ARINC 756-3 : 2004

1.0 INTRODUCTION AND DESCRIPTION
1.1 Purpose and Scope
1.2 Relationship to Other Documents
1.3 Functional Overview
1.4 System Description
1.5 Interchangeability
1.6 Regulatory Approval
1.7 Integrity and Availability
1.8 Reliability
1.9 Testability and Maintainability
1.10 Flight Simulator
2.0 INTERCHANGEABILITY STANDARDS
2.1 Introduction
2.2 Form Factors, Connectors and Index Pin Coding
2.3 Standard Interwiring
2.4 Power Circuitry
2.5 Standardized Signaling
2.6 Environmental Conditions
2.7 Cooling
2.8 Weights
2.9 Grounding and Bonding
3.0 SYSTEM DESIGN CONSIDERATIONS
3.1 System Configurations
3.2 Certification Design Considerations
3.3 System Response to Power Interrupts
3.4 Flight Management Function (FMF) Accuracy
      and Performance
3.5 Dual System Considerations
3.6 Modularity
3.7 Configuration Data Sources
3.8 Installation Considerations
4.0 FLIGHT MANAGEMENT FUNCTION
4.1 Introduction
4.2 Functional Initialization and Activation
4.3 Functional Description
4.4 Training Simulator Support Functions
5.0 GNSS SENSOR FUNCTION
5.1 Description
5.2 General System Capabilities
5.3 Sensor Inputs
6.0 PRECISION LANDING FUNCTIONS
6.1 Introduction
6.2 Interfaces
6.3 Configuration Initialization
6.4 Precision Landing Function Tuning/Control
6.5 Failure Warning Annunciation
6.6 Glide Slope Deviation Bar and Flag Biasing
6.7 Audio Outputs
6.8 Functional Test
6.9 ILS Receiver Design
6.10 MLS Receiver Design
6.11 GNSS Precision Landing Function
7.0 VHF NAVIGATION FUNCTION
7.1 Introduction
7.2 General Capabilities
7.3 Configuration Initialization
7.4 VOR Tuning/Control
7.5 Failure Warning Annunciation
7.6 Functional Test
7.7 VHF Receiver Design
8.0 AIRPLANE PERSONALITY MODULE
8.1 General
8.2 APM Interface Requirements
8.3 APM Data
9.0 GNLU CONTROL PANELS
9.1 General
9.2 Multi-Function Control/Display Unit (MCDU)
9.3 MMR Function Control and Display
10.0 ANTENNAS
10.1 Introduction
10.2 GNSS Upper Antenna
10.3 Localizer Antenna
10.4 Glide Slope Antenna
10.5 MLS Antennas
10.6 VOR Antenna
11.0 STANDARD INTERFACES
11.1 General
11.2 Digital Data Input Ports
11.3 Digital Data Output Ports
11.4 Discrete Inputs
11.5 Discrete Outputs
11.6 GNLU/GNLU Intersystem Bus
11.7 Ethernet Interface
11.8 Reserved ATE Ports
11.9 GNLU Analog Inputs
11.10 GNLU Analog Outputs
11.11 GNLU RF Interfaces
11.12 Aircraft Personality Module
11.13 Front Panel Data Load Connector
12.0 ELECTRONIC FLIGHT INSTRUMENT SYSTEM INTERFACE
12.1 General
13.0 COMMUNICATIONS MANAGEMENT UNIT INTERFACE
13.1 General
14.0 DATA BASE STORAGE CONSIDERATIONS
14.1 Introduction
14.2 Navigation Data Base
14.3 Airline Modifiable Information (AMI) Data Base
14.4 Performance Data Base
14.5 Magnetic Variation Data Base
14.6 Terrain and Obstacle Data
14.7 Airport Surface Map Data
14.8 Configuration Data Base
15.0 BUILT IN TEST AND MAINTENANCE PROVISIONS
15.1 General Discussion
15.2 Fault Detection and Reporting
15.3 Ramp Maintenance
15.4 Provisions for Automatic Test Equipment
16.0 MARKER BEACON RECEIVER DESIGN
16.1 Introduction
16.2 Operation Frequency
16.3 Receiver Sensitivity
16.4 Selectivity
16.5 Undesired Responses
16.6 Cross Modulation
16.7 Automatic Gain Control
16.8 Receiver Input Impedance
16.9 Marker Beacon Receiver Audio Output
ATTACHMENTS
1-1 GNLS Functional Block Diagram
1-2 GNLS Configuration 1 - Navigation Only
1-3 GNLS Configuration 2 - Landing Only
1-4 GNLU Configuration 3 - Navigation and Landing
1-5 GNLU Integrity Guidelines
2-1 GNLU Connector Positioning
2-2 Standard Interwiring
2-3 Notes Applicable to Standard Interwiring
2-4 GNLU Connector Position and Pin Layout
3 (TBD)
4-1 ARINC 429 Input and Output Buses
4-2 FMF Interface Buses
4-3 ARINC 429 VOR Label Definitions
5 Environmental Test Categories
6 DC Power Transient Voltage Requirements
7 ARINC 547 Receiver Unit Design Compatibility
8 Frequency Selector Two-out-of-Five Binary Code
9 GNLU Output Sensitivity
10 Alternate Program Pin Definition
APPENDIXES
A Referenced Documents
B Acronyms
ARINC Standard - Errata Report
ARINC IA Project Initiation/Modification (APIM)

This document sets forth the desired characteristics of the GNSS Navigation and Landing Unit (GNLU) intended for installation in all types of aircraft.