SIST EN 300 422-2 V2.1.1:2017

Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)

HARMONISED EUROPEAN STANDARD
Wireless Microphones;
Audio PMSE up to 3 GHz;
Part 2: Class B Receivers;
Harmonised Standard covering the essential requirements
of article 3.2 of Directive 2014/53/EU

2 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)

Reference
REN/ERM-TG17-19
Keywords
audio, harmonised standard, radio, radio MIC,
testing
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:
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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
3 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
Executive summary . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definitions, symbols and abbreviations . 11
3.1 Definitions . 11
3.2 Symbols . 14
3.3 Abbreviations . 14
4 Technical requirements specifications . 15
4.1 Radio microphone . 15
4.2 In ear monitoring . 15
4.3 Tour Guide Systems . 15
4.4 Wireless Multichannel Audio Systems. 15
4.5 Environmental profile . 16
5 Testing for compliance with technical requirements . 16
5.1 Presentation of equipment for testing purposes . 16
5.1.1 Introduction. 16
5.1.2 Choice of model for testing . 17
5.1.3 Definitions of alignment and switching ranges . 17
5.1.4 Choice of frequencies . 17
5.1.5 Testing of single channel equipment . 18
5.1.6 Testing of two channel equipment . 18
5.1.7 Testing of multi-channel equipment (more than two channels) . 18
5.1.8 Testing of equipment without a permanent external RF port . 18
5.1.8.1 General . 18
5.1.8.2 Equipment with a permanent internal RF port . 18
5.1.8.3 Equipment with a temporary RF port . 18
5.2 Mechanical and electrical design . 18
5.2.1 General . 18
5.2.2 Physical Controls . 18
5.2.3 Performance testing with integral antenna . 19
5.2.4 Marking (equipment identification) . 19
6 Test conditions, power sources and ambient conditions . 19
6.1 Normal and extreme test conditions . 19
6.2 Test power source . 19
6.3 Normal test conditions . 19
6.3.1 Normal temperature and humidity . 19
6.3.2 Normal test power source voltage . 20
6.3.2.1 Mains voltage . 20
6.3.2.2 Other power sources . 20
6.4 Extreme test conditions . 20
6.4.1 Extreme temperatures . 20
6.4.1.1 General . 20
6.4.1.2 Procedures for tests at extreme temperatures . 20
6.4.2 Extreme test power source voltages . 20
6.4.2.1 Mains voltage . 20
6.4.2.2 Other power sources . 20
ETSI
4 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
7 General conditions . 21
7.1 Normal test modulation . 21
7.1.1 Analogue systems . 21
7.1.2 Digital systems . 22
7.1.3 WMAS . 22
7.2 Artificial antenna . 22
7.2.1 General . 22
7.3 Test fixture . 22
7.3.1 General . 22
7.4 Test site and general arrangements for radiated measurements. 23
7.4.1 Introduction. 23
7.5 Modes of operation of the transmitter . 23
7.5.1 General . 23
7.6 Arrangement for test signals at the input of the transmitter . 23
7.6.1 General . 23
8 Methods of measurement and limits for transmitter parameters . 23
8.1 Frequency stability . 23
8.1.1 Method of measurement (analogue) . 23
8.1.2 Method of measurement (digital) . 24
8.1.3 Limit . 24
8.2 Rated output power . 24
8.2.1 Method of measurement for equipment without integral antenna . 24
8.2.2 Method of measurement for equipment with integral antenna. 24
8.2.2.1 Method of measurement under normal test conditions . 24
8.2.3 Limit . 25
8.3 Necessary bandwidth . 25
8.3.1 General . 25
8.3.2 Necessary Bandwidth (BN) for Analogue Systems . 25
8.3.2.1 Method of Measurement . 25
8.3.2.2 Limits . 26
8.3.3 Necessary Bandwidth (BN) for Digital Systems . 26
8.3.3.1 Method of Measurement . 26
8.3.3.2 Limits . 28
8.3.4 Necessary Bandwidth (BN) for WMAS . 29
8.3.4.1 Applicability. 29
8.3.4.2 Method of measurement . 29
8.3.4.3 Limits . 31
8.3.5 Bandwidth measurement procedure for PMSE operation in 2,4 GHz to 2,4835 GHz . 31
8.3.5.1 Applicability . 31
8.3.5.2 Definition . 31
8.3.5.3 Limits . 31
8.3.5.4 Conformance . 31
8.3.5.4.1 Test conditions . 31
8.3.5.4.2 Test method . 32
8.3.6 Transmitter Unwanted Emissions in the Out-of-band Domain Alternative Measurement Procedure . 32
8.3.6.1 Applicability. 32
8.3.6.2 Definition . 32
8.3.6.3 Limit . 33
8.3.6.4 Conformance . 33
8.3.6.4.1 Test conditions . 33
8.3.6.4.2 Test method . 33
8.4 Spurious emissions . 35
8.4.1 Definition . 35
8.4.2 Method of measurement . 35
8.4.3 Limits . 36
8.4.4 Measuring receiver . 36
8.5 Transmitter intermodulation distortion . 36
8.5.1 Definition . 36
8.5.2 Method of measurement . 36
8.5.3 Limits . 38
ETSI
5 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
9 Receiver . 38
9.1 Spurious emissions . 38
9.1.1 Definitions . 38
9.1.2 Method of measuring the power level in a specified load. 38
9.1.3 Method of measuring the effective radiated power of the enclosure . 38
9.1.4 Method of measuring the effective radiated power . 39
9.1.5 Limits . 39
9.2 Receiver sensitivity . 39
9.2.1 Definition . 39
9.2.2 Method of measurement . 40
9.2.3 Limits . 40
9.3 Receiver adjacent channel selectivity . 40
9.3.1 Definition . 40
9.3.2 Method of measurement . 40
9.3.3 Limits . 41
9.4 Receiver blocking . 41
9.4.1 Definition . 41
9.4.2 Method of measurement . 41
9.4.3 Limits . 42
10 Measurement uncertainty . 42
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 43
Annex B (normative): Measurement of Necessary Bandwidth (B) for analogue systems . 44
B.1 Test configuration for measurement of the Necessary Bandwidth (B) for analogue systems . 44
Annex C (normative): Radiated measurement . 45
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 45
C.1.1 General . 45
C.1.2 Anechoic chamber . 45
C.1.3 Anechoic chamber with a conductive ground plane . 46
C.1.4 Open Area Test Site (OATS) . 47
C.1.5 Test antenna . 48
C.1.6 Substitution antenna . 48
C.1.7 Measuring antenna . 49
C.1.8 Stripline arrangement . 49
C.1.8.1 General . 49
C.1.8.2 Description . 49
C.1.8.3 Calibration . 49
C.1.8.4 Mode of use . 49
C.2 Guidance on the use of radiation test sites . 49
C.2.1 General . 49
C.2.2 Verification of the test site . 49
C.2.3 Preparation of the DUT . 50
C.2.4 Power supplies to the DUT. 50
C.2.5 Volume control setting for analogue speech tests . 50
C.2.6 Range length . 50
C.2.7 Site preparation . 51
C.3 Coupling of signals . 51
C.3.1 General . 51
C.3.2 Data signals . 51
C.3.3 Speech and analogue signals . 52
C.3.3.0 General . 52
C.3.3.1 Acoustic coupler description. 52
C.3.3.2 Calibration . 52
C.4 Standard test position . 52
ETSI
6 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
C.5 Test fixture . 53
C.5.1 General . 53
C.5.2 Description . 53
C.5.3 Calibration . 54
C.5.4 Mode of use . 54
Annex D (informative): Additional receiver parameters identified under article 3.2 of
Directive 2014/53/EU . 55
Annex E (informative): Application form for wireless microphone testing . 56
E.1 Introduction . 56
E.1.1 Description . 56
E.1.2 Notice . 56
E.2 Transmitter intermodulation distortion. 56
E.2.1 General . 56
E.2.2 Definition . 56
E.2.3 Method of measurement . 56
E.2.4 Limits . 56
E.2.5 Settings and results . 57
E.3 Receiver Sensitivity . 57
E.3.1 General . 57
E.3.2 Definition . 57
E.3.3 Method of measurement . 57
E.3.4 Limits . 57
E.3.5 Settings and results . 58
E.4 Receiver Adjacent Channel Power Selectivity . 58
E.4.1 General . 58
E.4.2 Definition . 58
E.4.3 Method of measurement . 58
E.4.4 Limits . 58
E.4.5 Settings and results . 59
E.5 Receiver blocking . 59
E.5.1 General . 59
E.5.2 Definition . 59
E.5.3 Method of measurement . 59
E.5.4 Limits . 59
E.5.5 Settings and results . 60
Annex F (informative): Bibliography . 61
Annex G (informative): Change history . 62
History . 63

ETSI
7 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
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 (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.16] 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.12].
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.
The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.17].

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.
ETSI
8 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
Executive summary
With the introduction of Directive 2014/53/EU [i.12], the present multi-part deliverable has been reformatted into
multiple parts to accommodate the different types of equipment represented, i.e. different receivers for audio
Programme Making and Special Events (PMSE) and Assistive Listening Devices (ALD). Part 2 covers Class B
receivers.
The present document seeks to improve spectrum efficiency and has introduced new technology to assist in maximizing
the use of available spectrum.
The present document seeks to provide a platform for Wideband Multichannel Audio Systems (WMAS).
Although the present document covers spectrum up to 3 GHz, it should be emphasized that multi-channel audio PMSE
systems used in professional productions are best suited to spectrum under 2 GHz for reasons of propagation and body
interaction. Further information on audio PMSE is available in ECC Report 204 [i.13].
Introduction
With the introduction of Directive 2014/53/EU [i.12], receiver parameters are now included and the removal of the
9 kHz lower limit has brought inductive loop systems and receivers into this multi-part deliverable. Inductive loop
transmitters are covered within ETSI EN 303 340 [i.18] along with test receivers; hearing aids containing inductive loop
receivers (often referred to as T coil) are now covered in ETSI EN 300 422-4 [i.21]. The frequency range of the present
document has been reduced to accommodate inductive loop receivers.
The present document is a testing standard based on spectrum utilization parameters and does not include performance
characteristics that may be required by the user nor requirements for interfacing equipment.
This multi-part deliverable was originated in 1991 when Assistive Listening Devices (ALD) were a very small part of
the Radio Microphone Industry; in recent years major advances in both the volume and functionality of ALDs has
caused a rethink in how to best present the testing regime in a clear and concise manner. After a number of discussions
the present document covers audio PMSE as Parts 1, 2, and 3, and ALDs as Part 4.
Systems including assistive listening devices (Aids for the handicapped) with analogue or digital modulations and
operating in the range 863 MHz to 865 MHz may be tested to either the present document or to ETSI
EN 301 357-1 [i.1] with due consideration of power and operating frequency.
ALDs may in some cases require stereo transmission to present both left and right audio information to the wearer. For
that reason, devices that transmit information to the hearing impaired may require two channel operation. It is expected
that two or more channel devices will be tested separately when determining bandwidth and associated measurements.
Channels may involve the use of two separate frequencies or wider bandwidth.
Since the initial adoption of ETSI I- ETS 300 422 [i.2] there has been the introduction of further types of equipment
into the market - cordless headphones/loudspeakers, Low power Band II and consumer in-ear monitoring. These are
low power wideband systems that have some characteristics in common with radio microphones but are not compatible
with multichannel radio microphones. This equipment is covered by ETSI EN 301 357-1 [i.1] and annex 10 of
CEPT/ERC/REC 70-03 [i.6].
Additional standards or specifications may be required for equipment:
1) intended to interface to Public Networks, e.g. PSTN. This facility may be subjected to regulatory conditions;
or
2) other relevant radio standards.

ETSI
9 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
1 Scope
The present document specifies the technical characteristics and methods of measurement for the following types of
equipment:
1) Assistive Listening Devices (ALDs);
2) Radio Microphones;
3) In-Ear Monitoring Systems;
4) Wireless Multichannel Audio Systems (WMAS);
5) Tour Guide Systems;
with Class B receivers which have reduced performance requirements with respect to sensitivity, adjacent channel
selectivity, and receiver blocking compared to those with Class A receivers. It does not necessarily include all the
characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.
Equipment with Class B receivers will support the operation of fewer wireless audio channels in a given amount of
spectrum than Class A receivers.
The present document applies to equipment operating on radio frequencies up to 3 GHz (as shown in table 1) using
analogue, digital and hybrid (using both analogue and digital) modulation.
The maximum power recommended for equipment covered by this multi-part deliverable is 250 mW for radio
microphones and 10 mW for ALDs.
An exception to this are the Public Hearing Aids defined in the CEPT Report 004 [i.7] and subsequent ECC [i.9] and
EC Decisions [i.8] on the ex ERMES band (169,4 MHz to 169,8125 MHz) where 500 mW is defined.
The present document covers the essential requirements of Article 3.2 of Directive 2014/53/EU under the conditions
identified in annex A. The present document also covers radio microphones used in the 863 MHz to 865 MHz band,
with a maximum power of 10 mW.
Electromagnetic Compatibility (EMC) requirements are covered by ETSI EN 301 489-9 [i.4].
National regulations on:
1) maximum power output;
2) licensing status;
will take precedence or those detailed in the latest version of:
• EC Decision 2005/928/EC [i.9];
• ECC/DEC/(05)02 [i.10];
• the EC SRD Decision [i.8]; or
• CEPT/ERC/REC 70-03 [i.6], annex 10 (see http://www.erodocdb.dk/);
• EC Decision 2014/641/EU [i.11].
Unless otherwise stated in the EC SRD Decision, ECC Decision or National Interfaces, Radio Microphones can be
subject to individual licence.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit up to 3 000 MHz
Receive up to 3 000 MHz
ETSI
10 Final draft ETSI EN 300 422-2 V2.1.0 (2016-12)
2 References
2.1 Normative references
Referenced documents which are not found to be publicly available in the expected location might be found at
https://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] Void.
[2] IEC 60244-13:1991: "Metho
...

HARMONISED EUROPEAN STANDARD
Wireless Microphones;
Audio PMSE up to 3 GHz;
Part 2: Class B Receivers;
Harmonised Standard covering the essential requirements
of article 3.2 of Directive 2014/53/EU

2 ETSI EN 300 422-2 V2.1.1 (2017-02)

Reference
REN/ERM-TG17-19
Keywords
audio, harmonised standard, radio, radio MIC,
testing
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 2017.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI EN 300 422-2 V2.1.1 (2017-02)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
Executive summary . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definitions, symbols and abbreviations . 11
3.1 Definitions . 11
3.2 Symbols . 14
3.3 Abbreviations . 14
4 Technical requirements specifications . 15
4.1 Radio microphone . 15
4.2 In ear monitoring . 15
4.3 Tour Guide Systems . 15
4.4 Wireless Multichannel Audio Systems. 15
4.5 Environmental profile . 16
5 Testing for compliance with technical requirements . 16
5.1 Presentation of equipment for testing purposes . 16
5.1.1 Introduction. 16
5.1.2 Choice of model for testing . 17
5.1.3 Definitions of alignment and switching ranges . 17
5.1.4 Choice of frequencies . 17
5.1.5 Testing of single channel equipment . 18
5.1.6 Testing of two channel equipment . 18
5.1.7 Testing of multi-channel equipment (more than two channels) . 18
5.1.8 Testing of equipment without a permanent external RF port . 18
5.1.8.1 General . 18
5.1.8.2 Equipment with a permanent internal RF port . 18
5.1.8.3 Equipment with a temporary RF port . 18
5.2 Mechanical and electrical design . 18
5.2.1 General . 18
5.2.2 Physical Controls . 18
5.2.3 Performance testing with integral antenna . 19
6 Test conditions, power sources and ambient conditions . 19
6.1 Normal and extreme test conditions . 19
6.2 Test power source . 19
6.3 Normal test conditions . 19
6.3.1 Normal temperature and humidity . 19
6.3.2 Normal test power source voltage . 20
6.3.2.1 Mains voltage . 20
6.3.2.2 Other power sources . 20
6.4 Extreme test conditions . 20
6.4.1 Extreme temperatures . 20
6.4.1.1 General . 20
6.4.1.2 Procedures for tests at extreme temperatures . 20
6.4.2 Extreme test power source voltages . 20
6.4.2.1 Mains voltage . 20
6.4.2.2 Other power sources . 20
ETSI
4 ETSI EN 300 422-2 V2.1.1 (2017-02)
7 General conditions . 21
7.1 Normal test modulation . 21
7.1.1 Analogue systems . 21
7.1.2 Digital systems . 22
7.1.3 WMAS . 22
7.2 Artificial antenna . 22
7.2.1 General . 22
7.3 Test fixture . 22
7.3.1 General . 22
7.4 Test site and general arrangements for radiated measurements. 23
7.4.1 Introduction. 23
7.5 Modes of operation of the transmitter . 23
7.5.1 General . 23
7.6 Arrangement for test signals at the input of the transmitter . 23
7.6.1 General . 23
8 Methods of measurement and limits for transmitter parameters . 23
8.1 Frequency stability . 23
8.1.1 Method of measurement (analogue) . 23
8.1.2 Method of measurement (digital) . 24
8.1.3 Limit . 24
8.2 Rated output power . 24
8.2.1 Method of measurement for equipment without integral antenna . 24
8.2.2 Method of measurement for equipment with integral antenna. 24
8.2.2.1 Method of measurement under normal test conditions . 24
8.2.3 Limit . 25
8.3 Necessary bandwidth . 25
8.3.1 General . 25
8.3.2 Necessary Bandwidth (BN) for Analogue Systems . 25
8.3.2.1 Method of Measurement . 25
8.3.2.2 Limits . 26
8.3.3 Necessary Bandwidth (BN) for Digital Systems . 26
8.3.3.1 Method of Measurement . 26
8.3.3.2 Limits . 28
8.3.4 Necessary Bandwidth (BN) for WMAS . 29
8.3.4.1 Applicability. 29
8.3.4.2 Method of measurement . 29
8.3.4.3 Limits . 31
8.3.5 Bandwidth measurement procedure for PMSE operation in 2,4 GHz to 2,4835 GHz . 31
8.3.5.1 Applicability . 31
8.3.5.2 Definition . 31
8.3.5.3 Limits . 31
8.3.5.4 Conformance . 31
8.3.5.4.1 Test conditions . 31
8.3.5.4.2 Test method . 32
8.3.6 Transmitter Unwanted Emissions in the Out-of-band Domain Alternative Measurement Procedure . 32
8.3.6.1 Applicability. 32
8.3.6.2 Definition . 32
8.3.6.3 Limit . 33
8.3.6.4 Conformance . 33
8.3.6.4.1 Test conditions . 33
8.3.6.4.2 Test method . 33
8.4 Spurious emissions . 35
8.4.1 Definition . 35
8.4.2 Method of measurement . 35
8.4.3 Limits . 36
8.4.4 Measuring receiver . 36
8.5 Transmitter intermodulation distortion . 36
8.5.1 Definition . 36
8.5.2 Method of measurement . 36
8.5.3 Limits . 38
ETSI
5 ETSI EN 300 422-2 V2.1.1 (2017-02)
9 Receiver . 38
9.1 Spurious emissions . 38
9.1.1 Definitions . 38
9.1.2 Method of measuring the power level in a specified load. 38
9.1.3 Method of measuring the effective radiated power of the enclosure . 38
9.1.4 Method of measuring the effective radiated power . 39
9.1.5 Limits . 39
9.2 Receiver sensitivity . 39
9.2.1 Definition . 39
9.2.2 Method of measurement . 40
9.2.3 Limits . 40
9.3 Receiver adjacent channel selectivity . 40
9.3.1 Definition . 40
9.3.2 Method of measurement . 40
9.3.3 Limits . 41
9.4 Receiver blocking . 41
9.4.1 Definition . 41
9.4.2 Method of measurement . 41
9.4.3 Limits . 42
10 Measurement uncertainty . 42
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 43
Annex B (normative): Measurement of Necessary Bandwidth (B) for analogue systems . 44
B.1 Test configuration for measurement of the Necessary Bandwidth (B) for analogue systems . 44
Annex C (normative): Radiated measurement . 45
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 45
C.1.1 General . 45
C.1.2 Anechoic chamber . 45
C.1.3 Anechoic chamber with a conductive ground plane . 46
C.1.4 Open Area Test Site (OATS) . 47
C.1.5 Test antenna . 48
C.1.6 Substitution antenna . 48
C.1.7 Measuring antenna . 49
C.1.8 Stripline arrangement . 49
C.1.8.1 General . 49
C.1.8.2 Description . 49
C.1.8.3 Calibration . 49
C.1.8.4 Mode of use . 49
C.2 Guidance on the use of radiation test sites . 49
C.2.1 General . 49
C.2.2 Verification of the test site . 49
C.2.3 Preparation of the DUT . 50
C.2.4 Power supplies to the DUT. 50
C.2.5 Volume control setting for analogue speech tests . 50
C.2.6 Range length . 50
C.2.7 Site preparation . 51
C.3 Coupling of signals . 51
C.3.1 General . 51
C.3.2 Data signals . 51
C.3.3 Speech and analogue signals . 52
C.3.3.0 General . 52
C.3.3.1 Acoustic coupler description. 52
C.3.3.2 Calibration . 52
C.4 Standard test position . 52
ETSI
6 ETSI EN 300 422-2 V2.1.1 (2017-02)
C.5 Test fixture . 53
C.5.1 General . 53
C.5.2 Description . 53
C.5.3 Calibration . 54
C.5.4 Mode of use . 54
Annex D (informative): Additional receiver parameters identified under article 3.2 of
Directive 2014/53/EU . 55
Annex E (informative): Application form for wireless microphone testing . 56
E.1 Introduction . 56
E.1.1 Description . 56
E.1.2 Notice . 56
E.2 Transmitter intermodulation distortion. 56
E.2.1 General . 56
E.2.2 Definition . 56
E.2.3 Method of measurement . 56
E.2.4 Limits . 56
E.2.5 Settings and results . 57
E.3 Receiver Sensitivity . 57
E.3.1 General . 57
E.3.2 Definition . 57
E.3.3 Method of measurement . 57
E.3.4 Limits . 57
E.3.5 Settings and results . 58
E.4 Receiver Adjacent Channel Power Selectivity . 58
E.4.1 General . 58
E.4.2 Definition . 58
E.4.3 Method of measurement . 58
E.4.4 Limits . 58
E.4.5 Settings and results . 59
E.5 Receiver blocking . 59
E.5.1 General . 59
E.5.2 Definition . 59
E.5.3 Method of measurement . 59
E.5.4 Limits . 59
E.5.5 Settings and results . 60
Annex F (informative): Bibliography . 61
Annex G (informative): Change history . 62
History . 63

ETSI
7 ETSI EN 300 422-2 V2.1.1 (2017-02)
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.16] 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.12].
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.
The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.17].

National transposition dates
Date of adoption of this EN: 13 February 2017
Date of latest announcement of this EN (doa): 31 May 2017
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2017
Date of withdrawal of any conflicting National Standard (dow): 30 November 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.
ETSI
8 ETSI EN 300 422-2 V2.1.1 (2017-02)
Executive summary
With the introduction of Directive 2014/53/EU [i.12], the present multi-part deliverable has been reformatted into
multiple parts to accommodate the different types of equipment represented, i.e. different receivers for audio
Programme Making and Special Events (PMSE) and Assistive Listening Devices (ALD). Part 2 covers Class B
receivers.
The present document seeks to improve spectrum efficiency and has introduced new technology to assist in maximizing
the use of available spectrum.
The present document seeks to provide a platform for Wideband Multichannel Audio Systems (WMAS).
Although the present document covers spectrum up to 3 GHz, it should be emphasized that multi-channel audio PMSE
systems used in professional productions are best suited to spectrum under 2 GHz for reasons of propagation and body
interaction. Further information on audio PMSE is available in ECC Report 204 [i.13].
Introduction
With the introduction of Directive 2014/53/EU [i.12], receiver parameters are now included and the removal of the
9 kHz lower limit has brought inductive loop systems and receivers into this multi-part deliverable. Inductive loop
transmitters are covered within ETSI EN 303 340 [i.18] along with test receivers; hearing aids containing inductive loop
receivers (often referred to as T coil) are now covered in ETSI EN 300 422-4 [i.21]. The frequency range of the present
document has been reduced to accommodate inductive loop receivers.
The present document is a testing standard based on spectrum utilization parameters and does not include performance
characteristics that may be required by the user nor requirements for interfacing equipment.
This multi-part deliverable was originated in 1991 when Assistive Listening Devices (ALD) were a very small part of
the Radio Microphone Industry; in recent years major advances in both the volume and functionality of ALDs has
caused a rethink in how to best present the testing regime in a clear and concise manner. After a number of discussions
the present document covers audio PMSE as Parts 1, 2, and 3, and ALDs as Part 4.
Systems including assistive listening devices (Aids for the handicapped) with analogue or digital modulations and
operating in the range 863 MHz to 865 MHz may be tested to either the present document or to ETSI
EN 301 357-1 [i.1] with due consideration of power and operating frequency.
ALDs may in some cases require stereo transmission to present both left and right audio information to the wearer. For
that reason, devices that transmit information to the hearing impaired may require two channel operation. It is expected
that two or more channel devices will be tested separately when determining bandwidth and associated measurements.
Channels may involve the use of two separate frequencies or wider bandwidth.
Since the initial adoption of ETSI I-ETS 300 422 [i.2] there has been the introduction of further types of equipment into
the market - cordless headphones/loudspeakers, Low power Band II and consumer in-ear monitoring. These are low
power wideband systems that have some characteristics in common with radio microphones but are not compatible with
multichannel radio microphones. This equipment is covered by ETSI EN 301 357-1 [i.1] and annex 10 of
CEPT/ERC/REC 70-03 [i.6].
Additional standards or specifications may be required for equipment:
1) intended to interface to Public Networks, e.g. PSTN. This facility may be subjected to regulatory conditions;
or
2) other relevant radio standards.

ETSI
9 ETSI EN 300 422-2 V2.1.1 (2017-02)
1 Scope
The present document specifies the technical characteristics and methods of measurement for the following types of
equipment:
a) Assistive Listening Devices (ALDs);
b) Radio Microphones;
c) In-Ear Monitoring Systems;
d) Wireless Multichannel Audio Systems (WMAS);
e) Tour Guide Systems;
with Class B receivers which have reduced performance requirements with respect to sensitivity, adjacent channel
selectivity, and receiver blocking compared to those with Class A receivers. It does not necessarily include all the
characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.
Equipment with Class B receivers will support the operation of fewer wireless audio channels in a given amount of
spectrum than Class A receivers.
The present document applies to equipment operating on radio frequencies up to 3 GHz (as shown in table 1) using
analogue, digital and hybrid (using both analogue and digital) modulation.
The maximum power recommended for equipment covered by this multi-part deliverable is 250 mW for radio
microphones and 10 mW for ALDs.
An exception to this are the Public Hearing Aids defined in the CEPT Report 004 [i.7] and subsequent EC Decision
2005/928/EC [i.9] and EC Decision 2006/771/EC [i.8] on the ex ERMES band (169,4 MHz to 169,8125 MHz) where
500 mW is defined.
The present document covers the essential requirements of Article 3.2 of Directive 2014/53/EU under the conditions
identified in annex A. The present document also covers radio microphones used in the 863 MHz to 865 MHz band,
with a maximum power of 10 mW.
Electromagnetic Compatibility (EMC) requirements are covered by ETSI EN 301 489-9 [i.4].
National regulations on:
1) maximum power output;
2) licensing status;
will take precedence or those detailed in the latest version of:
• EC Decision 2005/928/EC [i.9];
• ECC/DEC/(05)02 [i.10];
• the EC SRD Decision [i.8]; or
• CEPT/ERC/REC 70-03 [i.6], annex 10 (see http://www.erodocdb.dk/);
• EC Decision 2014/641/EU [i.11].
Unless otherwise stated in the EC SRD Decision, ECC Decision or National Interfaces, Radio Microphones can be
subject to individual licence.
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit up to 3 000 MHz
Receive up to 3 000 MHz
ETSI
10 ETSI EN 300 422-2 V2.1.1 (2017-02)
2 References
2.1 Normative references
References are specific, identified by date of publication and/or edition number or version number. Only the cited
version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://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] Void.
[2] IEC 60244-13:1991: "Methods of measurement for radio transmitters - Part 13: Performance
characteristics for FM sound broadcasting".
2.2 Informative references
References are either specific (identified by date of pub
...

SLOVENSKI STANDARD
01-april-2017
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UD]UHGD%+DUPRQL]LUDQLVWDQGDUGNL]DMHPDELVWYHQH]DKWHYHþOHQDGLUHNWLYH
(8
Wireless Microphones - Audio PMSE up to 3 GHz - Part 2: Class B Receivers -
Harmonised Standard covering the essential requirements of article 3.2 of Directive
2014/53/EU
Ta slovenski standard je istoveten z: ETSI EN 300 422-2 V2.1.1 (2017-02)
ICS:
33.160.50 Pribor Accessories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Wireless Microphones;
Audio PMSE up to 3 GHz;
Part 2: Class B Receivers;
Harmonised Standard covering the essential requirements
of article 3.2 of Directive 2014/53/EU

2 ETSI EN 300 422-2 V2.1.1 (2017-02)

Reference
REN/ERM-TG17-19
Keywords
audio, harmonised standard, radio, radio MIC,
testing
ETSI
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© European Telecommunications Standards Institute 2017.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI EN 300 422-2 V2.1.1 (2017-02)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 7
Executive summary . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definitions, symbols and abbreviations . 11
3.1 Definitions . 11
3.2 Symbols . 14
3.3 Abbreviations . 14
4 Technical requirements specifications . 15
4.1 Radio microphone . 15
4.2 In ear monitoring . 15
4.3 Tour Guide Systems . 15
4.4 Wireless Multichannel Audio Systems. 15
4.5 Environmental profile . 16
5 Testing for compliance with technical requirements . 16
5.1 Presentation of equipment for testing purposes . 16
5.1.1 Introduction. 16
5.1.2 Choice of model for testing . 17
5.1.3 Definitions of alignment and switching ranges . 17
5.1.4 Choice of frequencies . 17
5.1.5 Testing of single channel equipment . 18
5.1.6 Testing of two channel equipment . 18
5.1.7 Testing of multi-channel equipment (more than two channels) . 18
5.1.8 Testing of equipment without a permanent external RF port . 18
5.1.8.1 General . 18
5.1.8.2 Equipment with a permanent internal RF port . 18
5.1.8.3 Equipment with a temporary RF port . 18
5.2 Mechanical and electrical design . 18
5.2.1 General . 18
5.2.2 Physical Controls . 18
5.2.3 Performance testing with integral antenna . 19
6 Test conditions, power sources and ambient conditions . 19
6.1 Normal and extreme test conditions . 19
6.2 Test power source . 19
6.3 Normal test conditions . 19
6.3.1 Normal temperature and humidity . 19
6.3.2 Normal test power source voltage . 20
6.3.2.1 Mains voltage . 20
6.3.2.2 Other power sources . 20
6.4 Extreme test conditions . 20
6.4.1 Extreme temperatures . 20
6.4.1.1 General . 20
6.4.1.2 Procedures for tests at extreme temperatures . 20
6.4.2 Extreme test power source voltages . 20
6.4.2.1 Mains voltage . 20
6.4.2.2 Other power sources . 20
ETSI
4 ETSI EN 300 422-2 V2.1.1 (2017-02)
7 General conditions . 21
7.1 Normal test modulation . 21
7.1.1 Analogue systems . 21
7.1.2 Digital systems . 22
7.1.3 WMAS . 22
7.2 Artificial antenna . 22
7.2.1 General . 22
7.3 Test fixture . 22
7.3.1 General . 22
7.4 Test site and general arrangements for radiated measurements. 23
7.4.1 Introduction. 23
7.5 Modes of operation of the transmitter . 23
7.5.1 General . 23
7.6 Arrangement for test signals at the input of the transmitter . 23
7.6.1 General . 23
8 Methods of measurement and limits for transmitter parameters . 23
8.1 Frequency stability . 23
8.1.1 Method of measurement (analogue) . 23
8.1.2 Method of measurement (digital) . 24
8.1.3 Limit . 24
8.2 Rated output power . 24
8.2.1 Method of measurement for equipment without integral antenna . 24
8.2.2 Method of measurement for equipment with integral antenna. 24
8.2.2.1 Method of measurement under normal test conditions . 24
8.2.3 Limit . 25
8.3 Necessary bandwidth . 25
8.3.1 General . 25
8.3.2 Necessary Bandwidth (BN) for Analogue Systems . 25
8.3.2.1 Method of Measurement . 25
8.3.2.2 Limits . 26
8.3.3 Necessary Bandwidth (BN) for Digital Systems . 26
8.3.3.1 Method of Measurement . 26
8.3.3.2 Limits . 28
8.3.4 Necessary Bandwidth (BN) for WMAS . 29
8.3.4.1 Applicability. 29
8.3.4.2 Method of measurement . 29
8.3.4.3 Limits . 31
8.3.5 Bandwidth measurement procedure for PMSE operation in 2,4 GHz to 2,4835 GHz . 31
8.3.5.1 Applicability . 31
8.3.5.2 Definition . 31
8.3.5.3 Limits . 31
8.3.5.4 Conformance . 31
8.3.5.4.1 Test conditions . 31
8.3.5.4.2 Test method . 32
8.3.6 Transmitter Unwanted Emissions in the Out-of-band Domain Alternative Measurement Procedure . 32
8.3.6.1 Applicability. 32
8.3.6.2 Definition . 32
8.3.6.3 Limit . 33
8.3.6.4 Conformance . 33
8.3.6.4.1 Test conditions . 33
8.3.6.4.2 Test method . 33
8.4 Spurious emissions . 35
8.4.1 Definition . 35
8.4.2 Method of measurement . 35
8.4.3 Limits . 36
8.4.4 Measuring receiver . 36
8.5 Transmitter intermodulation distortion . 36
8.5.1 Definition . 36
8.5.2 Method of measurement . 36
8.5.3 Limits . 38
ETSI
5 ETSI EN 300 422-2 V2.1.1 (2017-02)
9 Receiver . 38
9.1 Spurious emissions . 38
9.1.1 Definitions . 38
9.1.2 Method of measuring the power level in a specified load. 38
9.1.3 Method of measuring the effective radiated power of the enclosure . 38
9.1.4 Method of measuring the effective radiated power . 39
9.1.5 Limits . 39
9.2 Receiver sensitivity . 39
9.2.1 Definition . 39
9.2.2 Method of measurement . 40
9.2.3 Limits . 40
9.3 Receiver adjacent channel selectivity . 40
9.3.1 Definition . 40
9.3.2 Method of measurement . 40
9.3.3 Limits . 41
9.4 Receiver blocking . 41
9.4.1 Definition . 41
9.4.2 Method of measurement . 41
9.4.3 Limits . 42
10 Measurement uncertainty . 42
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 43
Annex B (normative): Measurement of Necessary Bandwidth (B) for analogue systems . 44
B.1 Test configuration for measurement of the Necessary Bandwidth (B) for analogue systems . 44
Annex C (normative): Radiated measurement . 45
C.1 Test sites and general arrangements for measurements involving the use of radiated fields . 45
C.1.1 General . 45
C.1.2 Anechoic chamber . 45
C.1.3 Anechoic chamber with a conductive ground plane . 46
C.1.4 Open Area Test Site (OATS) . 47
C.1.5 Test antenna . 48
C.1.6 Substitution antenna . 48
C.1.7 Measuring antenna . 49
C.1.8 Stripline arrangement . 49
C.1.8.1 General . 49
C.1.8.2 Description . 49
C.1.8.3 Calibration . 49
C.1.8.4 Mode of use . 49
C.2 Guidance on the use of radiation test sites . 49
C.2.1 General . 49
C.2.2 Verification of the test site . 49
C.2.3 Preparation of the DUT . 50
C.2.4 Power supplies to the DUT. 50
C.2.5 Volume control setting for analogue speech tests . 50
C.2.6 Range length . 50
C.2.7 Site preparation . 51
C.3 Coupling of signals . 51
C.3.1 General . 51
C.3.2 Data signals . 51
C.3.3 Speech and analogue signals . 52
C.3.3.0 General . 52
C.3.3.1 Acoustic coupler description. 52
C.3.3.2 Calibration . 52
C.4 Standard test position . 52
ETSI
6 ETSI EN 300 422-2 V2.1.1 (2017-02)
C.5 Test fixture . 53
C.5.1 General . 53
C.5.2 Description . 53
C.5.3 Calibration . 54
C.5.4 Mode of use . 54
Annex D (informative): Additional receiver parameters identified under article 3.2 of
Directive 2014/53/EU . 55
Annex E (informative): Application form for wireless microphone testing . 56
E.1 Introduction . 56
E.1.1 Description . 56
E.1.2 Notice . 56
E.2 Transmitter intermodulation distortion. 56
E.2.1 General . 56
E.2.2 Definition . 56
E.2.3 Method of measurement . 56
E.2.4 Limits . 56
E.2.5 Settings and results . 57
E.3 Receiver Sensitivity . 57
E.3.1 General . 57
E.3.2 Definition . 57
E.3.3 Method of measurement . 57
E.3.4 Limits . 57
E.3.5 Settings and results . 58
E.4 Receiver Adjacent Channel Power Selectivity . 58
E.4.1 General . 58
E.4.2 Definition . 58
E.4.3 Method of measurement . 58
E.4.4 Limits . 58
E.4.5 Settings and results . 59
E.5 Receiver blocking . 59
E.5.1 General . 59
E.5.2 Definition . 59
E.5.3 Method of measurement . 59
E.5.4 Limits . 59
E.5.5 Settings and results . 60
Annex F (informative): Bibliography . 61
Annex G (informative): Change history . 62
History . 63

ETSI
7 ETSI EN 300 422-2 V2.1.1 (2017-02)
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.16] 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.12].
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.
The present document is part 2 of a multi-part deliverable. Full details of the entire series can be found in part 1 [i.17].

National transposition dates
Date of adoption of this EN: 13 February 2017
Date of latest announcement of this EN (doa): 31 May 2017
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 November 2017
Date of withdrawal of any conflicting National Standard (dow): 30 November 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.
ETSI
8 ETSI EN 300 422-2 V2.1.1 (2017-02)
Executive summary
With the introduction of Directive 2014/53/EU [i.12], the present multi-part deliverable has been reformatted into
multiple parts to accommodate the different types of equipment represented, i.e. different receivers for audio
Programme Making and Special Events (PMSE) and Assistive Listening Devices (ALD). Part 2 covers Class B
receivers.
The present document seeks to improve spectrum efficiency and has introduced new technology to assist in maximizing
the use of available spectrum.
The present document seeks to provide a platform for Wideband Multichannel Audio Systems (WMAS).
Although the present document covers spectrum up to 3 GHz, it should be emphasized that multi-channel audio PMSE
systems used in professional productions are best suited to spectrum under 2 GHz for reasons of propagation and body
interaction. Further information on audio PMSE is available in ECC Report 204 [i.13].
Introduction
With the introduction of Directive 2014/53/EU [i.12], receiver parameters are now included and the removal of the
9 kHz lower limit has brought inductive loop systems and receivers into this multi-part deliverable. Inductive loop
transmitters are covered within ETSI EN 303 340 [i.18] along with test receivers; hearing aids containing inductive loop
receivers (often referred to as T coil) are now covered in ETSI EN 300 422-4 [i.21]. The frequency range of the present
document has been reduced to accommodate inductive loop receivers.
The present document is a testing standard based on spectrum utilization parameters and does not include performance
characteristics that may be required by the user nor requirements for interfacing equipment.
This multi-part deliverable was originated in 1991 when Assistive Listening Devices (ALD) were a very small part of
the Radio Microphone Industry; in recent years major advances in both the volume and functionality of ALDs has
caused a rethink in how to best present the testing regime in a clear and concise manner. After a number of discussions
the present document covers audio PMSE as Parts 1, 2, and 3, and ALDs as Part 4.
Systems including assistive listening devices (Aids for the handicapped) with analogue or digital modulations and
operating in the range 863 MHz to 865 MHz may be tested to either the present document or to ETSI
EN 301 357-1 [i.1] with due consideration of power and operating frequency.
ALDs may in some cases require stereo transmission to present both left and right audio information to the wearer. For
that reason, devices that transmit information to the hearing impaired may require two channel operation. It is expected
that two or more channel devices will be tested separately when determining bandwidth and associated measurements.
Channels may involve the use of two separate frequencies or wider bandwidth.
Since the initial adoption of ETSI I-ETS 300 422 [i.2] there has been the introduction of further types of equipment into
the market - cordless headphones/loudspeakers, Low power Band II and consumer in-ear monitoring. These are low
power wideband systems that have some characteristics in common with radio microphones but are not compatible with
multichannel radio microphones. This equipment is covered by ETSI EN 301 357-1 [i.1] and annex 10 of
CEPT/ERC/REC 70-03 [i.6].
Additional standards or specifications may be required for equipment:
1) intended to interface to Public Networks, e.g. PSTN. This facility may be subjected to regulatory conditions;
or
2) other relevant radio standards.

ETSI
9 ETSI EN 300 422-2 V2.1.1 (2017-02)
1 Scope
The present document specifies the technical characteristics and methods of measurement for the following types of
equipment:
a) Assistive Listening Devices (ALDs);
b) Radio Microphones;
c) In-Ear Monitoring Systems;
d) Wireless Multichannel Audio Systems (WMAS);
e) Tour Guide Systems;
with Class B receivers which have reduced performance requirements with respect to sensitivity, adjacent channel
selectivity, and receiver blocking compared to those with Class A receivers. It does not necessarily include all the
characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.
Equipment with Class B receivers will support the operation of fewer wireless audio channels in a given amount of
spectrum than Class A receivers.
The present document applies to equipment operating on radio frequencies up to 3 GHz (as shown in table 1) using
analogue, digital and hybrid (using both analogue and digital) modulation.
The maximum power recommended for equipment covered by this multi-part deliverable is 250 mW for radio
microphones and 10 mW for ALDs.
An exception to this are the Public Hearing Aids defined in the CEPT Report 004 [i.7] and subsequent EC Decision
2005/928/EC [i.9] and EC Decision 2006/771/EC [i.8] on the ex ERMES band (169,4 MHz to 169,8125 MHz) where
500 mW is defined.
The present document covers the essential requirements of Article 3.2 of Directive 2014/53/EU under the conditions
identified in annex A. The present document also covers radio microphones used in the 863 MHz to 865 MHz band,
with a maximum power of 10 mW.
Electromagnetic Compatibility (EMC) requirements are covered by ETSI EN 301 489-9 [i.4].
National regulations on:
1) maximum power output;
2) licensing status;
will take precedence or those detailed in the latest version of:
• EC Decision 2005/928/EC [i.9];
• ECC/DEC/(05)02 [i.10];
• the EC SRD Decision [i.8]; or
• CEPT/ERC/REC 70-03 [i.6], annex 10 (see http://www.erodocdb.dk/);
• EC Decision 2014/641/EU [i.11].
Unless otherwise stated in the EC SRD Decision, ECC Decision or National Interfac
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