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R R R R R R R R R R R The GPS partition integrated in the IR portion provides both the GPS "autonomous" and "hybrid" navigation solutions. The term "hybrid" is used to indicate that the navigation solution is a result of combining the GPS, Inertial, and Air Data altitude data. The "autonomous" navigation solution denotes a solution derived solely by the MMR using only satellite data. For each type of data, hybrid and autonomous, the software provides: - the position - the velocities (Ground, N/S, E/W) - the accuracy parameters - the integrity parameters.
**ON A/C 005-049, 051-099, 101-149, 151-199, 201-299, 301-399,
B. Inputs
(1) Digital inputs
(a) FMGC inputs The IR portion is provided with two ARINC 429 low speed buses from the two ARINC 702 Flight Management and Guidance Computers (FMGCs). These buses transmit the following data words: - label 041: SET LATITUDE - label 042: SET LONGITUDE - label 270: FMGC DISCRETES. These data words are used for initialization and BITE purposes.
(b) CDU inputs The IR portion is provided with one ARINC 429 low speed buses from the CDU. This bus transmits the following data words: - label 041: SET LATITUDE - label 042: SET LONGITUDE - label 043: SET MAGNETIC HEADING - label 277: CDU TEST. These data words are used for initialization and BITE purposes.
(c) ADR inputs The IR portion is provided with three ARINC 429 low speed buses from the two other ADIRUs (ADR portion) and from its associated ADR. These buses transmit the following data words: - label 203: ALTITUDE - label 210: TRUE AIRSPEED
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(d)
CFDS input The IR portion is provided with one ARINC 429 low speed bus from the Centralized Fault Display System (CFDS). This bus transmits the following data words:
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label 125: UTC
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label 126: FLIGHT PHASE
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label 155: AIRCRAFT CONFIG
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label 227: CFDS COMMAND
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label 260: DATE
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labels 233 to 236: FLIGHT NUMBER
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labels 301 to 303: AIRCRAFT TAIL NUMBER
For more details Ref. 34-18-00.
(e)
GPS inputs The IR portion is provided with two ARINC 429 high speed buses from the GPS portion of the Multi-Mode Receivers (MMRs). These buses transmit the following data words:
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label 060: MEASUREMENT STATUS
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label 061: PSEUDO RANGE
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label 062: PSEUDO RANGE FINE
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label 063: RANGE RATE
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label 064: DELTA RANGE
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label 065: SV POSITION X
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label 066: SV POSITION X FINE
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label 070: SV POSITION Y
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label 071: SV POSITION Y FINE
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label 072: SV POSITION Z
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label 073: SV POSITION Z FINE
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label 074: UTC MEASURE TIME
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label 076: GPS ALTITUDE (MSL)
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label 101: GPS HDOP
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label 102: GPS VDOP
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label 103: GPS TRACK ANGLE
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label 110: GPS LATITUDE
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label 111: GPS LONGITUDE
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label 112: GPS GROUND SPEED
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label 120: GPS LATITUDE FINE
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label 121: GPS LONGITUDE FINE
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label 125: GPS UTC BCD
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label 130: GPS HORIZONTAL INTEGRITY LIMIT
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label 136: GPS VERTICAL FOM
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label 140: GPS UTC FINE
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label 141: GPS UTC FINE FRACTIONS
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label 143: TERMINAL AREA HIL
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label 150: GPS UTC BIN
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label 162: DESTINATION ETA
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label 163: ALT WAYPOINT ETA
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- label 165: GPS VERTICAL VELOCITY - label 166: GPS N/S VELOCITY - label 174: GPS E/W VELOCITY - label 247: GPS HORIZONTAL FOM - label 260: GPS DATE - label 273: GPS SENSOR STATUS - label 343: DESTINATION HIL - label 347: ALT WAYPOINT HIL - label 377: EQUIPMENT IDENT
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