Block Diagram

FCC ID: P8CTT-951

Block Diagram

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FCCID_303509

1 T2CAS BLOCK DIAGRAMS 1.1 T2CAS Typical Installation The figure below illustrates a typical aircraft installation of the T2CAS. The system is designed as an integrated safety solution, available as a replacement to the existing TCAS 2000 LRU. The developed LRU is intended for use without modification across the range from general aviation to commercial aircraft. TOP BOT ANT ANT Traffic Display A615 PDL A429 A429 EFIS or VSI/TRA A429 & Mode S CP Discrete TCAS-2000 Visual Alerts MODE S A429 & DADC A429 Function EFIS, EICAS, XPDRS Discrete Lamps GPS 8 / 600 Ohm Aural Alerts A429 & 8 / 600 ICS or Speaker RAD ALT Analog Ohm A429 & Analog A429 FMS A429 IRS / AHRS A429 Visual Alerts A429 & A429 & Discrete EFIS, EICAS, ILS / MLS Analog Lamps TAWS / EFIS/Wx CP A429 A429 & Windshear Terrain Display AOA / FLAPS Function A453 Analog EFIS or Wx DISCRETES CMC/CFDS A429 APM Laptop PC or RS-232 Palm Pilot A615A PDL Ethernet Compact Flash Card GPS GPS A743A ANT Function Output System Aircraft Interface 1.2 T2CAS Functional Overview The figure below indicates the functional block diagram for T2CAS functions. System inputs and outputs are described in terms of the information driving the functions and do not describe the LRUs themselves.

T2CAS Functional Block Diagram System Inputs SystemOutputs GFM A/C State GCAM Output Display Outputs GFM Input GCAM - TAWS Algorithms GCAM - Speed (VS, CAS, - GPWS TAS) Pre-Processing Post-Processing Accepts - Caution and Warning - FLTA Indicators to - Air Temp Accepts - PDA Platform - Flap Setting Symbol specific - Data Source Selection - Windshear Algorithms - Alert Prioritization speciific Generators - Angle Of Attack - Parameter Consolidation - Glideslope Deviation bus words - Data Extrapolation - Display Buffer output - Terrain Map Display - Caution or warning Formatting - Localizer Deviation and bits 11 generation 11 11 variables and - Heading allocates to - Flight Path Angle and - Altitude allocates to specific Aural Messages - Lat / Long platform Aircraft buses - TAWS and Windshear - Airborne/On ground and labels; specific Cautions (Landing Gear) BITE such as: - Altitude Callouts - Selected Altitude IO DB input 7 - Bank Angle warnings - Selected Altitude Rate - Selected Airspeed variables. Aircraft Specific Converting Database Example: Caution and Warning Aircraft Health Perf DB Converting message #1 Monitoring ARINC 429 OMS and #2 - Central Mainenance LRU Configuration Data Computer Label 310 - Centralized Fault To specific and 311 4 DIsplay System A429 or A453 8 bus words To IRS Lat #1 and IRS and labels Data loading Long #1 -BITE data Dataloader - Event records - Fault records 4 Data Recorder: IO DB Data loading Fault Log, Event Data Recording Aircraft Specific - TAWS Database - Terrain Database 4 Database GPS Outputs - Airport Database - Flight Test Data - Aircraft Performance Power-up/Power-down - ARINC 743A GNSSU Data 6 LRU Configuration Data Display Outputs TAWS / RWS Functionality GFM Functionality 8 - Traffic Advisory - Resolution Advosory GPS Antenna - RF Input GPS System 10 Aural Messages - Traffic Advisories - Resolution Advisories Airspace Surveillance TCAS System -Transponder Input (no change from heritage TCAS 2000 design, including BITE and I/O characteristics) Data loading 9 -BITE data - Event records External - Fault records New T2CAS External Data Transfer System Heritage TCAS External Data Transfer Internal New T2CAS Internal Data Transfer Function # - Section where function is described Several key data transfer points are shown in this diagram, but some function-to-function data transfers are omitted. - Indicates T2CAS system unique functionality. - Indicates functions interfaced to, but not under ACSS design responsibility for T2CAS.

- Indicates aircraft specific functionality loaded through a separate database. T 2 CAS LRU A1 Interconnect A8 GPS (optional) GPS Antenna Comp. AMD K-6 P/S Voltages Flash Conn. Internal GPS I/O A7 TAWS / Windshear Processor External GPS I/O PDL I/O P1 P2 External TAWS I/O BITE I/O MOT MOT P/S Voltages 8245 8245 TCAS to TAWS I/O A2 TCAS Processor PDL I/O P/S Voltages CAS SURV ARINC BITE I/O SDP-185 SDP-185 External TCAS I/O PDL 600 APM Conn. Internal TCAS I/O Conn. A3 TCAS Transmtter Transmitter Output Transmitter Modulation & P/S Voltages P/S Voltages A4 Power Supply Internal TCAS I/O Aircraft Power BITE P/S Voltages LEDS A5 TCAS Receiver I/O Internal TCAS I/O Local Oscillator Output Test TCAS RF Antenna Switch - Indicates heritage TCAS 2000 design which will be unchanged on T2CAS program Note: A6 assembly is the cooling fan, present 4-MCU units only.


Document Created: 2003-02-18 09:45:32
Document Modified: 2003-02-18 09:45:32
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