ARINC 711-10: 2002

1.0 INTRODUCTION AND DESCRIPTION
1.1 Purpose of this Characteristic
1.2 Functions of the Equipment
1.3 Unit Description
1.3.1 Receiver Unit
1.3.2 Frequency Control
1.3.3 Antennas
1.4 Interchangeability
1.4.1 General
1.4.2 Interchangeability Desired for the ARINC 711
                 VOR Receiver
1.4.3 "Generation Interchangeability" Considerations
1.5 Regulatory Approval
2.0 INTERCHANGEABILITY STANDARDS
2.1 Introduction
2.2 Form Factors, Connectors, and Index Pin Coding
2.2.1 Receiver Unit
2.2.2 "Standard Control Panel"
2.2.3 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 Standard Outputs
2.6 Environmental Conditions
2.7 Cooling
2.8 Ground and Bonding
3.0 VOR RECEIVER DESIGN
3.1 VOR Receiver
3.1.1 Frequency Range and Channeling
3.1.2 Frequency Selection
3.1.3 Receiver Sensitivity-Aural Reception
3.1.4 Receiver Sensitivity-Navigation Operation
3.1.5 Selectivity
3.1.6 Undesired Responses
3.1.7 Cross Modulation
3.1.7.1 Cross Modulation in Band
3.1.7.2 Cross Modulation Out of Band
3.1.8 VOR Receiver Performance in the Presence of VHF
                 Communications Transmissions
3.1.9 Automatic Gain Control
3.1.10 Desensitization and Interference Rejection
3.1.10.1 AGC Versus Pulse Interference
3.1.10.2 Pulse Noise Output
3.1.10.3 Out-of-Band FM Broadcast Intermodulation
                 Interference
3.1.10.4 Out-of-Band FM Broadcast Desensitization
                 Interference
3.1.11 Adjacent Channel Signal Protection
3.2 VOR Receiver Aural Output
3.2.1 Gain
3.2.2 Audio Output Level Variation with Load Impedance
3.2.3 Audio Frequency Response
3.2.4 Harmonic Distortion
3.2.5 Audio Output Service Adjustment
3.2.6 Audio Phase Shift
3.2.7 Audio Source Impedance
3.3 VOR Receiver Outputs
3.3.1 Digital Omnibearing Accuracy
3.3.2 Variable Conditions
3.3.3 Data Lag
3.4 Monitoring
3.4.1 Input Signal Monitoring
3.4.2 Failure Monitoring
3.4.3 Failure Warning Annunciation
3.5 Functional Test
4.0 ANTENNAS
4.1 VOR Antenna
4.2 VOR Antenna Transmission Line Considerations
4.3 Marker Beacon Antenna
5.0 PROVISIONS FOR AUTOMATIC TEST EQUIPMENT
5.1 General
5.2 Unit Identification
5.2.1 Pin Allocation
5.2.2 Use of ATLAS Language
6.0 MARKER BEACON RECEIVER DESIGN
6.1 General
6.2 Operating Frequency
6.3 Receiver Sensitivity
6.3.1 Receiver Threshold
6.3.2 Threshold Operating Differential (Hysteresis)
6.3.3 Receiver Threshold Service Adjustment
6.4 Selectivity
6.5 Undesired Responses
6.6 Cross Modulation
6.7 Automatic Gain Control
6.8 Receiver Input Impedance
6.9 Marker Beacon Receiver Audio Output
6.9.1 Gain
6.9.2 Audio Output Level Variation with Load Impedance
6.9.3 Audio Frequency Response
6.9.4 Noise and Distortion
6.9.5 Audio Output Service Adjustment
6.10 Marker Beacon Annunciator Actuation Outputs
6.10.1 Discrete Outputs
6.10.2 Digital Output
6.11 Marker Beacon Receiver Function Inhibit
6.12 Functional Test
7.0 BUILT-IN TEST EQUIPMENT (BITE)
7.1 Built-In Test Equipment (BITE)
7.2 BITE Display
7.3 Fault Monitor
7.4 Self-Test Initiation
7.5 Monitor Memory Output
ATTACHMENTS
1 Receiver Unit Connector Positioning
2 Standard Interwiring
                 Notes Applicable to the Standard Interwiring
                 VOR Receiver Connector Layout (Middle Insert)
                 VOR Receiver Connector Layout (Bottom Insert)
3 Digital Data Standards
4 Background Material on the Specification
                 of VOR Receiver Cross Modulation Performance
5 Environmental Test Categories
6 VOR Navigation Nomenclatures
7 Assumed Out of Band FM Broadcast Interference
                 Test Procedures
8 Typical Test Procedures
APPENDIXES
1 Standard Control Panel
2 Excerpts from ICAO Annex 10 "International
                 Standards and Recommended Practices
                 Aeronautical Telecommunications" Relevant to VOR
3 U.S. National Aviation Standard for the VORTAC
                 System
4 Chronology and Bibliography

Describes the desired characteristics of a new generation VOR receiver intended for installation in all types of commercial transport aircraft. Functions of the VOR receiver are to receive and process VHF omni-directional range signals in the frequency band 108.00 to 117.95 MHz. It provides serial digital outputs of omni-bearing, and processes marker beacon transmissions on 75 MHz for annunciation to the flight deck crew.