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SIST EN 302 842-2 V1.1.1:2006

(Main)

Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer

Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer

The present document provides part 2 of the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1].
NOTE: In clause 5.1.4, Tertiary time, as described by the ICAO VDL4 Technical Manual [1], has not been included as a requirement in the present document due to the opinion of the ETSI Working Group that insufficient evidence was available to be able to verify correct operation of a "floating network" of stations operating on tertiary time. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [13].
The VDL Mode 4 system provides digital communication exchanges between aircraft and ground based systems and other aircraft supporting surveillance and communication applications. The supported modes of communication include:
• broadcast and point-to-point communication;
• broadcast services including Automatic Dependent Surveillance - Broadcast (ADS-B), Traffic Information Service - Broadcast (TIS-B), Flight Information Service - Broadcast (FIS-B) capabilities and GNSS Augmentation Service - Broadcast (GNS-B);
• air-air and ground-air services;
• operation without ground infrastructure.
VDL Mode 4 is designed to be an Air/Ground subsystem of the Aeronautical Telecommunication Network (ATN) (see ICAO ATN SARPs [8]) using the AM(R)S band and it is organized according to the Open Systems Interconnection (OSI) model (defined by ISO). It provides reliable sub network services to the ATN system. Other networks can also be supported but have not been the focus of the present document. The present document is derived from the standards and specifications in:
• ICAO VDL4 Technical Manual [1] produced under the auspices of the International Civil Aviation Organization (ICAO).
• Other relevant standards as defined in clause 2.
It is envisaged that manufacturers may provide equipment supporting:
• broadcast services only;
• point-to-point services only;
• both broadcast and point-to-point services.
EN 302 842-1 [4] deals with tests of the physical layer. The present document defines the core link layer requirements for the VDL Mode 4 mobile station necessary to support all types of equipment. This includes a simple position broadcast functionality.
The present document deals with tests of the link layer sufficient to support core link layer functionality, and it also includes requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document does not address requirements for the full ADS-B message set, or for other broadcast applications that can be supported by the VDL Mode 4 equipment. These are covered by EN 302 842-3 [9].
Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in EN 302 842-4 [10]. EN 302 842-4 [10] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ICAO ATN SARPs [8].

Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) – Radijska oprema za digitalno povezavo VHF (VDL) zrak-tla in zrak-zrak, 4. način – Tehnične karakteristike in merilne metode za aeronavtično mobilno (letalsko) opremo – 2. del: Splošni opis in plast za podatkovne povezave

General Information

Status
Published
Publication Date
28-Feb-2006
ICS
33.060.99 - Other equipment for radiocommunications
33.100.01 - Electromagnetic compatibility in general
49.090 - On-board equipment and instruments
Technical Committee
SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2006
Due Date
01-Mar-2006
Completion Date
01-Mar-2006
Mandate
M/318
Ref Project
ETSI EN 302 842-2 V1.1.1 (2005-05) - Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer
SIST EN 302 842-2 V1.1.1:2006SIST EN 302 842-2 V1.1.1:2006
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SIST EN 302 842-2 V1.1.1:2006
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SLOVENSKI STANDARD
01-marec-2006
(OHNWURPDJQHWQD]GUXåOMLYRVWLQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP (50 ±
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Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and
air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods
of measurement for aeronautical mobile (airborne) equipment; Part 2: General
description and data link layer
Ta slovenski standard je istoveten z: EN 302 842-2 Version 1.1.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
49.090 2SUHPDLQLQVWUXPHQWLY On-board equipment and
]UDþQLKLQYHVROMVNLKSORYLOLK instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI EN 302 842-2 V1.1.1 (2005-07)
European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment;
Technical characteristics and
methods of measurement
for aeronautical mobile (airborne) equipment;
Part 2: General description and data link layer

2 ETSI EN 302 842-2 V1.1.1 (2005-07)

Reference
DEN/ERM-TG25-016-5-2
Keywords
aeronautical, digital, radio, testing, VHF
ETSI
650 Route des Lucioles
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Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
Individual copies of the present document can be downloaded from:
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The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
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within ETSI Secretariat.
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2005.
All rights reserved.
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DECT , PLUGTESTS and UMTS are Trade Marks of ETSI registered for the benefit of its Members.
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ETSI
3 ETSI EN 302 842-2 V1.1.1 (2005-07)
Contents
Intellectual Property Rights.8
Foreword.8
Introduction .9
1 Scope.10
2 References.12
3 Definitions and abbreviations.13
3.1 Definitions.13
3.1.1 Basic reference model definitions.13
3.1.2 Service conventions definitions .13
3.1.3 General definitions.13
3.1.4 Definition of bit order.16
3.2 Abbreviations.16
4 General description of VDL Mode 4 mobile station link layer.18
4.1 General.18
4.1.1 Overview of VDL Mode 4.18
4.1.2 Relationship to OSI reference model.18
4.1.3 VDL Mode 4 services .20
4.1.4 ADS-B function.20
4.1.5 Operational scenarios.21
4.1.6 VDL Mode 4 fundamentals .21
4.1.7 Possible configuration of airborne equipment .22
4.1.8 Classes of equipment .24
4.1.9 Transceiver cross-links.24
4.1.10 Overall structure of specifications for VDL Mode 4 .24
4.1.11 Equipment performance verification .26
5 Minimum performance specification under standard test conditions.27
5.1 MAC sublayer.27
5.1.1 Services.27
5.1.2 MAC sublayer services.27
5.1.3 MAC sublayer parameters .27
5.1.3.1 General.27
5.1.3.2 Parameter M1 (number of slots per superframe).28
5.1.3.3 Parameter M2_inc and M2_limit (MAC layer control parameters for network entry) .28
5.1.3.4 Inspection of m2 filter following transceiver failure.28
5.1.4 Time synchronization.28
5.1.4.1 Primary.28
5.1.4.2 Secondary.29
5.1.4.3 Alignment to UTC second .29
5.1.4.4 Data quality level.29
5.1.5 Slot idle/busy notification.29
5.1.5.1 Slot idle detection.29
5.1.5.2 Slot busy detection .29
5.1.5.3 Slot occupied detection .30
5.1.5.4 Signal level indication.30
5.1.6 Transmission processing.30
5.1.7 Received transmission processing .30
5.2 VSS sublayer.30
5.2.1 Services.30
5.2.1a Multiple access.30
5.2.1.1 Error detection.31
5.2.1.2 Channel congestion.31
5.2.2 Burst format.31
5.2.2.1 VSS burst structure.31
ETSI
4 ETSI EN 302 842-2 V1.1.1 (2005-07)
5.2.2.2 Version number.32
5.2.2.3 Source address.32
5.2.2.4 Message ID.32
5.2.2.5 Information field.32
5.2.2.6 Reservation fields.33
5.2.2.7 Autonomous/directed flag.33
5.2.3 VSS sublayer parameters .34
5.2.3.1 General.34
5.2.3.2 Parameter VS1 (number of ground quarantined slots) .34
5.2.3.3 Parameter VS2 (minimum CCI performance).35
5.2.3.4 Parameter VS4 (quarantine slot re-use range).35
5.2.3.5 Parameter VS5 (maximum burst length).35
5.2.4 VSS quality of service parameters.35
5.2.4.1 General.35
5.2.4.2 Parameter Q1 (priority) .36
5.2.4.3 Parameters Q2a to Q2d (slot selection range constraint for level n) .36
5.2.4.4 Parameter Q3 (replace queued data) .37
5.2.4.5 Parameter Q4 (number of available slots).37
5.2.5 Received transmission processing .37
5.2.6 Reserved access protocol specification.38
5.2.6.1 Reservation table.38
5.2.6.2 Selecting slots for transmission or reservation.38
5.2.6.3 Reserved transmissions.39
5.2.6.4 Reservation conflicts.40
5.2.6.5 Transmission conflicts for mobile stations.40
5.2.7 Random access protocol specification .41
5.2.7.1 General.41
5.2.7.2 Random access parameters.41
5.2.7.3 Random access procedures.43
5.2.8 Void.43
5.2.9 Null reservation protocol specification.43
5.2.9.1 Null reservation burst format .43
5.2.10 Periodic broadcast protocol specification .44
5.2.10.1 Periodic broadcast reservation burst format.44
5.2.10.2 Periodic broadcast timers.44
5.2.10.3 Periodic broadcast parameters.45
5.2.10.4 Periodic broadcast reception procedures.46
5.2.10.5 Periodic broadcast transmission procedures.47
5.2.11 Incremental broadcast protocol specification .49
5.2.11.1 Incremental broadcast reservation burst format .49
5.2.11.2 Incremental broadcast parameters.49
5.2.11.3 Incremental broadcast reception procedures .50
5.2.11.4 Incremental broadcast transmission procedures.50
5.2.12 Combined periodic broadcast and incremental broadcast protocol specification .50
5.2.12.1 Combined periodic broadcast and incremental broadcast reservation burst.50
5.2.13 Big negative dither (BND) broadcast protocol specifications .51
5.2.13.1 BND reservation burst format.51
5.2.13.2 BND broadcast parameters.51
5.2.13.3 BND broadcast reception procedures.52
5.2.14 Unicast request protocol specification .52
5.2.14.1 Unicast request reservation burst format.52
5.2.14.2 Unicast request reception procedures.53
5.2.14.3 Slot selection criteria for unicast request with sdf = 1 .53
5.2.15 Information transfer request protocol specification .53
5.2.15.1 Information transfer request reservation burst format.53
5.2.15.2 Information transfer request reception procedures.54
5.2.16 Directed request protocol specification.54
5.2.16.1 Directed request reservation burst format .54
5.2.16.2 Directed request parameters.58
5.2.16.3 Directed request reception procedures .58
5.2.16.4 Directed request transmission procedures.59
5.2.17 Block reservation protocols specification.60
ETSI
5 ETSI EN 302 842-2 V1.1.1 (2005-07)
5.2.17.1 Superframe block reservation burst format .60
5.2.17.2 Second frame block reservation burst format.61
5.2.17.3 Superframe block reservation parameters .62
5.2.17.4 Superframe block reservation reception procedures .62
5.2.17.5 Second frame block reservation parameters.64
5.2.17.6 Second frame block reservation reception procedures.64
5.2.17.7 Void.65
5.2.17.7a Procedures for responding to a rebroadcast request for superframe block reservation .65
5.2.18 Response protocol specification .65
5.2.18.1 Response burst format.65
5.2.19 General request protocol specification.65
5.2.19.1 General request burst format.65
5.2.19.2 General request procedures .66
5.2.20 General response protocol specification .67
5.2.20.1 General response burst format.67
5.2.20.2 General response procedures.68
5.3 DLS sublayer.68
5.3.1 Services.68
5.3.1.1 General.68
5.3.1.2 Data transfer.68
5.3.1.3 Station address encoding.69
5.3.1.4 DLS burst formats.70
5.3.2 DLS system parameters.71
5.3.2.1 Parameter ND4 (maximum length of a UDATA burst) .71
5.3.3 DLS procedures.71
5.3.3.1 Broadcast.71
5.3.3.2 DLS not supported.71
5.3.3.3 User data packet reception .71
5.3.3.4 CTRL DLPDU.72
5.4 Link Management Entity (LME) sublayer .72
5.4.1 Services.72
5.4.2 Synchronization burst format.72
5.4.2.1 General.72
5.4.2.2 Fixed and variable data fields.72
5.4.2.3 Fixed data field format .73
5.4.2.4 Variable data field format .76
5.4.2.5 Synchronization burst request .76
5.4.2.6 Broadcast link management burst .76
5.4.3 Control (CTRL) parameter formats .77
5.4.3.1 Encoding.77
5.4.3.2 VDL Mode 4 parameter identification .77
5.4.3.3 Ground-initiated modification parameters .78
5.4.3.4 Ground-initiated information parameters.80
5.4.4 LME procedures.82
5.4.4.1 Synchronization burst procedures .82
5.4.4.2 Peer Entity Contact Table (PECT).84
5.4.4.3 Network entry protocol specifications .85
5.4.5 Additional material for ADS-B applications .90
5.4.5.1 Information field formats.90
5.4.5.2 ADS-B request format.91
5.5 Void.91
5.6 Definitions for Compact Position Reporting .91
5.6.1 Introduction.91
5.6.2 Parameter symbols, data types, constants and variables .91
5.6.2.1 Parameter symbols.91
5.6.2.2 Data types.92
5.6.2.3 Constants.92
5.6.2.4 Variables.92
5.6.2.5 Functions.93
5.6.2.6 Patch constants.94
5.6.3 Fixed data field position encoding.96
5.6.3.1 General.96
ETSI
6 ETSI EN 302 842-2 V1.1.1 (2005-07)
5.6.3.2 Input parameters.96
5.6.3.3 Calculations.96
5.6.4 Fixed data field position local decoding .97
5.6.4.1 General.97
5.6.4.2 Input parameters.97
5.6.4.3 Calculations.97
5.6.5 Fixed data field position global decoding.98
5.6.5.1 General.98
5.6.5.2 Input parameters.98
5.6.5.3 Transition level straddling.99
5.6.5.4 Calculations.99
5.6.6 Position Report Processing .100
5.6.6.1 Services.100
5.6.6.2 Position report parameters.100
5.6.6.3 Position report processing procedures.101
6 General design requirements.103
6.1 Controls and indicators.103
6.2 Warm up.103
6.3 Airworthiness.103
6.4 Intended function.103
6.5 International Telecommunications Union regulations.103
6.6 Fire protection.103
6.7 Operation of controls.103
6.8 Accessibility of controls.103
6.9 Effects of tests .103
6.10 Failure of the VDL Mode 4 equipment .103
6.11 Software management.103
6.12 Transceiver configuration.103
6.13 Provision for multiple redundant VDL4 transceivers.104
6.14 Reception capability.104
6.15 Transmission capability.104
6.16 Monitoring of proper operation .104
6.17 Power-up self test .104
7 Protocol test procedures.104
7.1 General.104
7.1.1 Input voltage.104
7.1.2 Power input frequency.104
7.1.3 Adjustment of equipment.104
7.1.4 Equipment configuration.104
7.1.5 Test equipment precautions .105
7.1.6 Ambient conditions.105
7.1.7 Connected loads.105
7.2 Required test rig .105
7.3 Protocol test-suite description methodology .107
7.4 Detailed protocol test procedures .108
7.4.1 Test-suite overview.108
7.4.2 Declarations.115
7.4.3 Constraints.115
7.4.3.1 Abbreviations.115
7.4.3.1.1 Subfield mnemonics.115
7.4.3.1.2 Special characters used in the subfield definitions .116
7.4.3.1.3 Station addresses and positions .116
7.4.3.1.4 Tables of values for use in CPR test cases .117
7.4.3.1.5 Tables of values for use in content checking test cases .129
7.4.3.1.6 VDL4 burst formats.132
7.4.3.2 Test cases.154
7.4.3.2.1 Test case macros.155
7.4.3.2.2 Test case descriptions .157
Annex A (informative): Cross reference matrix .376
ETSI
7 ETSI EN 302 842-2 V1.1.1 (2005-07)
Annex B (informative): Description of ISO/IEC 9646 test methodology .393
B.1 Overview of the structure of the ISO/IEC 9646 test-suites.393
B.2 The test case description.393
B.3 The queue action .395
B.4 The repeat construct .395
B.5 Macro definitions.396
B.6 Test case naming.396
Annex C (informative): Bibliography.397
History .403

ETSI
8 ETSI EN 302 842-2 V1.1.1 (2005-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document is part 2 of a multi-part deliverable covering the VHF air-ground and air-air Digital Link (VDL)
Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne)
equipment, as identified below:
Part 1: "Physical layer";
Part 2: "General description and data link layer";
Part 3: "Additional broadcast aspects";
Part 4: "Point-to-point functions".
The present document is accompanied by an equivalent ground-based standard, EN 301 842 [13] parts 1 to 4, covering
the VHF air-ground Data Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement
for ground-based equipment.
NOTE: Minimum Operational Performance Specifications (MOPS) are also being developed for VDL Mode 4.
EUROCAE have previously published Interim MOPS for VDL Mode 4 (see bibliography) which are a
sub set of EN 302 842-1, 2, 3 and 4. EN 302 842-1, 2, 3 and 4 complies with the requirements of CEC
Mandate M/318.
National transposition dates
Date of adoption of this EN: 22 July 2005
Date of latest announcement of this EN (doa): 31 October 2005
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 April 2006
Date of withdrawal of any conflicting National Standard (dow): 30 April 2006

ETSI
9 ETSI EN 302 842-2 V1.1.1 (2005-07)
Introduction
The present document states the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4
aeronautical mobile (airborne) radio transmitters, transcei
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SIST
SIST EN 302 842-1 V1.1.1:2006(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 1: Physical layer
ETSI EN 302 842-1 V1.1.1 (2005-05)

The present document provides part 1 of the technical specifications, and means of testing compliance, for Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2].
The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1]. NOTE 1: In clause 6.1.12 the requirement is more stringent than required in ICAO VDL SARPs [2]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [8].
The VDL Mode 4 system provides digital communication exchanges between aircraft and ground-based systems and other aircraft supporting surveillance and communication applications. The supported modes of communication include:
• broadcast and point-to-point communication;
• broadcast services including Automatic Dependent Surveillance - Broadcast (ADS-B), Traffic Information Service - Broadcast (TIS-B) and Flight Information Service - Broadcast (FIS-B) capabilities;
• air-air and ground-air services;
• operation without ground infrastructure.
The present document is derived from the specifications:
• ICAO VDL4 Technical Manual [1] and ICAO VDL SARPs [2] produced under the auspices of the International Civil Aviation Organization (ICAO).
• Other relevant standards as defined in clause 2.
It is envisaged that manufacturers may provide equipment supporting:
• broadcast services only;
• point-to-point services only;
• both broadcast and point-to-point services.
The present document deals with tests of the physical layer necessary to support all types of equipment.
The present document includes:
• References, definitions, abbreviations and symbols are provided in clauses 2 and 3.
• Clause 4 provides a general description and architecture of VDL Mode 4.
• Clause 5 provides functional specifications applicable to the physical layer including transmitter/receiver requirements and the modulation scheme.
• Clause 6 provides VDL Mode 4 equipment requirements.
• Clause 7 provides general design requirements.
• Clause 8 provides environmental test requirements.
• Clause 9 provides detailed test procedures for the physical layer.
• Clause 10 provides installed equipment requirements.
The full physical layer tests are provided which correspond closely to the standard set of tests used for other VDL systems.
NOTE 2: Flight tests are defined in EN 302 842-2 [7].
Mandating and recommendation phrases
a) "Shall"
- The use of the word "Shall" indicates a mandated criterion; e.g. compliance with the particular procedure or specification is mandatory and no alternative may be applied.
b) "Should"
- The use of the word "Should" (and phrases such as "It is recommended that...", etc.) indicate that though the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or criteria may be applied, provided that the manufacturer, installer or tester can provide information or data to adequately support and justify the alternative.

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SIST
SIST EN 302 842-3 V1.1.1:2006(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects
ETSI EN 302 842-3 V1.1.1 (2005-05)

The present document provides part 3 of the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment.
The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [9]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see
EN 302 842-2 [5] clause 1). EN 302 842-1 [4] deals with tests of the physical layer. EN 302 842-2 [5] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 mobile transceiver supporting a full Automatic Dependent Surveillance - Broadcast (ADS-B) capability and,
optionally, the additional functionality of either, or a combination of, the following services:
• Traffic Information Service - Broadcast (TIS-B);
• Flight Information Service - Broadcast (FIS-B);
• GNSS Augmentation Service - Broadcast (GNS-B).
The TIS-B, FIS-B, or GNS-B reception processing functionality in the airborne equipment is expected to be provided by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B message reception, the minimum functionality demanded of a basic VDL Mode 4 airborne transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to pass to the TIS-B, FIS-B or GNS-B processor, all TIS-B, FIS-B or GNS-B messages received. As the measured values of equipment performance may be a function of the method of measurement, standard test conditions and methods of test are recommended in the present document.

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SIST EN 301 842-3 V1.1.1:2006(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Additional broadcast aspects
ETSI EN 301 842-3 V1.1.1 (2005-02)

The present document provides part 3 of the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [10]. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [10] and VDL Mode 4 Technical Manual (TM) [1]. Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is EN 302 842 [9]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see EN 301 842-2 [5] clause 1). EN 301 842-1 [4] deals with tests of the physical layer. EN 301 842-2 [5] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 ground-based transceiver supporting a full Automatic Dependent Surveillance - Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services:
• Traffic Information Service - Broadcast (TIS-B);
• Flight Information Service - Broadcast (FIS-B);
• GNSS Augmentation Service - Broadcast (GNS-B).
The TIS-B, FIS-B, or GNS-B functionality in the ground-based equipment is expected to be provided by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B, the minimum functionality demanded of a basic VDL Mode 4 ground-based transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to receive, from the TIS-B, FIS-B or GNS-B processor, all messages to be transmitted, and to transmit them. In the case of FIS-B there is an additional requirement to receive report request messages (from other VDL4 stations) and to pass those messages to the FIS-B processor. It should be noted that the specifications for TIS-B, FIS-B and GNS-B in the present document represent a first step towards defining these applications, based on the work carried out as part of the NUP and MEDUP Programmes, and changes to the specifications for these services may therefore occur in the future.

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SIST EN 302 842-4 V1.1.1:2006(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 4: Point-to-point functions
ETSI EN 302 842-4 V1.1.1 (2005-05)

The present document provides part 4 of the technical specifications for Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and as applicable also ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [4]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see EN 302 842-2 [6], clause 1). EN 302 842-1 [5] deals with tests of the physical layer, EN 302 842-2 [6] deals with core link layer functionality and EN 302 842-3 [7] with additional broadcast functionality. The present document deals with tests of the datalink layer (DLS) and the link layer sufficient to support point-to-point functionality. Note that, as described in EN 302 842-2 [6], a system supporting point-to-point functionality is required to conform to EN 302 842-1 [5], EN 302 842-2 [6] and the specification in the present document.
The present document includes:
• references, definitions and abbreviations are provided in clauses 2 and 3;
• clause 4 describes the VDL Mode 4 mobile station point-to-point functions;
• clause 5 performance specifications for the VDL Mode 4 mobile station;
• clause 6 provides general design requirements;
• clause 7 provides protocol tests for the point-to-point functions of the system;
• a document history is contained in clause 8;
• annex A provides a detailed cross-reference to the relevant requirements contained in ICAO VDL4 Technical Manual [1].
Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all aspects of functionality. The approach used is to provide detailed tests for the core point-to-point functionality and to provide tests of those remaining requirements which, if wrongly implemented, could cause a deterioration in the service offered by other VDL Mode 4 stations.
Mandating and Recommendation Phrases
a) "Shall":
- The use of the word "Shall" indicates a mandated criterion; i.e. compliance with the particular procedure or specification is mandatory and no alternative may be applied.
b) "Should":
- The use of the word "Should" (and phrases such as "It is recommended that...", etc.) indicates that though the procedure or criterion is regarded as the preferred option, alternative procedures, specifications or criteria may be applied, provided that the manufacturer, installer or tester can provide information or data to adequately support and justify the alternative.

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SIST EN 302 842-1 V1.2.1:2007(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 1: Physical layer
ETSI EN 302 842-1 V1.2.1 (2006-12)

The present document applies to the following radio equipment types:                                                            - Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present technical document provides part 1 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1] and with the SES 552/2004 interoperability Regulation [9]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [10]. The VDL Mode 4 system provides digital communication exchanges between aircraft and ground-based systems and other aircraft supporting surveillance and communication applications. The supported modes of communication include:-broadcast and point-to-point communication; - broadcast services including Automatic Dependent Surveillance - Broadcast (ADS-B), Traffic Information Service - Broadcast (TIS-B) and Flight Information Service - Broadcast (FIS-B) capabilities;- air-air and ground-air services; - operation without ground infrastructure. The present document is derived from the specifications: -ICAO VDL4 Technical Manual [1] and ICAO VDL SARPs [2] produced under the auspices of the International Civil Aviation Organization (ICAO). -Other relevant standards as defined in clause 2. It is envisaged that manufacturers may provide equipment supporting: -broadcast services only; -point-to-point services only; -both broadcast and point-to-point services. The present document deals with tests of the physical layer necessary to support all types of equipment. The present document includes: -clause 2 provides references to relevant documents; -clause 3 provides general definitions, abbreviations and symbols used; -clause 4 provides a general description and architecture of VDL Mode 4; -clause 5 provides functional specifications applicable to the physical layer including transmitter/receiver requirements and the modulation scheme.

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SIST EN 302 842-4 V1.2.1:2007(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 4: Point-to-point functions
ETSI EN 302 842-4 V1.2.1 (2006-12)

The present document applies to the following radio equipment types: -Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present document provides part 4 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1] and with the SES 552/2004 interoperability Regulation [9]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and as applicable also ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [4]. A description of the scope of the VDL Mode 4 system is provided in part 2 of EN 302 842-2 [6], clause 1. EN 302 842-1 [5] deals with tests of the physical layer, EN 302 842-2 [6] deals with core link layer functionality and EN 302 842-3 [7] with additional broadcast functionality. The present document deals with tests of the datalink layer (DLS) and the link layer sufficient to support point-to-point functionality. Note that, as described in EN 302 842-2 [6], a system supporting point-to-point functionality is required to conform to EN 302 842-1 [5], EN 302 842-2 [6] and the specification in the present document. The present document includes: -clause 2 provides references to relevant documents; -clause 3 provides general definitions, abbreviations and symbols used; -clause 4 describes the VDL Mode 4 mobile station point-to-point functions; -clause 5 provides performance specifications for the VDL Mode 4 mobile station; -clause 6 provides general design requirements; -clause 7 provides protocol tests for the point-to-point functions of the system; -annex A provides a detailed cross-reference to the relevant requirements contained in ICAO VDL4 Technical Manual [1]; -annex B provides a description of compliance with the SES 552/2004 Regulation [9]; -annex C provides a bibliography; -a document history. Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all aspects of functionality. The approach used is to provide detailed tests for the core point-to-point functionality and to provide tests of those remaining requirements which, if wrongly implemented, could cause a deterioration in the service offered by other VDL Mode 4 stations.

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SIST EN 302 842-2 V1.2.1:2007(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 2: General description and data link layer
ETSI EN 302 842-2 V1.2.1 (2006-12)

The present document applies to the following radio equipment types: - Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs [2]. The present document provides part 2 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1] and with the SES 552/2004 interoperability Regulation. NOTE: In clause 5.1.4, Tertiary time, as described by the ICAO VDL4 Technical Manual [1], has not been included as a requirement in the present document due to the opinion of the ETSI Working Group that insufficient evidence was available to be able to verify correct operation of a "floating network" of stations operating on tertiary time. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [15]. The VDL Mode 4 system provides digital communication exchanges between aircraft and ground based systems and other aircraft supporting surveillance and communication applications. The supported modes of communication include: - broadcast and point-to-point communication; -broadcast services including Automatic Dependent Surveillance - Broadcast (ADS-B), Traffic Information Service - Broadcast (TIS-B), Flight Information Service - Broadcast (FIS-B) capabilities and GNSS Augmentation Service - Broadcast (GNS-B); -air-air and ground-air services; -operation without ground infrastructure. VDL Mode 4 is designed to be an Air/Ground subsystem of the Aeronautical Telecommunication Network (ATN) (see ICAO ATN SARPs [8]) using the AM(R)S band and it is organized according to the Open Systems Interconnection (OSI) model (defined by ISO). It provides reliable sub network services to the ATN system. Other networks can also be supported but have not been the focus of the present document. The present document is derived from the standards and specifications in: -ICAO VDL4 Technical Manual [1] produced under the auspices of the International Civil Aviation Organization (ICAO).- Other relevant standards as defined in clause 2. It is envisaged that manufacturers may provide equipment supporting:- broadcast services only; -point-to-point services only; -both broadcast and point-to-point services.

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SIST EN 302 842-3 V1.2.1:2007(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground and air-air Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for aeronautical mobile (airborne) equipment; Part 3: Additional broadcast aspects
ETSI EN 302 842-3 V1.2.1 (2006-12)

The present document applies to the following radio equipment types: -Very High Frequency (VHF) Digital Link (VDL) Mode 4 aeronautical mobile (airborne) radio transmitters, transceivers and receivers for air-ground and air-air communications operating in the VHF band, using Gaussian Filtered Frequency Shift Keying (GFSK) modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VDL SARPs 130 [2]. The present technical document provides part 3 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [2] and ICAO VDL4 Technical Manual [1] and with the SES 552/2004 interoperability Regulation [10]. Manufacturers should note that in future the tuning range for the transmitter may also cover any 25 kHz channel from 112,000 MHz to 117,975 MHz and the receiver(s) may cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The present document applies to "aeronautical mobile (airborne and in some cases ground vehicles)" equipment which will hereinafter be referred to as "mobile" equipment. The scope of the present document is limited to mobile stations. The equivalent specification for ground stations is EN 301 842 [9]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see EN 302 842-2 [5] clause 1). EN 302 842-1 [4] deals with tests of the physical layer. EN 302 842-2 [5] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 mobile transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services: -Traffic Information Service-Broadcast (TIS-B); -Flight Information Service-Broadcast (FIS-B); -GNSS Augmentation Service-Broadcast (GNS-B). The TIS-B, FIS-B, or GNS-B reception processing functionality in the airborne equipment is expected to be provided by a TIS-B, FIS-B or GNS-B processor, which could be contained within the VDL Mode 4 transceiver, but could also be housed in a separate physical unit. Therefore to support TIS-B, FIS-B or GNS-B message reception, the minimum functionality demanded of a basic VDL Mode 4 airborne transceiver unit (i.e. one that does not have a TIS-B, FIS-B or GNS-B processor housed within it) is to pass to the TIS-B, FIS-B or GNS-B processor, all TIS-B, FIS-B or GNS-B messages received. As the measured values of equipment performance may be a function of the method of measurement, standard test conditions and methods of test are recommended in the present document. The present document is organized as follows: -clause 2 provides references to relevant documents; -clause 3 provides general definitions, abbreviations and symbols used; -clause 4 describes the VDL Mode 4 mobile station functionality to support ADS-B, TIS-B, FIS-B and GNS-B; -clause 5 provides performance specifications for the VDL Mode 4 mobile station supporting ADS-B, TIS-B, FIS-B and GNS-B Services; -clause 6 provides general design requirements.

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SIST EN 301 842-3 V1.2.1:2007(Main)
Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Additional broadcast aspects
ETSI EN 301 842-3 V1.2.1 (2006-11)

The present document applies to the following radio equipment types:
Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 118,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [10]. The present document provides part 3 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [10] and VDL Mode 4 Technical Manual (TM) [1] and with the SES 552/2004 interoperability Regulation [12]. Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 117,975 MHz. The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is EN 302 842 [9]. A description of the scope of the VDL Mode 4 system is provided in part 2 of these technical specifications (see EN 301 842-2 [5] clause 1). EN 301 842-1 [4] deals with tests of the physical layer. EN 301 842-2 [5] deals with tests of the link layer sufficient to support broadcast functionality including requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document provides technical specifications for a VDL Mode 4 ground-based transceiver supporting a full Automatic Dependent Surveillance-Broadcast (ADS-B) capability and, optionally, the additional functionality of either, or a combination of, the following services:

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SIST EN ISO 80601-2-70:2026(Main)
Medical electrical equipment - Part 2-70: Particular requirements for basic safety and essential performance of sleep apnoea breathing therapy equipment (ISO 80601-2-70:2025)
EN ISO 80601-2-70:2025

This document is applicable to the basic safety and essential performance of sleep apnoea breathing therapy equipment, hereafter referred to as ME equipment, intended to alleviate the symptoms of patients who suffer from obstructive sleep apnoea by delivering a therapeutic breathing pressure to the respiratory tract of the patient. Sleep apnoea breathing therapy equipment is intended for use in the home healthcare environment by lay operators as well as in professional healthcare institutions.
Sleep apnoea breathing therapy equipment is not considered to utilize a physiologic closed-loop-control system unless it uses a physiological patient variable to adjust the therapy settings.
This document excludes sleep apnoea breathing therapy equipment intended for use with neonates.
This document is applicable to ME equipment or an ME system intended for those patients who are not dependent on artificial ventilation. This document is not applicable to ME equipment or an ME system intended for those patients who are dependent on artificial ventilation such as patients with central sleep apnoea.
This document is also applicable to those accessories intended by their manufacturer to be connected to sleep apnoea breathing therapy equipment, where the characteristics of those accessories can affect the basic safety or essential performance of the sleep apnoea breathing therapy equipment.
Masks and application accessories intended for use during sleep apnoea breathing therapy are additionally addressed by ISO 17510. Refer to Figure AA.1 for items covered further under this document.
If a clause or subclause is specifically intended to be applicable to ME equipment only, or to ME systems only, the title and content of that clause or subclause will say so. If that is not the case, the clause or subclause applies both to ME equipment and to ME systems, as relevant.
Hazards inherent in the intended physiological function of ME equipment or ME systems within the scope of this document are not covered by specific requirements in this document except in 7.2.13 and 8.4.1 of the general standard.
NOTE 2        See also 4.2 of the general standard.
This document does not specify the requirements for:
–    ventilators or accessories intended for critical care ventilators for ventilator-dependent patients, which are given in ISO 80601‑2‑12.
–    ventilators or accessories intended for anaesthetic applications, which are given in ISO 80601-2-13.
–    ventilators or accessories intended for home care ventilators for ventilator-dependent patients, which are given in ISO 80601-2-72.
–    ventilators or accessories intended for emergency and transport, which are given in ISO 80601-2-84.
–    ventilators or accessories intended for home-care ventilatory support, which are given in ISO 80601‑2-79 and ISO 80601‑2‑80.
–    high-frequency ventilators[23], which are given in ISO 80601-2-87.
–    respiratory high flow equipment, which are given in ISO 80601‑2‑90;
NOTE 3      ISO 80601-2-80 ventilatory support equipment can incorporate high-flow therapy operational mode, but such a mode is only for spontaneously breathing patients.
–    user-powered resuscitators, which are given in ISO 10651-4;
–    gas-powered emergency resuscitators, which are given in ISO 10651-5;
–    oxygen therapy constant flow ME equipment; and
–    cuirass or “iron-lung” ventilation equipment.

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