ARINC 755-5 : 2018

1.0 INTRODUCTION AND DESCRIPTION
1.1 Purpose of this Characteristic
1.2 Function of the Equipment
1.3 Unit Description
     1.3.1 MLS\ILS\GNSS Receiver
     1.3.2 Control
     1.3.3 Antennas
     1.3.4 Instrumentation
     1.3.5 Airplane Personality Module Interface
     1.3.6 Configuration Data Sources
1.4 Interchangeability
     1.4.1 General
     1.4.2 Interchangeability Desired for the ARINC MMR
            Components
     1.4.3 'Generation Interchangeability' Considerations
1.5 Modularity
1.6 Regulatory Approval
1.7 Relationship to Other ARINC Characteristics
1.8 Testability and Maintainability
2.0 INTERCHANGEABILITY STANDARDS
2.1 Introduction
2.2 Form Factors, Connectors & Index Pin Coding
     2.2.1 MMR Unit
     2.2.2 Standard Control Panel
     2.2.3 Indicators
     2.2.4 Antennas
2.3 Standard Interwiring
2.4 Power Circuitry
     2.4.1 Primary Power Input
     2.4.2 Power Control Circuitry
     2.4.3 The AC Common Cold
     2.4.4 The Common Ground
2.5 Standardized Signaling
     2.5.1 ARINC 429 Data Bus
     2.5.2 Standard 'Open'
     2.5.3 Standard 'Ground'
     2.5.4 Standard 'Applied Voltage' Output
     2.5.5 Standard Discrete Input
     2.5.6 Standard Discrete Output
     2.5.7 MIL-STD-1553 Data Bus
2.6 Environmental Conditions
2.7 Cooling
2.8 Ground Bonding
2.9 Power Dissipation
3.0 RECEIVER COMMON DESIGN REQUIREMENTS
3.1 General
3.2 ARINC 429 Bus Interface
     3.2.1 General
     3.2.2 Tune/Funct Select Data Ports A and B
     3.2.3 ILS Look Alike Output Ports
3.3 MMR Mode Status and Warning Annunciation
     3.3.1 MMR Mode Status Annunciation
     3.3.2 MMR Warning Annunciation
     3.3.3 Required Time for Failure Annunciation for Non
            Selected
3.4 Audio Outputs
     3.4.1 General
     3.4.2 Audio Output Power
     3.4.3 Audio Source Impedance
     3.4.4 Audio Output Level Variation with Load Impedance
     3.4.5 Audio Output Service Adjustment
     3.4.6 Audio Frequency Function Response
     3.4.7 Harmonic Distortion
     3.4.8 Morse Code Audio Output
     3.4.9 Audio Output Muting
3.5 Functional Test
     3.5.1 General
     3.5.2 Power-On Initiated Test
     3.5.3 User Initiated Functional Test
     3.5.4 On-Line Self Tests
3.6 Discretes
     3.6.1 Input Discretes
     3.6.2 Output Discretes
     3.6.3 Program Discretes
3.7 Connector and Pin Assignments
3.8 MIL-STD-1553 Bus Interface
3.9 TO/FRO Signal
3.10 Data Loader
3.11 Installation Considerations
     3.11.1 Dual Input Sensors
     3.11.2 Triple MMR Installations
4.0 ILS RECEIVER DESIGN
4.1 Localizer Receiver
     4.1.1 Frequency Range and Channeling
     4.1.2 Frequency Selection
     4.1.3 Receiver Sensitivity-Aural Reception
     4.1.4 Receiver Sensitivity-ILS Reception
     4.1.5 Selectivity
     4.1.6 Undesired Responses
     4.1.7 Cross Modulation
     4.1.8 VOR-Localizer Interference
     4.1.9 Localizer Receiver Performance in the Presence of
            VHF Communications Transmissions
     4.1.10 Automatic Gain Control
     4.1.11 Desensitization and Interference Rejection
4.2 Localizer Receiver Audio Output
     4.2.1 Audio Output
     4.2.2 Gain
     4.2.3 Harmonic Distortion
     4.2.4 Audio Output Service Adjustment
     4.2.5 Audio Phase Shift
     4.2.6 Automatic Gain Control
     4.2.7 Audio Frequency Function Response
     4.2.8 Audio Output Power
     4.2.9 Harmonic Distortion
4.3 Glide Slope Receiver
     4.3.1 Frequency Range and Channeling
     4.3.2 Frequency Selection
     4.3.3 Receiver Sensitivity
     4.3.4 Selectivity
     4.3.5 Undesired Responses
     4.3.6 Cross Modulation
     4.3.7 Automatic Gain Control
     4.3.8 Desensitization and Interference Rejection
4.4 ILS Receiver ARINC 429 Outputs
     4.4.1 Deviation
4.5 Course Deviation Output Linearity
     4.5.1 Localizer Course Deviation Output Linearity
     4.5.2 Glide Slope Course Deviation Output Linearity
4.6 Course Stabilities
     4.6.1 Localizer Course Centering Stability
     4.6.2 Glide Slope Course Centering Stability
4.7 Deviation Output Damping
4.8 Monitoring
     4.8.1 Input Signal Monitoring
     4.8.2 Failure Monitoring
     4.8.3 Monitoring Integrity
4.9 Failure Warning Annunciation
     4.9.1 Status Warning Annunciation
4.10 Ground Station Ident Reporting
5.0 MLS RECEIVER DESIGN
5.1 General Requirements
5.2 MLS Modes of Operation
5.3 Receiver Control
     5.3.1 Channel Selection Tune/Funct Select Data
     5.3.2 Azimuth Angle Selection
     5.3.3 Glide Path Angle Selection
     5.3.4 Range Input
5.4 RF Response Requirements
     5.4.1 Channel Requirements
     5.4.2 Acquisition Sensitivity
     5.4.3 Sensitivity
     5.4.4 Dynamic Range
     5.4.5 Selectivity
     5.4.6 Frequency Stability
     5.4.7 MLS RF Antenna Ports
     5.4.8 Emission
5.5 Signal Processing
     5.5.1 Signal Validation
     5.5.2 Acquisition
     5.5.3 Track
     5.5.4 Clearance Signals
     5.5.5 Failure Warnings Annunciation
5.6 Receiver Performance, Digital Data Outputs
     5.6.1 Accuracy (No Multipath) At Nominal Signal Levels
     5.6.2 Signal Level Variation At Low Signal Levels
     5.6.3 In-Band Interference without Desired Signal
     5.6.4 In-Band Interference with Desired Signal
     5.6.5 Out-of-band Interference
     5.6.6 Scanning Beam Width Variation
     5.6.7 Signal Interruption
     5.6.8 Proportional Coverage
     5.6.9 Accuracy (In Multipath)
5.7 Outputs
     5.7.1 ARINC 429 Data Output
     5.7.2 MLS Deviation Output Characteristics
     5.7.3 Audio Output
6.0 GNSS PRECISION LANDING GUIDANCE FUNCTION
6.1 Introduction
6.2 GLS Operational Modes
6.3 GLS Precision Approach Selection
6.4 GLS Interfaces
     6.4.1 GLS Inputs
     6.4.2 GLS Outputs
6.5 GLS Function Monitoring/Alarms
     6.5.1 GLS Operation
     6.5.2 GLS Precision Approach Mode
6.6 GLS Proportional Lateral Deviation
     6.6.1 GLS Proportional Vertical Deviation
     6.6.2 Scaling and Sensitivity of Rectilinear Deviation Data
6.7 GLS Function Monitoring/Alarms
     6.7.2 GLS Input Signal Monitoring
     6.7.3 GLS Failure Monitoring
     6.7.4 Monitor Integrity
6.8 Mode Code Audio Output
6.9 Approach Ident Reporting
7.0 MMR CONTROL AND DISPLAY
7.1 MMR Control
     7.1.1 Maximum Time to Switch Modes
7.2 Modes of Operation
     7.2.1 Standby Mode
     7.2.2 ILS Mode
     7.2.3 MLS Modes
     7.2.4 GLS Modes
     7.2.5 Data Broadcast Mode (Optional)
     7.2.6 SBAS GLS (Optional)
     7.2.7 FLS (Optional Mode)
8.0 ANTENNAS
8.1 Introduction
8.2 MLS Antennas
     8.2.1 Antenna Configurations
     8.2.2 Antenna Characteristics
     8.2.3 Installation Considerations
     8.2.4 Antenna Design
     8.2.5 Antenna Preamplifier
     8.2.6 Power Divider Module Characteristics
8.3 ILS Antennas
     8.3.1 Localizer Antenna
     8.3.2 Glide Slope Antenna
8.4 GPS/GNSS Antennas
     8.4.1 Introduction
9.0 DIFFERENTIAL DATA LINK RECEIVER
9.1 VHF Data Link
     9.1.1 General Provisions
     9.1.2 Receiver Control
     9.1.3 RF Characteristics
9.2 C-Band Data Link
10.0 AIRPLANE PERSONALITY DATA
10.1 General Requirements
10.2 APM Interface Requirements
10.3 APM Memory Map
10.4 APM Data Definition
     10.4.1 APM Data-Block Format
     10.4.2 Definition of APM data-Block Format
     10.4.3 GLS APD Message
     10.4.4 MLS APD Message
10.5 Data Integrity Requirements
10.6 Data Reliability Requirements
10.7 Data Loading Requirements
10.8 Data Configuration Requirements
11.0 PROVISIONS FOR AUTOMATIC TEST EQUIPMENT
11.1 General
11.2 Unit Identification
11.3 MMR BITE
     11.3.1 BITE Interface
11.4 Purpose of the OMS
     11.4.1 Interoperability with Different OMS
11.5 Fault Monitoring
11.6 OMS/CFDS Bus
11.7 Outputs to Support OMS/CFDS Bus
12.0 GNSS RECEIVER DESIGN
12.1 Description
12.2 General Capabilities
12.3 Modes of Operation
12.4 Satellite Acquisition
     12.4.1 Normal Acquisition
     12.4.2 Abnormal Acquisition
     12.4.3 Acquisition Time
12.5 Integrity Monitoring
     12.5.1 Time to Alarm
     12.5.2 Degraded Performance
12.6 Receiver Autonomous Integrity Monitoring (RAIM)
12.7 Predictive RAIM (PRAIM)
12.8 GNSS Sensor Performance
12.9 GNSS Sensor Interfaces
     12.9.1 Inputs
     12.9.2 Outputs
ATTACHMENTS
 1 MMR Digital Characteristic with Growth Capabilities
 2 Connector Positioning
 3-1 Standard Interwiring Digital MMR
 3-2 Standard Interwiring - Notes Applicable to the
     Standard Interwiring
 3-3 MMR Middle Plug (MP) Connector Insert Pin
     Layout
 3-4 MMR Middle Plug (BP) Connector Insert Pin
     Layout
 3-5 MMR Bottom Plug (BP) Connector Insert Pin
     Layout
 4-1 MMR ARINC 429 Label Usage by Mode
 4-2 MMR ARINC 429 Attributes
 4-3 MMR ARINC 429 Label Descriptions
 4-4 International Alphabet No. 5 (IA-5)
 4-5 MMR Bus Configuration/Utilization
 4-6 Sign Status Bit of all Labels on ILS Look-a-Like Bus
     and GLS Data Broadcast Output Bus
 4-7 Final Approach Segment Data Message (FASDM)
 5-1 Aircraft Personality Module (APM)
 5-2 Aircraft Personality Module (APDM)
 6 Typical Audio Output Test Procedures
 7 Environmental Test Categories
 8 MLS\DME\VOR Channel Pairing
 9 Antenna Design
 10 Output Sensitivity
 11 FM Interference
 12 Design Goals for ILS Receiver
 13 Table of MLS Warning Outputs
 14 Dual Assignment Pins for Military Version MMR
 15 MMR Redundant Sensor Interfacing
 16 MLS Minimum RF Power Density Levels
 17 Angle Guidance Output Characteristics
 18 Modulation Envelope Simulating Signal Interruption
 19 MMR Antenna Switching
 20 Alternate Program Pin Definition
 21 MLS Auxiliary Word Organization
APPENDICES
 A VDB Messages
 B Glossary
 C Referenced Documents
ARINC Standard - Errata Report
ARINC IA Project Initiation/Modification (APIM)

Describes a multi-mode receiver capable of providing flight path deviation guidance (corrections) to the aircraft during the approach and landing phase.