R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-13-00Page 3 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
R ----------------------------------------------------------
R | BIT POSITION | DATA |
R ----------------------------------------------------------
R | 1 - 8 | Label |
R | 9 - 10 | SDI |
R | 11 - 28 | Pressure Value |
R | 29 | Sign bit (0 = positive) |
R | 30 - 31 | Status matrix |
R | 32 | Parity bit |
R ----------------------------------------------------------
R ADM Input Label
R These data words are output on all eight Air Data output data
R buses and used for calculation of corrected pressure data.
R 2_ Flight Control Unit (FCU) inputs
R The ADR receives two input buses from the FCU; one for digital
R baro corrections and one for altimeter modes.
R The FCU output bus which corresponds to the CAPT side is only
R connected to ADIRU1 and ADIRU3, and it sends:
R * BCD label 234 Baro Correction 1(hPa)
R * Discrete label 272 Altimeter mode from
R Barometric Bus B, FCU EIS Disc 1.
R The FCU output bus which corresponds to the F/O side is only
R connected to ADIRU2, and it sends:
R * BCD label 236 Baro Correction 2(hPa)
R * Discrete label 272 Altimeter mode from
R Barometric Bus A, FCU EIS Disc 1.
R Each ADR receives the two FCU output bus according to the
R discrete selection as explained in Para. 2.A.(2)(c) (discrete
R inputs).
R Each of these words is a 32-bit BCD word with the following
R format:
R -----------------------------------------------------------
R | BIT POSITION | DATA |
R -----------------------------------------------------------
R | 1 - 8 | Label |
R | 9 - 10 | SDI |
R | 11 - 28 | Value |
R | 29 | Sign bit |
R | 30 - 31 | Status matrix |
R | 32 | Parity |
R -----------------------------------------------------------
R FCU Input Label
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R R The Altimeter mode is coded on the label 272 according to the following format:
R R R R R R R R R -----------------------------------------| Altimeter Mode | Label 272 Bits | | | 29 -28 | |------------------|--------------------| | STD | 0 1 | | QNH | 1 0 | | QFE | 0 0 | | INVALID | 1 1 | -----------------------------------------
R R R R 3_ Centralized Fault Display Interface Unit (CFDIU) inputFor maintenance purposes, the ADR receives one input bus from the CFDIU. For more details, ref. 34-18-00.
R R R 4_ Air Data Reference (ADR) inputEach ADR receives two intercommunication buses from the other ADRs for cross channel comparison purpose.
R **ON A/C 051-099, 106-149, 204-299, 301-399, 401-499,
(b) Analog inputs
1_ Total Air Temperature (TAT) input The ADR measures the resistance of the sensing element of the TAT sensor (Ref. 34-11-00). The ADR subtracts a fixed value (1.04 ohm) from the measured input resistance to compensate for aircraft wiring resistance.
2_ Angle of Attack (AOA) inputs (Ref. Fig. 001) The ADR receives two resolver inputs for angle of attack computation. The following requirements apply to the analog resolver inputs: - load: 15 kilohms minimum - reference: 26V, 400 Hz (same as AOA) - transformer ratio: 0.415 nominal plus or minus 10 % - phase shift: 8.8 to 30 deg. leading - source impedance: Zro = A + jB A less than 315, B less than 725 Zso = C + jD C less than 150, D less than 165 - voltage range: 23 to 31.7 VRMS
R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-13-00Page 5 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
AOA/ADR Wiring
Figure 001
R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-13-00Page 6 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1
-peak factor: 1.31 to 1.51
-electrical range input: plus or minus 60 deg.
3 Analog baro correction inputs
_ The ADR receives three resolver inputs for analog baro correction (from the altimeter for example). These inputs are not used.
(c) Discrete inputs For pin assignment, Ref. 34-12-00. The ADR is provided with the following input discretes:
----------------------------------------------------------------| INPUT SIGNAL | INPUT | INPUT DEFINITION | ----------------------------------------------------------------| ADR ARINC Filter Select | Open/GND | Type A/Type B | | CFDS Message Select | Open/GND | Active/Not Active | | SDI LSB (Middle Insert) | Open/GND | 0/1 | | SDI MSB (Middle Insert) | Open/GND | 0/1 | | Pitot Probe Ht Disc | Open/GND | No Fault/Fault | | Right Static Ht Disc | Open/GND | No Fault/Fault | | Left Static Ht Disc | Open/GND | No Fault/Fault | | TAT Ht Disc | Open/GND | Off/On | | AOA 1 Ht Disc | Open/GND | No Fault/Fault | | AOA Average/Unique | Open/GND | Average/Unique | | VMO/MMO Disc 1 | Open/GND | No/Yes | | VMO/MMO Disc 2 | Open/GND | No/Yes | | VMO/MMO Disc 3 | Open/GND | No/Yes | | VMO/MMO Disc 4 | Open/GND | No/Yes | | SSEC Alternate Disc A | Open/GND | No/Yes | | SSEC Alternate Disc B | Open/GND | N0/Yes | | AOA Alternate Disc 1A | Open/GND | Off/On | | AOA Alternate Disc 1B | Open/GND | Off/On | | AOA Alternate Disc 2A | Open/GND | Off/On | | AOA Alternate Disc 2B | Open/GND | Off/On | | Baro Port "A" | Open/GND | Port B/Port A | | Zero MACH SSEC | Open/GND | Use SSEC/Ignore SSEC | | Zero AOA SSEC | Open/GND | Use SSEC/Ignore SSEC | | AIR FRM ID Code 1/0 |Open/A.I.Com | No/Yes | | AIR FRM ID Code 2/0 |Open/A.I.Com | No/Yes | | AIR FRM ID Code 4/0 |Open/A.I.Com | No/Yes | | AIR FRM ID Code 8/0 |Open/A.I.Com | No/Yes | | AIR FRM ID Code 16/0 |Open/A.I.Com | No/Yes | | AIR FRM ID Code Parity |Open/A.I.Com | No/Yes | | ADR Remote Test | Open/GND | No Test/Test | | ADR OFF DISCR Input | Open/GND | Released/Pressed | | Dual Baro | Open/GND | Sgl Port/Dual Port |
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