ARINC 735 : 1989 SUPP 2

1.0 INTRODUCTION AND DESCRIPTION
1.1 Purpose of this Document
1.2 System Description
1.3 TCAS
1.4 Unit Description
1.5 Altitude Reporting Data
1.6 Interchangeability
1.7 Regulatory Approval
2.0 INTERCHANGEABILITY STANDARDS
2.1 Introduction
2.2 Form Factor, Connectors and Index Pin Coding
2.3 Interwiring
2.4 Power Circuitry
2.5 Environmental Conditions
2.6 Cooling
2.7 Grounding and Bonding
2.8 Standardized Signaling
3.0 TCAS FUNCTIONAL DESCRIPTION
3.1 Aural Advisory and Visual Annunciator Outputs
3.2 Aircraft Interfaces
3.3 Interface with Mode S Transponder
3.4 TCAS Displays
3.5 Discrete Signals
3.6 Program Pins
3.7 Test Pins
4.0 FUNCTIONAL TEST, MONITORING AND BUILT-IN TEST
                EQUIPMENT (BITE)
4.1 TCAS Functional Test
4.2 Indicator Response
4.3 Integrity Monitor Display
4.4 Built-In Test Equipment (BITE)
4.5 BITE Display
4.6 Fault Monitor
4.7 BITE Initiation
4.8 Monitor Memory Output
4.9 Provisions for Automatic Test Equipment
5.0 ANTENNAS
5.1 Omnidirectional Antenna
5.2 Directional Antenna
5.3 Environmental Considerations
5.4 L-band Systems Physical Isolation
5.5 Antenna Installation
5.6 Antenna and Cable Characteristics
5.7 Anti-Icing
6.0 VSI/TCAS DISPLAY
6.1 Standard VSI/TCAS Display
6.2 Alternative TCAS Display Indicators
6.3 Integral Lighting
6.4 Environmental Conditions
7.0 SIMULATOR INSTALLATION
7.1 Use in Simulators
ATTACHMENTS
1A TCAS Mode S Architecture
1B TCAS/Dual Mode Intra System Data Link Diagram
1C TCAS Display and Annunciation Interface Diagram
1D TCAS/Dual Mode S Power Input Configuration Diagram
1E TCAS Input Signal Diagram
1F TCAS Output Signal Diagram
1G TCAS Program Pin Signal Diagram
2 TCAS Computer Unit Connector Positioning
3A Standard Interwiring
3B Notes Applicable to the Standard Interwiring
4 TCAS Computer Unit Connector Insert Layout
5A Mode A Reply Code Combinations
5B ATCRBS Reply Code Pulse Characteristics
6A ARINC 429 Data Bus Interface Definition
6B Coordination Data Bus Definition
6C Dits Control Word for TCAS
                (and Mode S Transponder)
6D Dits Control Word for TCAS, Mode S
                Transponder and TA/RA Displays
6E TCAS Vertical RA Data Output Word
6F Reserved for TCAS Horizontal RA Data Output Word
6G TCAS Traffic Advisory, Intruder Range Word
6H TCAS Traffic Advisory, Intruder Altitude Word
6J TCAS Traffic Advisory, Intruder Bearing
                Estimate Word
6K Standard ARINC 429 Format for Bus 1 Word 2 -
                Transponder to TCAS
6L Standard ARINC 429 Format for Bus 1 Word 8 -
                Transponder to TCAS
6M Standard ARINC 429 Format for Bus 1 Word 3 -
                Transponder to TCAS
6N Standard ARINC 429 Format for Bus 1 Word 4 -
                Transponder to TCAS
6P Standard ARINC 429 Format for Bus 1 Word 5 -
                Transponder to TCAS
6Q Standard ARINC 429 Format for Bus 1 Word 6 -
                Transponder to TCAS
6R Standard ARINC 429 Format for Bus 1 Word 7 -
                Transponder to TCAS
6S Standard ARINC 429 Format for Bus 1 Word 1 -
                TCAS to Transponder
6T Standard ARINC 429 Format for Bus 2 Word 1 -
                TCAS to Transponder
6U Standard ARINC 429 Format for Bus 2 Word 2 -
                TCAS to Transponder
6V Standard ARINC 429 Format for Bus 2 Word 3 -
                TCAS to Transponder
6W Standard ARINC 429 Format - FMS to TCAS
6X Altitude Select Limits Word
6Y TCAS Fault Summary Word
6Z-1 TCAS Display Start of Transmission (STX)
                Record Word
6Z-2 TCAS Display Text Display Data Control Word
6Z-3 TCAS Display Text Display Data Character Word
6Z-4 TCAS Display End of Transmission (EOT) Word
7A Input/Output Circuit Standards
7B ARINC 429 Transmitter Logic States
8 Suppression Pulse System Characteristics
9A Typical Blade Antenna
9B Bearing Antenna Mounting Layout
9C TCAS Directional Antenna Envelope
9D Aircraft Installations
10 TCAS Antenna Configuration
11 Figure Deleted
12 ARINC High Speed Bus (100 KHZ Protocol) for
                TCAS-Transponder
                Interface
13 Environmental Test Categories
14-1 Standard VSI/TCAS Display Interwiring
14-2 Notes to Standard RA Display Interwiring
14-3 Standard VSI/TCAS Display Connector Layout
15-1 Alternate No. 1 VSI/TCAS Display Interwiring
15-2 Notes to Alternate No. 1 VSI/TCAS Display
                Interwiring
15-3 Alternate VSI/TCAS Connector Layout
16-1 Alternate No. 2 VSI/TCAS Display Interwiring
16-2 Notes to Alternate No. 2 VSI/TCAS Display
                Interwiring
16-3 RA Only VSI/TCAS Connector Layout
17-1 Alternate No. 3 VSI/TCAS Display Interwiring
17-2 Notes to Standard RA Display Interwiring
17-3 Alternate No. 3 VSI/TCAS Connector Layout
18 TCAS System Functional Test Normal Output
                Definition
APPENDICES
1 ATA Recommended Standards for TCAS II Display,
                Symbology and Controls
2 Label 270, Resolution Advisory Word,
                Reporting Combinations

Covers a Traffic Alert and Collision Avoidance System (TCAS) designed specifically for installation in a commercial type aircraft. The system monitors the trajectory of these aircraft for the purpose of determining if any of them constitute a potential collision hazard.