7/28/88 ]                             ]
 ]    --------------------      ---------]                             ]
 ]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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