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RTCA DO-281
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RTCA DO-281 Revision C, September 20, 2018 Minimum Operational Performance Standards (MOPS) for Aircraft VDL Mode 2 Physical Link and Network Layer
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Description / Abstract:
PURPOSE AND SCOPE
Introduction
This document contains the Minimum Operational Performance Standards (MOPS) and test procedures for aircraft Very High Frequency (VHF) Digital Link (VDL) Mode 2 physical, link and network layer protocol components which comprise an avionics transmitter/receiver (transceiver) function intended to be used for Air/Ground (A/G) data communications. This document is designed so that equipment certified to it will be compatible with the relevant Minimum Aviation System Performance Standards (MASPS) in RTCA DO-224D, Signal-In-Space MASPS For Advanced VHF Digital Data Communications Including Compatibility with Digital Voice Techniques, and with International Civil Aviation Organization (ICAO) Doc 9776, Manual on VHF Digital Link (VDL) Mode 2, which is also known as the VDL Mode 2 Technical Manual. Additional information on VDL Mode 2 is contained in ARINC Specification 631 and ARINC Characteristics 750 and 758.
Compliance with this MOPS is one means of assuring that the VDL Mode 2 equipment will function satisfactorily under all conditions normally encountered in air traffic services communications and that data formats will be compatible with the Aeronautical Telecommunication Network (ATN). These standards specify characteristics useful to designers, manufacturers, installers, and users of the VDL Mode 2 A/G communications system equipment. This document is organized with the following order and format:
• Section 1 describes the purpose and scope.
• Section 2 describes the minimum operational performance standards for:
- general design requirements
- standard conditions
- environmental conditions
- equipment test procedures
• Section 3 describes the installed equipment tests.
• Section 4 describes the operational tests.
Appendix A contains a list of acronyms used in this document.
Appendix B provides a correlation matrix between the test procedures of Section 2.4 and the VDL Mode 2 system level requirements given in RTCA DO-224D, and the equipment architecture classes defined in Section 1.3. This appendix is normative in the sense that it specifically identifies which requirements make up the minimum set for the standard classes of equipment.
Appendix C provides the analysis that establishes the equivalency between the Frame Error Rate and the bit error rate. This appendix provides the basis for the use of either bit error rate or frame error rate in the verification procedures of Section 2.4.
Appendix D defines the minimum functionality of the Data/Management Interface for Class Y and Class Z architectures. This functionality is described at a high level. No protocol details (i.e., bit definition, data rate, physical layer details, etc.) for the Data/Management Interface are given in this document. Such a standardized interface is the Aviation VHF Link Control (AVLC) Simple Interface Protocol (ASIP) described in Attachment 10 to ARINC Characteristic 750.
Appendix E describes the differences between RTCA DO-281C and EUROCAE ED-92C.
Appendix F contains a DO-281 change suggestion form.
Introduction
This document contains the Minimum Operational Performance Standards (MOPS) and test procedures for aircraft Very High Frequency (VHF) Digital Link (VDL) Mode 2 physical, link and network layer protocol components which comprise an avionics transmitter/receiver (transceiver) function intended to be used for Air/Ground (A/G) data communications. This document is designed so that equipment certified to it will be compatible with the relevant Minimum Aviation System Performance Standards (MASPS) in RTCA DO-224D, Signal-In-Space MASPS For Advanced VHF Digital Data Communications Including Compatibility with Digital Voice Techniques, and with International Civil Aviation Organization (ICAO) Doc 9776, Manual on VHF Digital Link (VDL) Mode 2, which is also known as the VDL Mode 2 Technical Manual. Additional information on VDL Mode 2 is contained in ARINC Specification 631 and ARINC Characteristics 750 and 758.
Compliance with this MOPS is one means of assuring that the VDL Mode 2 equipment will function satisfactorily under all conditions normally encountered in air traffic services communications and that data formats will be compatible with the Aeronautical Telecommunication Network (ATN). These standards specify characteristics useful to designers, manufacturers, installers, and users of the VDL Mode 2 A/G communications system equipment. This document is organized with the following order and format:
• Section 1 describes the purpose and scope.
• Section 2 describes the minimum operational performance standards for:
- general design requirements
- standard conditions
- environmental conditions
- equipment test procedures
• Section 3 describes the installed equipment tests.
• Section 4 describes the operational tests.
Appendix A contains a list of acronyms used in this document.
Appendix B provides a correlation matrix between the test procedures of Section 2.4 and the VDL Mode 2 system level requirements given in RTCA DO-224D, and the equipment architecture classes defined in Section 1.3. This appendix is normative in the sense that it specifically identifies which requirements make up the minimum set for the standard classes of equipment.
Appendix C provides the analysis that establishes the equivalency between the Frame Error Rate and the bit error rate. This appendix provides the basis for the use of either bit error rate or frame error rate in the verification procedures of Section 2.4.
Appendix D defines the minimum functionality of the Data/Management Interface for Class Y and Class Z architectures. This functionality is described at a high level. No protocol details (i.e., bit definition, data rate, physical layer details, etc.) for the Data/Management Interface are given in this document. Such a standardized interface is the Aviation VHF Link Control (AVLC) Simple Interface Protocol (ASIP) described in Attachment 10 to ARINC Characteristic 750.
Appendix E describes the differences between RTCA DO-281C and EUROCAE ED-92C.
Appendix F contains a DO-281 change suggestion form.