SIST EN 301 841-3 V1.2.1:2015

• Abstract:

  The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift; Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication; exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz).; The scope of the present document is limited to ground based stations.; NOTE 1: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication; Network (ATN) using a band with AM(R)S spectrum allocation.; The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive), article 3.2,; which states that "... radio equipment shall be so constructed that it effectively uses the spectrum allocated to; terrestrial/space radio communications and orbital resources so as to avoid harmful interference".; In addition to the present document, other ENs that specify technical requirements in respect of essential requirements; under other parts of article 3 of the R&TTE Directive may apply to equipment within the scope of the present; document.; NOTE 2: A list of such ENs is included on the web site http://www.newapproach.org.; Compliance with relevant aviation regulations may also be required before equipment within the scope of the present; document can enter into service.

• Status: Published
• Public Enquiry End Date: 29-Apr-2015
• Publication Date: 07-Sep-2015
• ICS: 33.060.99 - Other equipment for radiocommunications
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 09-Jun-2015
• Due Date: 14-Aug-2015
• Completion Date: 08-Sep-2015
• Directive: 1999/5/EC - Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity
  Conflicting Date: 31-Jan-2016
• Mandate: M/405
• Ref Project: ETSI EN 301 841-3 V1.2.1 (2015-04) - VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive

Overview

SIST EN 301 841-3 V1.2.1:2015 specifies the technical characteristics and methods of measurement for very high frequency (VHF) air-ground Digital Link (VDL) Mode 2 ground-based equipment. Developed as a harmonized European standard, this document ensures that VDL Mode 2 radio equipment conforms to the essential requirements of Article 3.2 of the R&TTE Directive (1999/5/EC), specifically addressing effective spectrum usage and the avoidance of harmful interference in aeronautical VHF bands.

The standard applies exclusively to ground-based VHF data communication systems operating between 117.975 MHz and 137.000 MHz with a 25 kHz channel increment, using Differential Eight Phase Shift Keying (D8PSK) modulation. VDL Mode 2 forms a critical part of the Aeronautical Telecommunication Network (ATN), enabling robust digital data exchange between ground stations and aircraft.

Key Topics

Key areas and requirements addressed by SIST EN 301 841-3:

• Frequency spectrum utilization: Ensures efficient and interference-free use of the VHF aviation band.
• Transmitter performance: Covers frequency accuracy, output power, adjacent channel power, spurious emissions, cabinet radiation, intermodulation attenuation, RF power release time, transient behavior, and modulation accuracy.
• Receiver performance: Specifies requirements for sensitivity, co-channel interference, adjacent channel rejection, spurious response rejection (both within and outside the aeronautical band), in-band intermodulation rejection, blocking/desensitization, conducted emissions, and cabinet radiation.
• Testing and measurement: Details relevant conformance test methods for transmitter and receiver parameters, with defined measurement uncertainties to ensure consistent and reliable results.
• Environmental conditions: Requires that equipment must meet all performance criteria under the environmental profile declared by the equipment supplier.

Applications

SIST EN 301 841-3:2015 is essential for:

• Aeronautical ground station equipment manufacturers: Ensuring VDL Mode 2 devices meet regulatory requirements for spectrum efficiency and reduced interference.
• Air navigation service providers (ANSPs): Selecting compliant ground communication equipment for integration into national or regional ATN infrastructures.
• Conformance testing laboratories: Using standardized measurement methods to verify that VHF ground stations fulfill the technical and regulatory specifications.
• Aviation regulatory authorities: Assessing compliance of VHF ground communication equipment before approval for operational deployment.

The document supports interoperability and safety in air-ground digital communications, directly impacting applications like air traffic control messaging, aircraft data link services, and overall airspace management.

Related Standards

When implementing SIST EN 301 841-3 V1.2.1:2015, consider these associated standards:

• EN 301 841-1: Defines the physical layer and MAC sub-layer technical requirements and methods of measurement for VDL Mode 2 ground-based equipment.
• EN 301 841-2: Addresses upper layer protocols and performance for VDL Mode 2.
• ETSI TR 100 028 (all parts): Provides guidance on measurement uncertainties in mobile radio equipment testing.
• R&TTE Directive 1999/5/EC: Sets out essential requirements for radio and telecommunications terminal equipment (now largely superseded by the RED directive for new equipment).
• Relevant national aviation regulations: Additional compliance may be required based on country-specific aviation safety and interoperability standards.

Summary

SIST EN 301 841-3 V1.2.1:2015 is a crucial standard for the deployment and certification of ground-based VHF air-ground Digital Link (VDL) Mode 2 equipment in European aviation. By providing harmonized technical specifications and measurement methods, it ensures safe, reliable, and interference-free operation, fostering efficient communication between aircraft and ground infrastructure over the VHF spectrum.

Draft ETSI EN 301 841-3 V1.2.0 (2014-12)

HARMONIZED EUROPEAN STANDARD
VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement
for ground-based equipment;
Part 3: Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive

2 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)

Reference
REN/ERM-JTFEA-010
Keywords
aeronautical, AM, DSB, radio, testing, VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2014.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 8
4 Technical requirements specifications . 8
4.1 Environmental profile . 8
4.2 Conformance requirements . 8
4.2.1 Transmitter requirements . 8
4.2.1.1 Frequency error . 8
4.2.1.1.1 Requirement . 8
4.2.1.1.2 Conformance . 8
4.2.1.2 Manufacturer's declared output power . 8
4.2.1.2.1 Requirement . 8
4.2.1.2.2 Conformance . 8
4.2.1.3 Adjacent channel power . 9
4.2.1.3.1 Requirement . 9
4.2.1.3.2 Conformance . 9
4.2.1.4 Conducted spurious emissions . 9
4.2.1.4.1 Requirement . 9
4.2.1.4.2 Conformance . 9
4.2.1.5 Cabinet radiation . 9
4.2.1.5.1 Requirement . 9
4.2.1.5.2 Conformance . 9
4.2.1.6 Void. 9
4.2.1.7 Intermodulation attenuation . 9
4.2.1.7.1 Requirements . 9
4.2.1.7.2 Conformance . 9
4.2.1.8 Void. 9
4.2.1.9 RF power release time . 9
4.2.1.9.1 Requirement . 9
4.2.1.9.2 Conformance . 10
4.2.1.10 Transient behaviour of the transmitter . 10
4.2.1.10.1 Receiver to transmitter turn-around time . 10
4.2.1.10.2 Transmitter to receiver turn-around time . 10
4.2.1.11 Modulation Accuracy - Symbol constellation error . 10
4.2.1.11.1 Requirement . 10
4.2.1.11.2 Conformance . 10
4.2.2 Receiver requirements . 10
4.2.2.1 Sensitivity . 10
4.2.2.1.1 Requirement . 10
4.2.2.1.2 Conformance . 10
4.2.2.2 Co-channel interference . 10
4.2.2.2.1 Requirement . 10
4.2.2.2.2 Conformance . 10
4.2.2.3 First adjacent channel rejection . 11
4.2.2.3.1 Requirement . 11
4.2.2.3.2 Conformance . 11
ETSI
4 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 11
4.2.2.4.1 Requirement . 11
4.2.2.4.2 Conformance . 11
4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 11
4.2.2.5.1 Requirement . 11
4.2.2.5.2 Conformance . 11
4.2.2.6 In-band Intermodulation response rejection . 11
4.2.2.6.1 Requirement . 11
4.2.2.6.2 Conformance . 11
4.2.2.7 Blocking or desensitization . 11
4.2.2.7.1 Requirement . 11
4.2.2.7.2 Conformance . 11
4.2.2.8 Conducted spurious emission . 11
4.2.2.8.1 Requirement . 11
4.2.2.8.2 Conformance . 12
4.2.2.9 Cabinet radiation . 12
4.2.2.9.1 Requirement . 12
4.2.2.9.2 Conformance . 12
5 Testing for compliance with technical requirements . 12
5.1 Environmental conditions for testing . 12
5.1.1 Test power source . 12
5.1.2 Normal and extreme test conditions. 12
5.2 Interpretation of the measurement results . 12
5.3 Essential radio test suites . 13
5.3.1 Transmitter test specifications . 13
5.3.1.1 Frequency error . 13
5.3.1.2 Manufacturer's declared output power . 13
5.3.1.3 Adjacent channel power . 13
5.3.1.4 Conducted Spurious emissions . 13
5.3.1.5 Cabinet Radiation . 13
5.3.1.6 Void. 14
5.3.1.7 Inter-modulation attenuation . 14
5.3.1.8 Void. 14
5.3.1.9 RF power release time . 14
5.3.1.10 Transient behaviour of the transmitter . 14
5.3.1.10.1 Receiver to transmitter turn-around time . 14
5.3.1.10.2 Transmitter to receiver turn-around time . 14
5.3.1.11 Modulation accuracy - Symbol constellation error . 14
5.3.2 Receiver test specifications . 14
5.3.2.1 Sensitivity . 14
5.3.2.2 Co-channel interference . 14
5.3.2.3 First Adjacent channel rejection . 14
5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 14
5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 14
5.3.2.6 In-band Intermodulation rejection . 14
5.3.2.7 Blocking or desensitization . 14
5.3.2.8 Conducted spurious emission . 15
5.3.2.9 Cabinet Radiation . 15
Annex A (normative): HS Requirements and conformance Test specifications Table
(HS-RTT) . 16
Annex B (informative): Bibliography . 18
History . 19

ETSI
5 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
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://ipr.etsi.org).
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 draft Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM), and is now submitted for the combined Public Enquiry and Vote
phase of the ETSI standards EN Approval Procedure.
The present document has been produced by ETSI in response to mandate M/405 issued from the European
Commission under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.3].
The title and reference to the present document are intended to be included in the publication in the Official Journal of
the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.2].
The requirements relevant to Directive 1999/5/EC [i.2] are summarized in annex A.
The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement for ground-based equipment, as identified below:
Part 1: "Physical layer and MAC sub-layer";
Part 2: "Upper layers";
Part 3: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive".

National transposition dates
Date of latest announcement of this EN (doa): 3 months after ETSI publication
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 6 months after doa
Date of withdrawal of any conflicting National Standard (dow): 6 months after doa

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "may not", "need", "need not", "will",
"will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms
for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
6 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
1 Scope
The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift
Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication
exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz).
The scope of the present document is limited to ground based stations.
NOTE 1: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication
Network (ATN) using a band with AM(R)S spectrum allocation.
The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive), article 3.2,
which states that ". radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the R&TTE Directive may apply to equipment within the scope of the present
document.
NOTE 2: A list of such ENs is included on the web site http://www.newapproach.org.
Compliance with relevant aviation regulations may also be required before equipment within the scope of the present
document can enter into service.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 841-1 (V1.4.0) (12-2014): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment;
...

HARMONIZED EUROPEAN STANDARD
VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement
for ground-based equipment;
Part 3: Harmonized EN covering the essential requirements
of article 3.2 of the R&TTE Directive

2 ETSI EN 301 841-3 V1.2.1 (2015-04)

Reference
REN/ERM-JTFEA-010
Keywords
aeronautical, AM, DSB, radio, testing, VHF
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2015.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI EN 301 841-3 V1.2.1 (2015-04)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 6
3 Definitions and abbreviations . 7
3.1 Definitions . 7
3.2 Abbreviations . 8
4 Technical requirements specifications . 8
4.1 Environmental profile . 8
4.2 Conformance requirements . 8
4.2.1 Transmitter requirements . 8
4.2.1.1 Frequency error . 8
4.2.1.1.1 Requirement . 8
4.2.1.1.2 Conformance . 8
4.2.1.2 Manufacturer's declared output power . 8
4.2.1.2.1 Requirement . 8
4.2.1.2.2 Conformance . 8
4.2.1.3 Adjacent channel power . 8
4.2.1.3.1 Requirement . 8
4.2.1.3.2 Conformance . 9
4.2.1.4 Conducted spurious emissions . 9
4.2.1.4.1 Requirement . 9
4.2.1.4.2 Conformance . 9
4.2.1.5 Cabinet radiation . 9
4.2.1.5.1 Requirement . 9
4.2.1.5.2 Conformance . 9
4.2.1.6 Void. 9
4.2.1.7 Intermodulation attenuation . 9
4.2.1.7.1 Requirements . 9
4.2.1.7.2 Conformance . 9
4.2.1.8 Void. 9
4.2.1.9 RF power release time . 9
4.2.1.9.1 Requirement . 9
4.2.1.9.2 Conformance . 9
4.2.1.10 Transient behaviour of the transmitter . 9
4.2.1.10.1 Receiver to transmitter turn-around time . 9
4.2.1.10.2 Transmitter to receiver turn-around time . 10
4.2.1.11 Modulation Accuracy - Symbol constellation error . 10
4.2.1.11.1 Requirement . 10
4.2.1.11.2 Conformance . 10
4.2.2 Receiver requirements . 10
4.2.2.1 Sensitivity . 10
4.2.2.1.1 Requirement . 10
4.2.2.1.2 Conformance . 10
4.2.2.2 Co-channel interference . 10
4.2.2.2.1 Requirement . 10
4.2.2.2.2 Conformance . 10
4.2.2.3 First adjacent channel rejection . 10
4.2.2.3.1 Requirement . 10
4.2.2.3.2 Conformance . 10
4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 10
4.2.2.4.1 Requirement . 10
ETSI
4 ETSI EN 301 841-3 V1.2.1 (2015-04)
4.2.2.4.2 Conformance . 10
4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 11
4.2.2.5.1 Requirement . 11
4.2.2.5.2 Conformance . 11
4.2.2.6 In-band Intermodulation response rejection . 11
4.2.2.6.1 Requirement . 11
4.2.2.6.2 Conformance . 11
4.2.2.7 Blocking or desensitization . 11
4.2.2.7.1 Requirement . 11
4.2.2.7.2 Conformance . 11
4.2.2.8 Conducted spurious emission . 11
4.2.2.8.1 Requirement . 11
4.2.2.8.2 Conformance . 11
4.2.2.9 Cabinet radiation . 11
4.2.2.9.1 Requirement . 11
4.2.2.9.2 Conformance . 11
5 Testing for compliance with technical requirements . 11
5.1 Environmental conditions for testing . 11
5.1.1 Test power source . 12
5.1.2 Normal and extreme test conditions. 12
5.2 Interpretation of the measurement results . 12
5.3 Essential radio test suites . 13
5.3.1 Transmitter test specifications . 13
5.3.1.1 Frequency error . 13
5.3.1.2 Manufacturer's declared output power . 13
5.3.1.3 Adjacent channel power . 13
5.3.1.4 Conducted Spurious emissions . 13
5.3.1.5 Cabinet Radiation . 13
5.3.1.6 Void. 13
5.3.1.7 Inter-modulation attenuation . 13
5.3.1.8 Void. 13
5.3.1.9 RF power release time . 13
5.3.1.10 Transient behaviour of the transmitter . 13
5.3.1.10.1 Receiver to transmitter turn-around time . 13
5.3.1.10.2 Transmitter to receiver turn-around time . 13
5.3.1.11 Modulation accuracy - Symbol constellation error . 13
5.3.2 Receiver test specifications . 13
5.3.2.1 Sensitivity . 13
5.3.2.2 Co-channel interference . 13
5.3.2.3 First Adjacent channel rejection . 14
5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 14
5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 14
5.3.2.6 In-band Intermodulation rejection . 14
5.3.2.7 Blocking or desensitization . 14
5.3.2.8 Conducted spurious emission . 14
5.3.2.9 Cabinet Radiation . 14
Annex A (normative): HS Requirements and conformance Test specifications Table (HS-RTT) . 15
Annex B (informative): Bibliography . 17
History . 18

ETSI
5 ETSI EN 301 841-3 V1.2.1 (2015-04)
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://ipr.etsi.org).
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 Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic
compatibility and Radio spectrum Matters (ERM).
The present document has been produced by ETSI in response to mandate M/405 issued from the European
Commission under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.3].
The title and reference to the present document are intended to be included in the publication in the Official Journal of
the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.2].
The requirements relevant to Directive 1999/5/EC [i.2] are summarized in annex A.
The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2;
Technical characteristics and methods of measurement for ground-based equipment, as identified below:
Part 1: "Physical layer and MAC sub-layer";
Part 2: "Upper layers";
Part 3: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive".

National transposition dates
Date of adoption of this EN: 21 April 2015
Date of latest announcement of this EN (doa): 31 July 2015
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 January 2016
Date of withdrawal of any conflicting National Standard (dow): 31 January 2016

Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
6 ETSI EN 301 841-3 V1.2.1 (2015-04)
1 Scope
The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift
Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication
exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz).
The scope of the present document is limited to ground based stations.
NOTE 1: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication
Network (ATN) using a band with AM(R)S spectrum allocation.
The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive), article 3.2,
which states that ". radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the R&TTE Directive may apply to equipment within the scope of the present
document.
NOTE 2: A list of such ENs is included on the web site http://www.newapproach.org.
Compliance with relevant aviation regulations may also be required before equipment within the scope of the present
document can enter into service.
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI EN 301 841-1 (V1.4.1) (04-2015): "VHF air-ground Digital Link (VDL) Mode 2; Technical
characteristics and methods of measurement for ground-based equipment; Part 1: Physical layer
and MAC sub-layer".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version appli
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.KQLþQHVHF air-ground Digital Link (VDL) Mode 2;Technical characteristics and methods of measurement for ground-based equipment;Part 3: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive33.060.99Druga oprema za radijske komunikacijeOther equipment for radiocommunicationsICS:Ta slovenski standard je istoveten z:EN 301 841-3 V1.2.1SIST EN 301 841-3 V1.2.1:2015en,fr,de01-oktober-2015SIST EN 301 841-3 V1.2.1:2015SLOVENSKI
STANDARD
HARMONIZED EUROPEAN STANDARD SIST EN 301 841-3 V1.2.1:2015

ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 2
Reference REN/ERM-JTFEA-010 Keywords aeronautical, AM, DSB, radio, testing, VHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2015. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 301 841-3 V1.2.1:2015

ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 3 Contents Intellectual Property Rights . 5 Foreword . 5 Modal verbs terminology . 5 1 Scope . 6 2 References . 6 2.1 Normative references . 6 2.2 Informative references . 6 3 Definitions and abbreviations . 7 3.1 Definitions . 7 3.2 Abbreviations . 8 4 Technical requirements specifications . 8 4.1 Environmental profile . 8 4.2 Conformance requirements . 8 4.2.1 Transmitter requirements . 8 4.2.1.1 Frequency error . 8 4.2.1.1.1 Requirement . 8 4.2.1.1.2 Conformance . 8 4.2.1.2 Manufacturer's declared output power . 8 4.2.1.2.1 Requirement . 8 4.2.1.2.2 Conformance . 8 4.2.1.3 Adjacent channel power . 8 4.2.1.3.1 Requirement . 8 4.2.1.3.2 Conformance . 9 4.2.1.4 Conducted spurious emissions . 9 4.2.1.4.1 Requirement . 9 4.2.1.4.2 Conformance . 9 4.2.1.5 Cabinet radiation . 9 4.2.1.5.1 Requirement . 9 4.2.1.5.2 Conformance . 9 4.2.1.6 Void. 9 4.2.1.7 Intermodulation attenuation . 9 4.2.1.7.1 Requirements . 9 4.2.1.7.2 Conformance . 9 4.2.1.8 Void. 9 4.2.1.9 RF power release time . 9 4.2.1.9.1 Requirement . 9 4.2.1.9.2 Conformance . 9 4.2.1.10 Transient behaviour of the transmitter . 9 4.2.1.10.1 Receiver to transmitter turn-around time . 9 4.2.1.10.2 Transmitter to receiver turn-around time . 10 4.2.1.11 Modulation Accuracy - Symbol constellation error . 10 4.2.1.11.1 Requirement . 10 4.2.1.11.2 Conformance . 10 4.2.2 Receiver requirements . 10 4.2.2.1 Sensitivity . 10 4.2.2.1.1 Requirement . 10 4.2.2.1.2 Conformance . 10 4.2.2.2 Co-channel interference . 10 4.2.2.2.1 Requirement . 10 4.2.2.2.2 Conformance . 10 4.2.2.3 First adjacent channel rejection . 10 4.2.2.3.1 Requirement . 10 4.2.2.3.2 Conformance . 10 4.2.2.4 Spurious response rejection of signals within the VHF aeronautical band . 10 4.2.2.4.1 Requirement . 10 SIST EN 301 841-3 V1.2.1:2015

ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 4 4.2.2.4.2 Conformance . 10 4.2.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 11 4.2.2.5.1 Requirement . 11 4.2.2.5.2 Conformance . 11 4.2.2.6 In-band Intermodulation response rejection . 11 4.2.2.6.1 Requirement . 11 4.2.2.6.2 Conformance . 11 4.2.2.7 Blocking or desensitization . 11 4.2.2.7.1 Requirement . 11 4.2.2.7.2 Conformance . 11 4.2.2.8 Conducted spurious emission . 11 4.2.2.8.1 Requirement . 11 4.2.2.8.2 Conformance . 11 4.2.2.9 Cabinet radiation . 11 4.2.2.9.1 Requirement . 11 4.2.2.9.2 Conformance . 11 5 Testing for compliance with technical requirements . 11 5.1 Environmental conditions for testing . 11 5.1.1 Test power source . 12 5.1.2 Normal and extreme test conditions. 12 5.2 Interpretation of the measurement results . 12 5.3 Essential radio test suites . 13 5.3.1 Transmitter test specifications . 13 5.3.1.1 Frequency error . 13 5.3.1.2 Manufacturer's declared output power . 13 5.3.1.3 Adjacent channel power . 13 5.3.1.4 Conducted Spurious emissions . 13 5.3.1.5 Cabinet Radiation . 13 5.3.1.6 Void. 13 5.3.1.7 Inter-modulation attenuation . 13 5.3.1.8 Void. 13 5.3.1.9 RF power release time . 13 5.3.1.10 Transient behaviour of the transmitter . 13 5.3.1.10.1 Receiver to transmitter turn-around time . 13 5.3.1.10.2 Transmitter to receiver turn-around time . 13 5.3.1.11 Modulation accuracy - Symbol constellation error . 13 5.3.2 Receiver test specifications . 13 5.3.2.1 Sensitivity . 13 5.3.2.2 Co-channel interference . 13 5.3.2.3 First Adjacent channel rejection . 14 5.3.2.4 Spurious response rejection of signals within the VHF aeronautical band . 14 5.3.2.5 Spurious response rejection of signals outside the VHF aeronautical band . 14 5.3.2.6 In-band Intermodulation rejection . 14 5.3.2.7 Blocking or desensitization . 14 5.3.2.8 Conducted spurious emission . 14 5.3.2.9 Cabinet Radiation . 14 Annex A (normative): HS Requirements and conformance Test specifications Table (HS-RTT) . 15 Annex B (informative): Bibliography . 17 History . 18
ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 5 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://ipr.etsi.org). 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 Harmonized European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been produced by ETSI in response to mandate M/405 issued from the European Commission under Directive 98/34/EC [i.4] as amended by Directive 98/48/EC [i.3]. The title and reference to the present document are intended to be included in the publication in the Official Journal of the European Union of titles and references of Harmonized Standard under the Directive 1999/5/EC [i.2]. The requirements relevant to Directive 1999/5/EC [i.2] are summarized in annex A. The present document is part 3 of a multi-part deliverable covering VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment, as identified below: Part 1: "Physical layer and MAC sub-layer"; Part 2: "Upper layers"; Part 3: "Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive".
National transposition dates Date of adoption of this EN: 21 April 2015 Date of latest announcement of this EN (doa): 31 July 2015 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 January 2016 Date of withdrawal of any conflicting National Standard (dow): 31 January 2016
Modal verbs terminology In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). "must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation. SIST EN 301 841-3 V1.2.1:2015

ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 6 1 Scope The present document applies to VDL Mode 2 ground-air digital communications using Differential Eight Phase Shift Keying (D8PSK), intended for channel increments of 25 kHz. The VDL Mode 2 system provides data communication exchanges between aircraft and ground-based systems, operating in the VHF band (117,975 MHz to 137,000 MHz). The scope of the present document is limited to ground based stations. NOTE 1: The VDL Mode 2 can be used as an Air/Ground sub-network of the Aeronautical Telecommunication Network (ATN) using a band with AM(R)S spectrum allocation. The present document is intended to cover the provisions of Directive 1999/5/EC [i.2] (R&TTE Directive), article 3.2, which states that ". radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive may apply to equipment within the scope of the present document. NOTE 2: A list of such ENs is included on the web site http://www.newapproach.org. Compliance with relevant aviation regulations may also be required before equipment within the scope of the present document can enter into service.
2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The fol
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