RTCA DO 179 : 1982

Foreword
1.0 Purpose and scope
1.1 Introduction
1.2 System overview
1.2.1 Basic system description
1.2.2 Background
1.2.3 Future direction
1.2.4 Transition strategy
1.3 Operational applications
1.4 Operational goals
1.4.1 Sensitivity
1.4.2 Receiver selectivity
1.4.3 Spurious response, cross modulation and
        intermodulation
1.4.4 Bearing accuracy
1.5 Assumptions
1.5.1 Field strength
1.5.2 Selectivity
1.5.3 Warning and flags
1.6 Test procedures
1.6.1 Environmental tests
1.6.2 Bench tests
1.6.3 Installed system tests
1.6.4 Operational tests
1.7 Definition of terms
2.0 Automatic direction finding equipment
        performance requirements and test procedures
2.1 General requirements
2.1.1 Airworthiness
2.1.2 Intended function
2.1.3 Federal Communication Commission rules
2.1.4 Fire protection
2.1.5 Operation of controls
2.1.6 Accessibility of controls
2.1.7 Effects of test
2.2 Equipment performance - standard conditions
2.2.1 Tuning resolution
2.2.2 Ground station interoperability
2.2.3 Sensitivity (MCW receiver function)
2.2.4 Sensitivity (CW receiver function)
2.2.5 Bearing accuracy (ADF function)
2.2.6 Station passage (ADF function)
2.2.7 Audio frequency response
2.2.8 Audio output level variation with load impedance
2.2.9 Distortion
2.2.10 AGC characteristics
2.2.11 Receiver selectivity (MCW receiver function)
2.2.12 Receiver selectivity (ADF function)
2.2.13 Spurious response
2.2.14 Cross modulation
2.2.15 Intermodulation
2.2.16 Direction finder operation with beat frequency
        oscillator
2.3 Equipment performance - environmental conditions
2.3.1 Temperature and altitude tests
2.3.2 Temperature variation test
2.3.3 Humidity test
2.3.4 Shock tests
2.3.5 Vibration tests
2.3.6 Explosion test
2.3.7 Waterproofness test
2.3.8 Fluids susceptibility tests
2.3.9 Sand and dust test
2.3.10 Fungus resistance test
2.3.11 Salt spray test
2.3.12 Magnetic effect test
2.3.13 Power input tests
2.3.14 Voltage spike conducted test
2.3.15 Audio frequency conducted susceptibility test
2.3.16 Induced signal susceptibility test
2.3.17 Radio frequency susceptibility test
2.3.18 Emission of radio frequency energy test
2.4 Equipment test procedures
2.4.1 Definitions of terms and conditions of test
2.4.2 Detailed test procedures
3.0 Installed equipment performance
3.1 Test conditions
3.1.1 Power input
3.1.2 Associated equipment
3.1.3 Environment
3.1.4 Adjustment of equipment
3.1.5 Warm-up period
3.2 Equipment installation
3.2.1 Equipment accessibility
3.2.2 Display visibility
3.2.3 Interference effects
3.2.4 Dynamic response during maneuvers
3.2.5 Inadvertent turnoff
3.2.6 Aircraft power source
3.3 Minimum installed equipment performance
3.3.1 Controls and displays
3.3.2 Audio reception
3.3.3 Bearing accuracy
4.0 Operational characteristics
4.1 Required operational characteristics
4.1.1 Power input
4.1.2 Equipment operating modes
4.2 Test procedures for operational characteristics
4.2.1 Power input
4.2.2 Equipment operating modes
Membership

Defines operational goals and applications and recommends standards and test procedures for airborne automatic direction finding equipment.