Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB) - Technical characteristics and methods of measurement for ground-based equipment - Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU

The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying
(D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB system
provides data broadcast from ground based to aircraft systems, operating in the VHF band (108,000 MHz to
117,975 MHz). The scope of the present document is limited to ground based stations and is restricted to the civil use of
GBAS with horizontally polarized signals (GBAS/H).
The present document contains requirements to demonstrate that "... Radio equipment shall be so constructed that it
both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
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 Radio Equipment Directive [i.1] as well as essential requirements under the SES
Interoperability Regulation 552/2004 [i.2] and related implementing rules and/or essential requirements under the
EASA basic Regulation (EC) No 216/2008 [i.5] and Regulation (EC) No 1108/2009 [i.6] may apply to equipment
within the scope of the present document.

Talni sistem za povečanje razpršenega oddajanja podatkov VHF zemlja-zrak - Tehnične karakteristike in merilne metode za talno opremo - Harmonizirani standard, ki zajema bistvene zahteve člena 3.2 direktive 2014/53/EU

Ta dokument velja za oddajanje podatkov VHF zemlja-zrak (VDB) z uporabo diferencialno kodirane modulacije s faznim preskokom (D8PSK) sistema GBAS, namenjenega za prirastke po 25 kHz. Sistem VDB zagotavlja oddajanje podatkov iz zemeljskih sistemov v zračne sisteme in deluje v frekvenčnem pasu VHF (od 108,000 MHz do 117,975 MHz). Obseg tega dokumenta je omejen na talne postaje in civilno uporabo sistema GBAS s signali v horizontalni polarizaciji (GBAS/H).
Ta dokument vsebuje zahteve, s katerimi se dokazuje, da »... je radijska oprema sestavljena tako, da učinkovito uporablja in tudi podpira učinkovito uporabo radijskega spektra, tako da ne pride do škodljivih motenj« [i.1].
Poleg tega dokumenta se lahko za opremo na področju uporabe tega dokumenta uporabljajo tudi drugi standardi EN, ki določajo tehnične zahteve v zvezi z bistvenimi zahtevami iz drugih delov 3. člena direktive o radijski opremi [i.1], in tudi bistvene zahteve iz Uredbe o interoperabilnosti enotnega evropskega neba 552/2004 [i.2] ter zadevna izvedbena pravila in/ali bistvene zahteve iz osnovne Uredbe EASA (ES) 216/2008 [i.5] in Uredbe (ES) 1108/2009 [i.6].

General Information

Status
Published
Publication Date
17-Aug-2016
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
16-Aug-2016
Due Date
21-Oct-2016
Completion Date
18-Aug-2016

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ETSI EN 303 084 V2.1.1 (2016-08) - Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB); Technical characteristics and methods of measurement for ground-based equipment; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
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ETSI EN 303 084 V2.1.0 (2016-06) - Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB); Technical characteristics and methods of measurement for ground-based equipment; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QL]LUDQL(8Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB) - Technical characteristics and methods of measurement for ground-based equipment - Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU49.090On-board equipment and instruments33.060.01Radijske komunikacije na splošnoRadiocommunications in generalICS:Ta slovenski standard je istoveten z:ETSI EN 303 084 V2.1.1 (2016-08)SIST EN 303 084 V2.1.1:2016en01-oktober-2016SIST EN 303 084 V2.1.1:2016SLOVENSKI
STANDARD



SIST EN 303 084 V2.1.1:2016



ETSI EN 303 084 V2.1.1 (2016-08) Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB); Technical characteristics and methods of measurement for ground-based equipment; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU
HARMONISED EUROPEAN STANDARD SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 2
Reference REN/ERM-JTFEA-19 Keywords aeronautical, AM, DSB, harmonised standard, radio, testing, VHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16
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 https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx 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 2016. 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 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 3 Contents Intellectual Property Rights . 5 Foreword . 5 Modal verbs terminology . 5 Executive Summary . 6 Introduction . 6 1 Scope . 7 2 References . 7 2.1 Normative references . 7 2.2 Informative references . 7 3 Definitions and abbreviations . 8 3.1 Definitions . 8 3.2 Abbreviations . 9 4 Technical requirements specifications . 10 4.1 Environmental profile . 10 4.2 Conformance requirements . 10 4.2.1 Transmitter requirements . 10 4.2.1.0 Applicability. 10 4.2.1.1 Frequency error . 10 4.2.1.1.1 Requirement . 10 4.2.1.1.2 Conformance . 10 4.2.1.2 Transmitter power . 11 4.2.1.2.1 Requirement . 11 4.2.1.2.2 Conformance . 11 4.2.1.3 Adjacent channel power . 11 4.2.1.3.1 Requirement . 11 4.2.1.3.2 Conformance . 12 4.2.1.4 Spurious emissions . 13 4.2.1.4.1 Conducted emissions . 13 4.2.1.4.2 Radiated emissions - cabinet radiation . 15 4.2.1.5 Intermodulation attenuation . 15 4.2.1.5.1 Requirements . 15 4.2.1.5.2 Conformance . 15 4.2.1.6 Transient behaviour of the transmitter . 15 4.2.1.6.1 RF power rise time . 15 4.2.1.6.2 RF power release time . 17 4.2.1.7 Modulation Accuracy - Symbol constellation error . 17 4.2.1.7.1 Requirement . 17 4.2.1.7.2 Conformance . 17 4.2.1.8 Emissions in unassigned time slots . 18 4.2.1.8.1 Requirement . 18 4.2.1.8.2 Conformance . 18 4.2.2 Receiver requirements . 19 4.2.2.1 Applicability. 19 4.2.2.2 Sensitivity . 19 4.2.2.2.1 Requirements . 19 4.2.2.2.2 Conformance . 20 4.2.2.3 Symbol rate capture range . 20 4.2.2.3.1 Requirements . 20 4.2.2.3.2 Conformance . 21 4.2.2.4 Co-channel rejection . 21 4.2.2.4.1 Requirements . 21 4.2.2.4.2 Conformance . 22 4.2.2.5 Adjacent Channel selectivity . 23 SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 4 4.2.2.5.1 Requirements . 23 4.2.2.5.2 Conformance . 25 4.2.2.6 Spurious response rejection . 27 4.2.2.6.1 Requirements . 27 4.2.2.6.2 Conformance . 28 4.2.2.7 Spurious emissions . 29 4.2.2.7.1 Conducted spurious emission . 29 4.2.2.7.2 Cabinet radiation . 30 4.2.2.8 Out-of-band Intermodulation . 30 4.2.2.8.1 Requirements . 30 4.2.2.8.2 Conformance . 31 5 General test conditions for compliance with technical requirements . 32 5.1 Environmental conditions for testing . 32 5.1.0 General Requirements . 32 5.1.1 Normal and extreme test conditions. 32 5.1.1.0 General . 32 5.1.1.1 Normal temperature and humidity . 32 5.1.1.2 Normal power sources . 33 5.1.1.2.1 Mains voltage and frequency . 33 5.1.1.2.2 Other power sources . 33 5.1.2 Extreme test conditions . 33 5.1.2.1 Extreme temperatures . 33 5.1.2.2 Procedure for tests at extreme temperatures . 33 5.1.2.2.1 General . 33 5.1.2.2.2 Low temperature . 33 5.1.2.3 Extreme values of test power sources . 34 5.1.2.4 Other power sources . 34 5.1.3 Test power source . 34 5.2 Interpretation of the measurement results . 34 Annex A (normative): Relationship between the present document and the essential requirements of Directive 2014/53/EU . 36 Annex B (informative): Bibliography . 38 History . 39
SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 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 (https://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 Harmonised European Standard (EN) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.7] to provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC [i.1]. The present document provides the technical procedures and limits for compliance with article 3.2 of the Directive 2014/53/EU [i.1] for VHF ground-air digital broadcast of Ground-Based Augmentation System (GBAS). Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated EFTA regulations.
National transposition dates Date of adoption of this EN: 2 August 2016 Date of latest announcement of this EN (doa): 30 November 2016 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
31 May 2017 Date of withdrawal of any conflicting National Standard (dow): 31 May 2018
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 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 6 Executive Summary The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying (D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB system provides data broadcast from ground based to aircraft systems, operating in the VHF band (108,000 MHz to 117,975 MHz). The scope of the present document is limited to ground based stations and is restricted to the civil use of GBAS with horizontally polarized signals (GBAS/H). Introduction The present document states the technical specifications for ground-based equipment implementing Very High Frequency (VHF) Data Broadcast (VDB) air interface, operating in the VHF band (108,000 MHz to 117,975 MHz) in increments of 25 kHz. NOTE: In ICAO Annex 10, Vol. 1 [2], clause 7.2.3 in attachment D it is stated: ".Until compatibility criteria are developed for GBAS VDB and ILS, VDB cannot be assigned to channels below 112.025 MHz."
SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 7 1 Scope The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying (D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB system provides data broadcast from ground based to aircraft systems, operating in the VHF band (108,000 MHz to 117,975 MHz). The scope of the present document is limited to ground based stations and is restricted to the civil use of GBAS with horizontally polarized signals (GBAS/H). The present document contains requirements to demonstrate that ". Radio equipment shall be so constructed that it both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1]. 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 Radio Equipment Directive [i.1] as well as essential requirements under the SES Interoperability Regulation 552/2004 [i.2] and related implementing rules and/or essential requirements under the EASA basic Regulation (EC) No 216/2008 [i.5] and Regulation (EC) No 1108/2009 [i.6] may apply to equipment within the scope of the present document. 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 300 113-1 (V1.7.1) (11-2011): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data (and/or speech) using constant or non-constant envelope modulation and having an antenna connector; Part 1: Technical characteristics and methods of measurement". [2] ICAO Annex 10: "Aeronautical Telecommunications", Vol. I, November 2014. 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] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC. SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 8 [i.2] Regulation (EC) 552/2004 of the European Parliament and Council of 10 March 2004 on the interoperability of the European Air Traffic Management network (the interoperability Regulation). OJ L96, 31.03.2004, p. 26 as amended by Regulation EC No 1070/2009, OJ L 300, 14/11/2009, p. 34. [i.3] ETSI TR 100 028-1 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 1". [i.4] ETSI TR 100 028-2 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM); Uncertainties in the measurement of mobile radio equipment characteristics; Part 2". [i.5] Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20 February 2008 on common rules in the field of civil aviation and establishing a European Aviation Safety Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and Directive 2004/36/EC. [i.6] Regulation (EC) No 1108/2009 of the European Parliament and of the Council of 21 October 2009 amending Regulation (EC) No 216/2008 in the field of aerodromes, air traffic management and air navigation services and repealing Directive 2006/23/EC. [i.7] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request to the European Committee for Electrotechnical Standardisation and to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in the Radio Equipment Directive [i.1] 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 Route Service (AM(R)S): mobile service between ground based stations and airborne 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 SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 9 data rate: with a nominal data rate of 31 500 bits/s, the VDB symbol rate is expected to be 10 500 symbols/s 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 Route Service (AM(R)S), 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. 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AC Alternating Current ACR Adjacent Channel Rejection AGC Automatic Gain Control AM Amplitude Modulation AM(R)S Aeronautical Mobile (Route) Service BER Bit Error Rate CCI Co-Channel Interference CW Continuous Wave D8PSK Differential Eight Phase Shift Keying DSB Double Side Band EASA European Aviation Safety Agency EC European Commission EFTA European Free Trade Association EU European Union EVM Error Vector Magnitude FC Frequency Counter FEC Forward Error Correction FM Frequency Modulation GBAS Ground Based Augmentation System ICAO International Civil Aviation Organization ILS Instrument Landing System MFR Message Failure Rate PC Personal Computer PPS Pulse Per Second RBW Resolution BandWidth RF Radio Frequency RMS Root Mean Square SA Spectrum Analyser SES Single European Sky SWT Sweep Time TUT Transmitter Under Test VBW Video BandWidth VDB VHF Data Broadcast VHF Very High Frequency VSA Vector Signal Analyser SIST EN 303 084 V2.1.1:2016



ETSI ETSI EN 303 084 V2.1.1 (2016-08) 10 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 4.2.1.0 Applicability All the technical requirements in clause 4.2.1 shall only be applicable for equipment containing a transmitter. 4.2.1.1 Frequency error 4.2.1.1.1 Requirement The frequency of the RF carrier shall be within
...

Final draft ETSI EN 303 084 V2.1.0 (2016-06)






HARMONISED EUROPEAN STANDARD
Ground Based Augmentation System (GBAS)
VHF ground-air Data Broadcast (VDB);
Technical characteristics and methods of measurement
for ground-based equipment;
Harmonised Standard covering the essential requirements
of article 3.2 of the Directive 2014/53/EU

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2 Final draft ETSI EN 303 084 V2.1.0 (2016-06)



Reference
REN/ERM-JTFEA-19
Keywords
aeronautical, AM, DSB, radio, testing, VHF

ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

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
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
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 2016.
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 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Executive Summary . 5
Introduction . 6
1 Scope . 7
2 References . 7
2.1 Normative references . 7
2.2 Informative references . 7
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 9
4 Technical requirements specifications . 10
4.1 Environmental profile . 10
4.2 Conformance requirements . 10
4.2.1 Transmitter requirements . 10
4.2.1.0 Applicability. 10
4.2.1.1 Frequency error . 10
4.2.1.1.1 Requirement . 10
4.2.1.1.2 Conformance . 10
4.2.1.2 Transmitter power . 11
4.2.1.2.1 Requirement . 11
4.2.1.2.2 Conformance . 11
4.2.1.3 Adjacent channel power . 11
4.2.1.3.1 Requirement . 11
4.2.1.3.2 Conformance . 12
4.2.1.4 Spurious emissions . 13
4.2.1.4.1 Conducted emissions . 13
4.2.1.4.2 Radiated emissions - cabinet radiation . 15
4.2.1.5 Intermodulation attenuation . 15
4.2.1.5.1 Requirements . 15
4.2.1.5.2 Conformance . 15
4.2.1.6 Transient behaviour of the transmitter . 15
4.2.1.6.1 RF power rise time . 15
4.2.1.6.2 RF power release time . 17
4.2.1.7 Modulation Accuracy - Symbol constellation error . 17
4.2.1.7.1 Requirement . 17
4.2.1.7.2 Conformance . 17
4.2.1.8 Emissions in unassigned time slots . 18
4.2.1.8.1 Requirement . 18
4.2.1.8.2 Conformance . 18
4.2.2 Receiver requirements . 19
4.2.2.1 Applicability. 19
4.2.2.2 Sensitivity . 19
4.2.2.2.1 Requirements . 19
4.2.2.2.2 Conformance . 20
4.2.2.3 Symbol rate capture range . 20
4.2.2.3.1 Requirements . 20
4.2.2.3.2 Conformance . 21
4.2.2.4 Co-channel rejection . 21
4.2.2.4.1 Requirements . 21
4.2.2.4.2 Conformance . 22
4.2.2.5 Adjacent Channel selectivity . 23
ETSI

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4 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
4.2.2.5.1 Requirements . 23
4.2.2.5.2 Conformance . 25
4.2.2.6 Spurious response rejection . 26
4.2.2.6.1 Requirements . 26
4.2.2.6.2 Conformance . 28
4.2.2.7 Spurious emissions . 29
4.2.2.7.1 Conducted spurious emission . 29
4.2.2.7.2 Cabinet radiation . 29
4.2.2.8 Out-of-band Intermodulation . 29
4.2.2.8.1 Requirements . 29
4.2.2.8.2 Conformance . 30
5 General test conditions for compliance with technical requirements . 31
5.1 Environmental conditions for testing . 31
5.1.0 General Requirements . 31
5.1.1 Normal and extreme test conditions. 32
5.1.1.0 General . 32
5.1.1.1 Normal temperature and humidity . 32
5.1.1.2 Normal power sources . 32
5.1.1.2.1 Mains voltage and frequency . 32
5.1.1.2.2 Other power sources . 32
5.1.2 Extreme test conditions . 32
5.1.2.1 Extreme temperatures . 32
5.1.2.2 Procedure for tests at extreme temperatures . 33
5.1.2.2.1 General . 33
5.1.2.2.2 Low temperature . 33
5.1.2.3 Extreme values of test power sources . 33
5.1.2.4 Other power sources . 33
5.1.3 Test power source . 33
5.2 Interpretation of the measurement results . 34
Annex A (normative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 35
Annex B (informative): Bibliography . 37
History . 38


ETSI

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5 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
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 (https://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 final draft Harmonised European Standard (EN) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI standards EN Approval Procedure.
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.7] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.1].
The present document provides the technical procedures and limits for compliance with article 3.2 of the Directive
2014/53/EU [i.1] for VHF ground-air digital broadcast of Ground-Based Augmentation System (GBAS).
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.

Proposed 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): 18 months after doa

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.
Executive Summary
The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying
(D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB system
provides data broadcast from ground based to aircraft systems, operating in the VHF band (108,000 MHz to
117,975 MHz). The scope of the present document is limited to ground based stations and is restricted to the civil use of
GBAS with horizontally polarized signals (GBAS/H).
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6 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
Introduction
The present document states the technical specifications for ground-based equipment implementing Very High
Frequency (VHF) Data Broadcast (VDB) air interface, operating in the VHF band (108,000 MHz to 117,975 MHz) in
increments of 25 kHz.
NOTE: In ICAO Annex 10, Vol. 1 [2], clause 7.2.3 in attachment D it is stated: ".Until compatibility criteria are
developed for GBAS VDB and ILS, VDB cannot be assigned to channels below 112.025 MHz."

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7 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
1 Scope
The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying
(D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB system
provides data broadcast from ground based to aircraft systems, operating in the VHF band (108,000 MHz to
117,975 MHz). The scope of the present document is limited to ground based stations and is restricted to the civil use of
GBAS with horizontally polarized signals (GBAS/H).
The present document contains requirements to demonstrate that ". Radio equipment shall be so constructed that it
both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference " [i.1].
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 Radio Equipment Directive [i.1] as well as essential requirements under the SES
Interoperability Regulation 552/2004 [i.2] and related implementing rules and/or essential requirements under the
EASA basic Regulation (EC) No 216/2008 [i.5] and Regulation (EC) No 1108/2009 [i.6] may apply to equipment
within the scope of the present document.
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 300 113-1 (V1.7.1) (11-2011): "Electromagnetic compatibility and Radio spectrum
Matters (ERM); Land mobile service; Radio equipment intended for the transmission of data
(and/or speech) using constant or non-constant envelope modulation and having an antenna
connector; Part 1: Technical characteristics and methods of measurement".
[2] ICAO Annex 10: "Aeronautical Telecommunications", Vol. I, November 2014.
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] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC.
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8 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
[i.2] Regulation (EC) 552/2004 of the European Parliament and Council of 10 March 2004 on the
interoperability of the European Air Traffic Management network (the interoperability
Regulation). OJ L96, 31.03.2004, p. 26 as amended by Regulation EC No 1070/2009, OJ L 300,
14/11/2009, p. 34.
[i.3] ETSI TR 100 028-1 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 1".
[i.4] ETSI TR 100 028-2 (V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Uncertainties in the measurement of mobile radio equipment characteristics; Part 2".
[i.5] Regulation (EC) No 216/2008 of the European Parliament and of the Council of 20 February 2008
on common rules in the field of civil aviation and establishing a European Aviation Safety
Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and
Directive 2004/36/EC.
[i.6] Regulation (EC) No 1108/2009 of the European Parliament and of the Council of 21 October 2009
amending Regulation (EC) No 216/2008 in the field of aerodromes, air traffic management and air
navigation services and repealing Directive 2006/23/EC.
[i.7] Commission Implementing Decision C(2015) 5376 final of 4.8.2015 on a standardisation request
to the European Committee for Electrotechnical Standardisation and to the European
Telecommunications Standards Institute as regards radio equipment in support of Directive
2014/53/EU of the European Parliament and of the Council.
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in the Radio Equipment Directive [i.1] 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 Route Service (AM(R)S): mobile service between ground based stations and airborne 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
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9 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
data rate: with a nominal data rate of 31 500 bits/s, the VDB symbol rate is expected to be 10 500 symbols/s
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 Route Service (AM(R)S), 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.
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AC Alternating Current
ACR Adjacent Channel Rejection
AGC Automatic Gain Control
AM Amplitude Modulation
AM(R)S Aeronautical Mobile (Route) Service
BER Bit Error Rate
CCI Co-Channel Interference
CW Continuous Wave
D8PSK Differential Eight Phase Shift Keying
DSB Double Side Band
EASA European Aviation Safety Agency
EC European Commission
EFTA European Free Trade Association
EU European Union
EVM Error Vector Magnitude
FC Frequency Counter
FEC Forward Error Correction
FM Frequency Modulation
GBAS Ground Based Augmentation System
ICAO International Civil Aviation Organization
ILS Instrument Landing System
MFR Message Failure Rate
PC Personal Computer
PPS Pulse Per Second
RBW Resolution BandWidth
RF Radio Frequency
RMS Root Mean Square
SA Spectrum Analyser
SES Single European Sky
SWT Sweep Time
TUT Transmitter Under Test
VBW Video BandWidth
VDB VHF Data Broadcast
VHF Very High Frequency
VSA Vector Signal Analyser
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10 Final draft ETSI EN 303 084 V2.1.0 (2016-06)
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
4.2.1.0 Applicability
All the technical requirements in clause 4.2.1 shall only be applicable for equipment contain
...

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