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

REN/ERM-JTFEA-010

Radijska oprema za digitalno povezavo VHF zrak-tla, 2. način - Tehnične karakteristike in merilne metode za talno opremo - 3. del: Harmonizirani EN, ki zajema bistvene zahteve člena 3.2 direktive R&TTE

Ta dokument se uporablja za radijsko opremo za digitalno povezavo tla-zrak (VDL), 2. način, digitalnih komunikacij, ki uporabljajo diferencialno osemfazno premično šifriranje (D8PSK), namenjeno za kanalne priraste 25 kHz. Sistem VDL, 2. način, omogoča izmenjavo podatkovne komunikacije med letalskim plovilom in talnimi sistemi ter deluje v frekvenčnem pasu VHF (od 117975 MHz do 137000 MHz).
Področje uporabe tega dokumenta je omejeno na zemeljske postaje.
OPOMBA 1: Sistem VDL, 2. način, se lahko uporablja kot podomrežje zrak/tla aeronavtičnega telekomunikacijskega omrežja (ATN), ki uporablja pas z dodeljevanjem spektra AM(R)S.
Ta dokument zajema določbe člena 3(2) Direktive 1999/5/ES [i.2] (direktive R&TTE), ki določa, da »[...] mora biti radijska oprema skonstruirana tako, da učinkovito uporablja spekter, razporejen za prizemne/vesoljske radijske komunikacije in orbitalne vire, tako da ne pride do škodljivega motenja.«
Poleg tega dokumenta se za opremo na področju uporabe tega dokumenta uporabljajo tudi drugi standardi EN, ki določajo tehnične zahteve v zvezi z bistvenimi zahtevami iz drugih delov člena 3 direktive R&TTE.
OPOMBA 2: Seznam tovrstnih evropskih standardov je na voljo na spletnem mestu http://www.newapproach.org.
Skladnost z ustreznimi letalskimi predpisi je morda potrebna, preden se lahko oprema, zajeta v področje uporabe tega dokumenta, začne uporabljati.

General Information

• Status: Published
• Publication Date: 09-Jul-2015
• Technical Committee: ERM JTFEA - JOINED TASK FORCE ERM AERO
• Current Stage: 12 - Completion
• Due Date: 21-Apr-2015
• Completion Date: 21-Apr-2015
• Mandate: M/405
• Ref Project: SIST EN 301 841-3 V1.2.1:2015 - 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

Standards Content (Sample)

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



SIST EN 301 841-3 V1.2.1:2015



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
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
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.
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
SIST EN 301 841-3 V1.2.1:2015



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 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 applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. 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 not necessary for the application of the present document but they assist the user with regard to a particular subject area. [i.1] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics". [i.2] 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 (R&TTE Directive). SIST EN 301 841-3 V1.2.1:2015



ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 7 [i.3] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending Directive 98/34/EC laying down a procedure for the provision of information in the field of technical standards and regulations.
[i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a procedure for the provision of information in the field of technical standards and regulations and of rules on Information Society services. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.2] and the following apply: adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase noise) at the transmitter output. adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER requirement in the presence of an interfering signal in an adjacent channel NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio. Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between aircraft stations, in which survival craft stations may participate average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under normal operating conditions Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC). Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum specified BER performance in the presence of an unwanted signal at the same assigned channel NOTE: The ratio (in dB) between the wanted signal level and the unwanted signal level is the co-channel interference ratio. conducted measurements: measurements which are made using a direct RF connection to the equipment under test environmental profile: range of environmental conditions under which equipment within the scope of the present document is required to comply with the provisions of the present document ground based station: aeronautical station equipment, in the Aeronautical Mobile Service (AMS), for use with an external antenna and intended for use at a fixed location radiated measurements: measurements which involve the measurement of a radiated field spurious emissions: conducted RF emissions on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information NOTE: Spurious emissions include parasitic emissions, intermodulation products and frequency conversion products. X 25: ITU-T standard for the protocols and message formats that define the interface between a terminal and a packet switching network SIST EN 301 841-3 V1.2.1:2015



ETSI ETSI EN 301 841-3 V1.2.1 (2015-04) 8 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ACR Adjacent Channel Rejection AM Amplitude Modulation AM(R)S Aeronautical Mobile (Route) Service AMS Aeronautical Mobile Service ATN Aeronautical Telecommunication Network BER Bit Error Rate CCI Co-Channel Interference D8PSK Differential Eight Phase Shift Keying DSB Double Side Band FEC Forward Error Correction MAC Medium Access Control R&TTE Radio and Telecommunications Terminal Equipment RF Radio Frequency TX Transmission VDL VHF Data Link VHF Very High Frequency 4 Technical requirements specifications 4.1 Environmental profile The technical requirements of the present document apply under the environmental profile for operation of the equipment, which shall be declared by the supplier. The equipment shall comply with all the technical requirements of the present document at all times when operating within the boundary limits of the declared operational environmental profile. 4.2 Conformance requirements 4.2.1 Transmitter requirements 4.2.1.1 Frequency error 4.2.1.1.1 Requirement Requirement for frequency tolerance is specified in ETSI EN 301 841-1 [1], clause 6.1.1. 4.2.1.1.2 Conforma
...

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






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

---------------------- Page: 1 ----------------------
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

---------------------- Page: 2 ----------------------
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

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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

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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

---------------------- Page: 5 ----------------------
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 applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
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 not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics".
[i.2] 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 (R&TTE Directive).
ETSI

---------------------- Page: 6 ----------------------
7 ETSI EN 301 841-3 V1.2.1 (2015-04)
[i.3] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending
Directive 98/34/EC laying down a procedure for the provision of information in the field of
technical standards and regulations.
[i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations and of
rules on Information Society services.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.2] and the
following apply:
adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel
NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase
noise) at the transmitter output.
adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER
requirement in the presence of an interfering signal in an adjacent channel
NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to
achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio.
Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between
aircraft stations, in which survival craft stations may participate
average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an
interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under
normal operating conditions
Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received
NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC).
Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum
specified BER performance in the presence of an unwanted signal at the same assigned channel
NOTE: The ratio (in dB) between the wanted signal level and the unwanted signal level is the co-channel
interference ratio.
conducted measurements: measurements which are made using a direct RF connection to the equipment under test
environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document
ground based station: aeronautical station equipment, in the Aeronautical Mobile Service (AMS), for use with an
external antenna and intended for use at a fixed location
radiated measurements: measurements which involve the measurement of a radiated field
spurious emissions: conducted RF emissions on a frequency or frequencies which are outside the necessary bandwidth
and the level of which may be reduced without affecting the corresponding transmission of information
NOTE: Spurious emissions include parasitic emissions, intermodulation products and frequency conversion
products.
X 25: ITU-T standard for the protocols and message formats that define the interface between a terminal and a packet
switching network
ETSI

---------------------- Page: 7 ----------------------
8 ETSI EN 301 841-3 V1.2.1 (2015-04)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACR Adjacent Channel Rejection
AM Amplitude Modulation
AM(R)S Aeronautical Mobile (Route) Service
AMS Aeronautical Mobile Service
ATN Aeronautical Telecommunication Network
BER Bit Error Rate
CCI Co-Channel Interference
D8PSK Differential Eight Phase Shift Keying
DSB Double Side Band
FEC Forward Error Correction
MAC Medium Access Control
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
TX Transmission
VDL VHF Data Link
VHF Very High Frequency
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be declared by the supplier. The equipment shall comply with all the technical requirements of
the present document at all times when operating within the boundary limits of the declared operational environmental
profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Frequency error
4.2.1.1.1 Requirement
Requirement for frequency tolerance is specified in ETSI EN 301 841-1 [1], clause 6.1.1.
4.2.1.1.2 Conformance
Conformance tests as defined in clause 5.3.1.1 shall be carried out with the limits defined
...

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

---------------------- Page: 1 ----------------------
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
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GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
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

---------------------- Page: 3 ----------------------
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

---------------------- Page: 4 ----------------------
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

---------------------- Page: 5 ----------------------
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; Part 1: Physical layer
and MAC sub-layer".
2.2 Informative references
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics".
[i.2] 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 (R&TTE Directive).
[i.3] Directive 98/48/EC of the European Parliament and of the Council of 20 July 1998 amending
Directive 98/34/EC laying down a procedure for the provision of information in the field of
technical standards and regulations.
ETSI

---------------------- Page: 6 ----------------------
7 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
[i.4] Directive 98/34/EC of the European Parliament and of the Council of 22 June 1998 laying down a
procedure for the provision of information in the field of technical standards and regulations and of
rules on Information Society services.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the R&TTE Directive [i.2] and the
following apply:
adjacent channel power: amount of the modulated RF signal power transmitted outside of the assigned channel
NOTE: Adjacent channel power includes discrete spurious, signal sidebands, and noise density (including phase
noise) at the transmitter output.
adjacent channel rejection: receiver's ability to demodulate the desired signal and meet the uncorrected BER
requirement in the presence of an interfering signal in an adjacent channel
NOTE: The ratio (in dB) between the adjacent interfering signal level and the desired signal level necessary to
achieve the specified minimum uncorrected BER, is the Adjacent Channel Rejection (ACR) ratio.
Aeronautical Mobile Service (AMS): mobile service between ground based stations and airborne stations, or between
aircraft stations, in which survival craft stations may participate
average transmitter output power: average power supplied to the antenna transmission line by a transmitter during an
interval of time sufficiently long, compared with the lowest frequency encountered in the modulation, taken under
normal operating conditions
Bit Error Rate (BER): ratio between the number of erroneous bits received and the total number of bits received
NOTE: The uncorrected BER represents the BER without the benefit of Forward Error Correction (FEC).
Co-Channel Interference (CCI): capability of a receiver to demodulate the desired signal and achieve the minimum
specified BER performance in the presence of an unwanted signal at the same assigned channel
NOTE: The ratio (in dB) between the wanted signal level and the unwanted signal level is the co-channel
interference ratio.
conducted measurements: measurements which are made using a direct RF connection to the equipment under test
environmental profile: range of environmental conditions under which equipment within the scope of the present
document is required to comply with the provisions of the present document
ground based station: aeronautical station equipment, in the Aeronautical Mobile Service (AMS), for use with an
external antenna and intended for use at a fixed location
radiated measurements: measurements which involve the measurement of a radiated field
spurious emissions: conducted RF emissions on a frequency or frequencies which are outside the necessary bandwidth
and the level of which may be reduced without affecting the corresponding transmission of information
NOTE: Spurious emissions include parasitic emissions, intermodulation products and frequency conversion
products.
X 25: ITU-T standard for the protocols and message formats that define the interface between a terminal and a packet
switching network
ETSI

---------------------- Page: 7 ----------------------
8 Draft ETSI EN 301 841-3 V1.2.0 (2014-12)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ACR Adjacent Channel Rejection
AM Amplitude Modulation
AM(R)S Aeronautical Mobile (Route) Service
AMS Aeronautical Mobile Service
ATN Aeronautical Telecommunication Network
BER Bit Error Rate
CCI Co-Channel Interference
D8PSK Differential Eight Phase Shift Keying
DSB Double Side Band
FEC Forward Error Correction
MAC Medium Access Control
R&TTE Radio and Telecommunications Terminal Equipment
RF Radio Frequency
TX Transmission
VDL VHF Data Link
VHF Very High Frequency
4 Technical requirements specifications
4.1 Environmental profile
The technical requirements of the present document apply under the environmental profile for operation of the
equipment, which shall be declared by the supplier. The equipment shall comply with all the technical requirements of
the present document at all times when operating within the boundary limits of the declared operational environmental
profile.
4.2 Conformance requirements
4.2.1 Transmitter requirements
4.2.1.1 Frequency error
4.2.1.1.1 Requirement
Requirement for frequency tolerance is specified in ETSI EN 301 841-1 [1], clause 6.1.1.
4.2.1.1.2 Conformance
Conformance tests as defined in clause 5.3.1.1 shall be carried out with the limits defined by clause 4.2.1.1.1.
4.2.1.2 Manufacturer's declared output power
4.2.1.2.1 Requirement
Requirement for manufacturer's declared output power is specified in ETSI EN 301 841-1 [1], clause 6.1.2.
4.2.1.2.2 Confor
...