SIST EN 300 422-1 V1.3.2:2008
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Wireless microphones in the 25 MHz to 3 GHz frequency range - Part 1: Technical characteristics and methods of measurement
Electromagnetic compatibility and Radio spectrum Matters (ERM) - Wireless microphones in the 25 MHz to 3 GHz frequency range - Part 1: Technical characteristics and methods of measurement
To investigate the items listed in GSC-10/8(GRSC) Radio microphones and cordless audio Standardization, and prepare changes to EN 300422 plus GRSC 001 and TS 102-192. This work item will also consider the incorperation of EN 301-840 into the final document.The present document covers the minimum characteristics considered necessary in order to make the best use of the available frequency spectrum for wireless microphones. The present document specifies the minimum performance requirements and the methods of measurement of Assistive Listening Devices, radio microphones and in-ear monitoring systems. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable. The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz using analogue, digital and hybrid (using both analogue and digital) modulation. The present document does not apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA) modulation.
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and eirp above 1 GHz). Equipment above 250 mW should be tested to EN 300 454-1 [6].
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 EN 301 489-9 [7].
National regulations on maximum power output will apply or those detailed in the latest version of
CEPT/ERC/REC 70-03 [11], annex 10 (see http://www.erodocdb.dk/).
The classes of equipment given in the present document are as follows:
- class 1 equipment would normally be considered as a category requiring an operator licence;
- class 2 equipment would be considered in some countries as not requiring an operator licence.
The types of equipment covered by the present document are as follows:
• professional hand held radio microphones;
• professional body worn radio microphones;
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped).
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) - Brezžični mikrofoni v frekvenčnem območju od 25 MHz do 3 GHz - 1. del: Tehnične karakteristike in merilne metode
General Information
Buy Standard
Standards Content (Sample)
ETSI EN 300 422-1 V1.3.2 (2008-03)
European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Wireless microphones
in the 25 MHz to 3 GHz frequency range;
Part 1: Technical characteristics and
methods of measurement
---------------------- Page: 1 ----------------------
2 ETSI EN 300 422-1 V1.3.2 (2008-03)
Reference
REN/ERM-TG17WG3-008-1
Keywords
audio, 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
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI EN 300 422-1 V1.3.2 (2008-03)
Contents
Intellectual Property Rights.6
Foreword.6
Introduction .7
1 Scope.8
2 References.9
2.1 Normative references.9
2.2 Informative references.9
3 Definitions, symbols and abbreviations .10
3.1 Definitions.10
3.2 Symbols.11
3.3 Abbreviations.11
4 Functional characteristics.12
4.1 Radio microphone descriptions.12
4.2 In ear monitoring.12
4.3 Assistive Listening Devices (Aids for the handicapped).12
4.4 Tour Guide systems.13
5 General.13
5.1 Presentation of equipment for testing purposes.13
5.1.1 Choice of model for testing .14
5.1.2 Definitions of alignment and switching ranges.14
5.1.3 Choice of frequencies.14
5.1.4 Testing of single channel equipment .14
5.1.5 Testing of two channel equipment.14
5.1.6 Testing of multi-channel equipment (more than two channels).14
5.1.7 Testing of equipment without a permanent external RF port.14
5.1.7.1 Equipment with a permanent internal RF port .15
5.1.7.2 Equipment with a temporary RF port.15
5.2 Mechanical and electrical design.15
5.2.1 General.15
5.2.2 Controls.15
5.2.3 Performance testing with Integral antenna.15
5.2.4 Marking (equipment identification).15
5.3 Interpretation of the measurement results .15
6 Test conditions, power sources and ambient conditions .16
6.1 Normal and extreme test-conditions.16
6.2 Test power source.16
6.3 Normal test conditions.16
6.3.1 Normal temperature and humidity.16
6.3.2 Normal test power source voltage.16
6.3.2.1 Mains voltage.16
6.3.2.2 Other power sources.17
6.4 Extreme test conditions .17
6.4.1 Extreme temperatures.17
6.4.1.1 Procedures for tests at extreme temperatures .17
6.4.2 Extreme test power source voltages.17
6.4.2.1 Mains voltage.17
6.4.2.2 Other power sources.17
7 General conditions.17
7.1 Normal test modulation.17
7.1.1 Analogue systems.17
7.1.2 Digital systems.18
ETSI
---------------------- Page: 3 ----------------------
4 ETSI EN 300 422-1 V1.3.2 (2008-03)
7.2 Artificial antenna.19
7.3 Test fixture.19
7.4 Test site and general arrangements for radiated measurements.19
7.5 Modes of operation of the transmitter .19
7.6 Arrangement for test signals at the input of the transmitter .19
8 Methods of measurement and limits for transmitter parameters .20
8.1 Frequency stability .20
8.1.1 Method of measurement (analogue) .20
8.1.2 Method of measurement (digital).20
8.1.3 Limit.20
8.2 Rated output power .20
8.2.1 Method of measurement for equipment without integral antenna .20
8.2.2 Method of measurement for equipment with integral antenna.20
8.2.2.1 Method of measurement under normal test conditions .20
8.2.3 Limit.21
8.3 Necessary bandwidth.21
8.3.1 Necessary Bandwidth (BN) for Analogue Systems .21
8.3.1.1 Method of Measurement .21
8.3.1.2 Limits.22
8.3.2 Necessary Bandwidth (BN) for Digital Systems .22
8.3.2.1 Method of Measurement .22
8.3.2.2 Limits.24
8.4 Spurious emissions.25
8.4.1 Definition.25
8.4.2 Method of measurement.25
8.4.3 Limits.26
8.4.4 Measuring receiver.26
9 Receiver.26
9.1 Spurious emissions.26
9.1.1 Definitions.26
9.1.2 Method of measuring the power level in a specified load.26
9.1.3 Method of measuring the effective radiated power of the enclosure .27
9.1.4 Method of measuring the effective radiated power.27
9.1.5 Limits.27
10 Measurement uncertainty .28
Annex A (normative): Radiated measurement.29
A.1 Test sites and general arrangements for measurements involving the use of radiated fields .29
A.1.1 Anechoic Chamber.29
A.1.2 Anechoic Chamber with a conductive ground plane.30
A.1.3 Open Area Test Site (OATS) .31
A.1.4 Test antenna.32
A.1.5 Substitution antenna.32
A.1.6 Measuring antenna.33
A.1.7 Stripline arrangement.33
A.1.7.1 General.33
A.1.7.2 Description.33
A.1.7.3 Calibration.33
A.1.7.4 Mode of use .33
A.2 Guidance on the use of radiation test sites .33
A.2.1 Verification of the test site .33
A.2.2 Preparation of the EUT.33
A.2.3 Power supplies to the EUT.34
A.2.4 Volume control setting for analogue speech tests .34
A.2.5 Range length.34
A.2.6 Site preparation.35
A.3 Coupling of signals.35
A.3.1 General.35
ETSI
---------------------- Page: 4 ----------------------
5 ETSI EN 300 422-1 V1.3.2 (2008-03)
A.3.2 Data Signals.35
A.3.3 Speech and analogue signals .35
A.3.3.1 Acoustic coupler description.36
A.3.3.2 Calibration.36
A.4 Standard test position .36
A.5 Test fixture.37
A.5.1 Description.37
A.5.2 Calibration.37
A.5.3 Mode of use.38
Annex B (normative): Measurement of Necessary Bandwidth (BN) for analogue systems.39
Annex C (informative): Bibliography.40
History .41
ETSI
---------------------- Page: 5 ----------------------
6 ETSI EN 300 422-1 V1.3.2 (2008-03)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document has been updated in line with the advances in radio microphone technology in the digital field
and also with changes generated within CEPT in the former ERMES band for aids for the handicapped.
The present document is part 1 of a multi-part deliverable covering the Electromagnetic compatibility and Radio
spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range, as identified below:
Part 1: "Technical characteristics and methods of measurement";
Part 2: "Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive".
National transposition dates
Date of adoption of this EN: 14 March 2008
Date of latest announcement of this EN (doa): 30 June 2008
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2008
Date of withdrawal of any conflicting National Standard (dow): 31 December 2008
ETSI
---------------------- Page: 6 ----------------------
7 ETSI EN 300 422-1 V1.3.2 (2008-03)
Introduction
In preparing the present document, much attention has been given to assure a low interference probability, while at the
same time allowing maximum flexibility and service to the end-user.
Common technical specifications and harmonized frequency allocations are expected to greatly reduce problems of
interference and illegal use.
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.
In-ear monitoring systems may be tested to either the present document (< 200 kHz max. occupied bandwidth) or to
EN 301 357-1 [4] (< 300 kHz max. occupied bandwidth) with due consideration of power and operating frequency.
Consumer radio microphones with 300 kHz occupied bandwidth can also be tested to EN 301 357-1 [4].
Since the initial adoption of I-ETS 300 422 [5] 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 EN 301 357-1 [4].
Additional standards or specifications may be required for equipment intended to interface to the Public Switched
Telephone Network (PSTN). This facility may be subjected to regulatory conditions.
ETSI
---------------------- Page: 7 ----------------------
8 ETSI EN 300 422-1 V1.3.2 (2008-03)
1 Scope
The present document covers the minimum characteristics considered necessary in order to make the best use of the
available frequency spectrum for wireless microphones. The present document specifies the minimum performance
requirements and the methods of measurement of Assistive Listening Devices, radio microphones and in-ear monitoring
systems. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily
represent the optimum performance achievable.
The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz (as shown in
table 1) using analogue, digital and hybrid (using both analogue and digital) modulation. The present document does not
apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA)
modulation.
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and
eirp above 1 GHz). Equipment above 250 mW should be tested to EN 300 454-1 [6].
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 EN 301 489-9 [7].
National regulations on maximum power output will apply or those detailed in the latest version of
CEPT/ERC/REC 70-03 [11], annex 10 (see http://www.erodocdb.dk/).
Equipment effective radiated power (erp)
or conducted
Class 1 Class 2
Radio Microphones > 250 mW 2 mW
In ear monitoring > 250 mW 2 mW
Tour guide systems 10 mW 2 mW
Aids for the handicapped 10 mW 2 mW
Radio Microphones 863 MHz to 865 MHz 10 mW 10 mW
The classes of equipment given in the present document are as follows:
- class 1 equipment would normally be considered as a category requiring an operator licence;
- class 2 equipment would be considered in some countries as not requiring an operator licence.
The types of equipment covered by the present document are as follows:
• professional hand held radio microphones;
• professional body worn radio microphones;
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped).
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit 25 MHz to 3 000 MHz
Receive 25 MHz to 3 000 MHz
ETSI
---------------------- Page: 8 ----------------------
9 ETSI EN 300 422-1 V1.3.2 (2008-03)
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ITU-R Recommendation BS.559-2: "Objective measurement of radio-frequency protection ratios
in LF, MF and HF broadcasting".
[2] IEC 60244-13: "Methods of measurement for radio transmitters; Part 13: Performance
characteristics for FM sound broadcasting".
[3] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM)
Uncertainties in the measurement of mobile radio equipment characteristics".
2.2 Informative references
[4] ETSI EN 301 357-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Cordless audio devices in the range 25 MHz to 2 000 MHz; Part 1: Technical characteristics and
test methods".
[5] ETSI I-ETS 300 422: "Radio Equipment and Systems (RES); Technical characteristics and test
methods for wireless microphones in the 25 MHz to 3 GHz frequency range".
[6] ETSI
...
Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Wireless microphones
in the 25 MHz to 3 GHz frequency range;
Part 1: Technical characteristics and
methods of measurement
---------------------- Page: 1 ----------------------
2 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
Reference
REN/ERM-TG17WG3-008-1
Keywords
audio, 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
Individual copies of the present document can be downloaded from:
http://www.etsi.org
The present document may be made available in more than one electronic version or in print. In any case of existing or
perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF).
In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive
within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
http://portal.etsi.org/chaircor/ETSI_support.asp
Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
Contents
Intellectual Property Rights.6
Foreword.6
Introduction .7
1 Scope.8
2 References.9
2.1 Normative references.9
2.2 Informative references.9
3 Definitions, symbols and abbreviations .10
3.1 Definitions.10
3.2 Symbols.11
3.3 Abbreviations.11
4 Functional characteristics.12
4.1 Radio microphone descriptions.12
4.2 In ear monitoring.12
4.3 Assistive Listening Devices (Aids for the handicapped).12
4.4 Tour Guide systems.13
5 General.13
5.1 Presentation of equipment for testing purposes.13
5.1.1 Choice of model for testing .14
5.1.2 Definitions of alignment and switching ranges.14
5.1.3 Choice of frequencies.14
5.1.4 Testing of single channel equipment .14
5.1.5 Testing of two channel equipment.14
5.1.6 Testing of multi-channel equipment (more than two channels).14
5.1.7 Testing of equipment without a permanent external RF port.14
5.1.7.1 Equipment with a permanent internal RF port .15
5.1.7.2 Equipment with a temporary RF port.15
5.2 Mechanical and electrical design.15
5.2.1 General.15
5.2.2 Controls.15
5.2.3 Performance testing with Integral antenna.15
5.2.4 Marking (equipment identification).15
5.3 Interpretation of the measurement results .15
6 Test conditions, power sources and ambient conditions .16
6.1 Normal and extreme test-conditions.16
6.2 Test power source.16
6.3 Normal test conditions.16
6.3.1 Normal temperature and humidity.16
6.3.2 Normal test power source voltage.16
6.3.2.1 Mains voltage.16
6.3.2.2 Other power sources.17
6.4 Extreme test conditions .17
6.4.1 Extreme temperatures.17
6.4.1.1 Procedures for tests at extreme temperatures .17
6.4.2 Extreme test power source voltages.17
6.4.2.1 Mains voltage.17
6.4.2.2 Other power sources.17
7 General conditions.17
7.1 Normal test modulation.17
7.1.1 Analogue systems.17
7.1.2 Digital systems.18
ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
7.2 Artificial antenna.19
7.3 Test fixture.19
7.4 Test site and general arrangements for radiated measurements.19
7.5 Modes of operation of the transmitter .19
7.6 Arrangement for test signals at the input of the transmitter .19
8 Methods of measurement and limits for transmitter parameters .20
8.1 Frequency stability .20
8.1.1 Method of measurement (analogue) .20
8.1.2 Method of measurement (digital).20
8.1.3 Limit.20
8.2 Rated output power .20
8.2.1 Method of measurement for equipment without integral antenna .20
8.2.2 Method of measurement for equipment with integral antenna.20
8.2.2.1 Method of measurement under normal test conditions .20
8.2.3 Limit.21
8.3 Necessary bandwidth.21
8.3.1 Necessary Bandwidth (BN) for Analogue Systems .21
8.3.1.1 Method of Measurement .21
8.3.1.2 Limits.22
8.3.2 Necessary Bandwidth (BN) for Digital Systems .22
8.3.2.1 Method of Measurement .22
8.3.2.2 Limits.24
8.4 Spurious emissions.25
8.4.1 Definition.25
8.4.2 Method of measurement.25
8.4.3 Limits.26
8.4.4 Measuring receiver.26
9 Receiver.26
9.1 Spurious emissions.26
9.1.1 Definitions.26
9.1.2 Method of measuring the power level in a specified load.26
9.1.3 Method of measuring the effective radiated power of the enclosure .27
9.1.4 Method of measuring the effective radiated power.27
9.1.5 Limits.27
10 Measurement uncertainty .28
Annex A (normative): Radiated measurement.29
A.1 Test sites and general arrangements for measurements involving the use of radiated fields .29
A.1.1 Anechoic Chamber.29
A.1.2 Anechoic Chamber with a conductive ground plane.30
A.1.3 Open Area Test Site (OATS) .31
A.1.4 Test antenna.32
A.1.5 Substitution antenna.32
A.1.6 Measuring antenna.33
A.1.7 Stripline arrangement.33
A.1.7.1 General.33
A.1.7.2 Description.33
A.1.7.3 Calibration.33
A.1.7.4 Mode of use .33
A.2 Guidance on the use of radiation test sites .33
A.2.1 Verification of the test site .33
A.2.2 Preparation of the EUT.33
A.2.3 Power supplies to the EUT.34
A.2.4 Volume control setting for analogue speech tests .34
A.2.5 Range length.34
A.2.6 Site preparation.35
A.3 Coupling of signals.35
A.3.1 General.35
ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
A.3.2 Data Signals.35
A.3.3 Speech and analogue signals .35
A.3.3.1 Acoustic coupler description.36
A.3.3.2 Calibration.36
A.4 Standard test position .36
A.5 Test fixture.37
A.5.1 Description.37
A.5.2 Calibration.37
A.5.3 Mode of use.38
Annex B (normative): Measurement of Necessary Bandwidth (BN) for analogue systems.39
Annex C (informative): Bibliography.40
History .41
ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM), and is now submitted for the Vote phase of the
ETSI standards Two-step Approval Procedure.
The present document has been updated in line with the advances in radio microphone technology in the digital field
and also with changes generated within CEPT in the former ERMES band for aids for the handicapped.
The present document is part 1 of a multi-part deliverable covering the Electromagnetic compatibility and Radio
spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range, as identified below:
Part 1: "Technical characteristics and methods of measurement";
Part 2: "Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive".
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): 6 months after doa
ETSI
---------------------- Page: 6 ----------------------
7 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
Introduction
In preparing the present document, much attention has been given to assure a low interference probability, while at the
same time allowing maximum flexibility and service to the end-user.
Common technical specifications and harmonized frequency allocations are expected to greatly reduce problems of
interference and illegal use.
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.
In-ear monitoring systems may be tested to either the present document (< 200 kHz max. occupied bandwidth) or to
EN 301 357-1 [4] (< 300 kHz max. occupied bandwidth) with due consideration of power and operating frequency.
Consumer radio microphones with 300 kHz occupied bandwidth can also be tested to EN 301 357-1 [4].
Since the initial adoption of I-ETS 300 422 [5] 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 EN 301 357-1 [4].
Additional standards or specifications may be required for equipment intended to interface to the Public Switched
Telephone Network (PSTN). This facility may be subjected to regulatory conditions.
ETSI
---------------------- Page: 7 ----------------------
8 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
1 Scope
The present document covers the minimum characteristics considered necessary in order to make the best use of the
available frequency spectrum for wireless microphones. The present document specifies the minimum performance
requirements and the methods of measurement of Assistive Listening Devices, radio microphones and in-ear monitoring
systems. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily
represent the optimum performance achievable.
The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz (as shown in
table 1) using analogue, digital and hybrid (using both analogue and digital) modulation. The present document does not
apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA)
modulation.
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and
eirp above 1 GHz). Equipment above 250 mW should be tested to EN 300 454-1 [6].
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 EN 301 489-9 [7].
National regulations on maximum power output will apply or those detailed in the latest version of
CEPT/ERC/REC 70-03 [11], annex 10 (see http://www.erodocdb.dk/).
Equipment effective radiated power (erp)
or conducted
Class 1 Class 2
Radio Microphones > 250 mW 2 mW
In ear monitoring > 250 mW 2 mW
Tour guide systems 10 mW 2 mW
Aids for the handicapped 10 mW 2 mW
Radio Microphones 863 MHz to 865 MHz 10 mW 10 mW
The classes of equipment given in the present document are as follows:
- class 1 equipment would normally be considered as a category requiring an operator licence;
- class 2 equipment would be considered in some countries as not requiring an operator licence.
The types of equipment covered by the present document are as follows:
• professional hand held radio microphones;
• professional body worn radio microphones;
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped).
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit 25 MHz to 3 000 MHz
Receive 25 MHz to 3 000 MHz
ETSI
---------------------- Page: 8 ----------------------
9 Final draft ETSI EN 300 422-1 V1.3.2 (2008-01)
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the purposes
of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and use of upper
case and lower case letters.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ITU-R Recommendation BS.559-2: "Objective measurement of radio-frequency protection ratios
in LF, MF and HF broadcasting".
[2] IEC 60244-13: "Methods of measurement for radio transmitters; Part 13: Performance
characteristics for FM sound broadcasting".
[3] ETSI TR 100 028 (all parts): "Electromagnetic compatibility and Radio spectrum Matters (ERM)
Uncertainties in the measurement of mobile radio equipment characteristics".
2.2 Informative references
[4] ETSI EN 301 357-1: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Cordless audio devices in the range 25 MHz to 2 000 MHz; Part 1: Technical characteristics and
test met
...
SLOVENSKI STANDARD
SIST EN 300 422-1 V1.3.2:2008
01-september-2008
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Electromagnetic compatibility and Radio spectrum Matters (ERM) - Wireless
microphones in the 25 MHz to 3 GHz frequency range - Part 1: Technical characteristics
and methods of measurement
Ta slovenski standard je istoveten z: EN 300 422-1 Version 1.3.2
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
33.160.50 Pribor Accessories
SIST EN 300 422-1 V1.3.2:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 300 422-1 V1.3.2:2008
---------------------- Page: 2 ----------------------
SIST EN 300 422-1 V1.3.2:2008
ETSI EN 300 422-1 V1.3.2 (2008-03)
European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Wireless microphones
in the 25 MHz to 3 GHz frequency range;
Part 1: Technical characteristics and
methods of measurement
---------------------- Page: 3 ----------------------
SIST EN 300 422-1 V1.3.2:2008
2 ETSI EN 300 422-1 V1.3.2 (2008-03)
Reference
REN/ERM-TG17WG3-008-1
Keywords
audio, radio, radio MIC, testing
ETSI
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Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
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Users of the present document should be aware that the document may be subject to revision or change of status.
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2008.
All rights reserved.
TM TM TM TM
DECT , PLUGTESTS , UMTS , TIPHON , the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered
for the benefit of its Members.
TM
3GPP is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners.
ETSI
---------------------- Page: 4 ----------------------
SIST EN 300 422-1 V1.3.2:2008
3 ETSI EN 300 422-1 V1.3.2 (2008-03)
Contents
Intellectual Property Rights.6
Foreword.6
Introduction .7
1 Scope.8
2 References.9
2.1 Normative references.9
2.2 Informative references.9
3 Definitions, symbols and abbreviations .10
3.1 Definitions.10
3.2 Symbols.11
3.3 Abbreviations.11
4 Functional characteristics.12
4.1 Radio microphone descriptions.12
4.2 In ear monitoring.12
4.3 Assistive Listening Devices (Aids for the handicapped).12
4.4 Tour Guide systems.13
5 General.13
5.1 Presentation of equipment for testing purposes.13
5.1.1 Choice of model for testing .14
5.1.2 Definitions of alignment and switching ranges.14
5.1.3 Choice of frequencies.14
5.1.4 Testing of single channel equipment .14
5.1.5 Testing of two channel equipment.14
5.1.6 Testing of multi-channel equipment (more than two channels).14
5.1.7 Testing of equipment without a permanent external RF port.14
5.1.7.1 Equipment with a permanent internal RF port .15
5.1.7.2 Equipment with a temporary RF port.15
5.2 Mechanical and electrical design.15
5.2.1 General.15
5.2.2 Controls.15
5.2.3 Performance testing with Integral antenna.15
5.2.4 Marking (equipment identification).15
5.3 Interpretation of the measurement results .15
6 Test conditions, power sources and ambient conditions .16
6.1 Normal and extreme test-conditions.16
6.2 Test power source.16
6.3 Normal test conditions.16
6.3.1 Normal temperature and humidity.16
6.3.2 Normal test power source voltage.16
6.3.2.1 Mains voltage.16
6.3.2.2 Other power sources.17
6.4 Extreme test conditions .17
6.4.1 Extreme temperatures.17
6.4.1.1 Procedures for tests at extreme temperatures .17
6.4.2 Extreme test power source voltages.17
6.4.2.1 Mains voltage.17
6.4.2.2 Other power sources.17
7 General conditions.17
7.1 Normal test modulation.17
7.1.1 Analogue systems.17
7.1.2 Digital systems.18
ETSI
---------------------- Page: 5 ----------------------
SIST EN 300 422-1 V1.3.2:2008
4 ETSI EN 300 422-1 V1.3.2 (2008-03)
7.2 Artificial antenna.19
7.3 Test fixture.19
7.4 Test site and general arrangements for radiated measurements.19
7.5 Modes of operation of the transmitter .19
7.6 Arrangement for test signals at the input of the transmitter .19
8 Methods of measurement and limits for transmitter parameters .20
8.1 Frequency stability .20
8.1.1 Method of measurement (analogue) .20
8.1.2 Method of measurement (digital).20
8.1.3 Limit.20
8.2 Rated output power .20
8.2.1 Method of measurement for equipment without integral antenna .20
8.2.2 Method of measurement for equipment with integral antenna.20
8.2.2.1 Method of measurement under normal test conditions .20
8.2.3 Limit.21
8.3 Necessary bandwidth.21
8.3.1 Necessary Bandwidth (BN) for Analogue Systems .21
8.3.1.1 Method of Measurement .21
8.3.1.2 Limits.22
8.3.2 Necessary Bandwidth (BN) for Digital Systems .22
8.3.2.1 Method of Measurement .22
8.3.2.2 Limits.24
8.4 Spurious emissions.25
8.4.1 Definition.25
8.4.2 Method of measurement.25
8.4.3 Limits.26
8.4.4 Measuring receiver.26
9 Receiver.26
9.1 Spurious emissions.26
9.1.1 Definitions.26
9.1.2 Method of measuring the power level in a specified load.26
9.1.3 Method of measuring the effective radiated power of the enclosure .27
9.1.4 Method of measuring the effective radiated power.27
9.1.5 Limits.27
10 Measurement uncertainty .28
Annex A (normative): Radiated measurement.29
A.1 Test sites and general arrangements for measurements involving the use of radiated fields .29
A.1.1 Anechoic Chamber.29
A.1.2 Anechoic Chamber with a conductive ground plane.30
A.1.3 Open Area Test Site (OATS) .31
A.1.4 Test antenna.32
A.1.5 Substitution antenna.32
A.1.6 Measuring antenna.33
A.1.7 Stripline arrangement.33
A.1.7.1 General.33
A.1.7.2 Description.33
A.1.7.3 Calibration.33
A.1.7.4 Mode of use .33
A.2 Guidance on the use of radiation test sites .33
A.2.1 Verification of the test site .33
A.2.2 Preparation of the EUT.33
A.2.3 Power supplies to the EUT.34
A.2.4 Volume control setting for analogue speech tests .34
A.2.5 Range length.34
A.2.6 Site preparation.35
A.3 Coupling of signals.35
A.3.1 General.35
ETSI
---------------------- Page: 6 ----------------------
SIST EN 300 422-1 V1.3.2:2008
5 ETSI EN 300 422-1 V1.3.2 (2008-03)
A.3.2 Data Signals.35
A.3.3 Speech and analogue signals .35
A.3.3.1 Acoustic coupler description.36
A.3.3.2 Calibration.36
A.4 Standard test position .36
A.5 Test fixture.37
A.5.1 Description.37
A.5.2 Calibration.37
A.5.3 Mode of use.38
Annex B (normative): Measurement of Necessary Bandwidth (BN) for analogue systems.39
Annex C (informative): Bibliography.40
History .41
ETSI
---------------------- Page: 7 ----------------------
SIST EN 300 422-1 V1.3.2:2008
6 ETSI EN 300 422-1 V1.3.2 (2008-03)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document has been updated in line with the advances in radio microphone technology in the digital field
and also with changes generated within CEPT in the former ERMES band for aids for the handicapped.
The present document is part 1 of a multi-part deliverable covering the Electromagnetic compatibility and Radio
spectrum Matters (ERM); Wireless microphones in the 25 MHz to 3 GHz frequency range, as identified below:
Part 1: "Technical characteristics and methods of measurement";
Part 2: "Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive".
National transposition dates
Date of adoption of this EN: 14 March 2008
Date of latest announcement of this EN (doa): 30 June 2008
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2008
Date of withdrawal of any conflicting National Standard (dow): 31 December 2008
ETSI
---------------------- Page: 8 ----------------------
SIST EN 300 422-1 V1.3.2:2008
7 ETSI EN 300 422-1 V1.3.2 (2008-03)
Introduction
In preparing the present document, much attention has been given to assure a low interference probability, while at the
same time allowing maximum flexibility and service to the end-user.
Common technical specifications and harmonized frequency allocations are expected to greatly reduce problems of
interference and illegal use.
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.
In-ear monitoring systems may be tested to either the present document (< 200 kHz max. occupied bandwidth) or to
EN 301 357-1 [4] (< 300 kHz max. occupied bandwidth) with due consideration of power and operating frequency.
Consumer radio microphones with 300 kHz occupied bandwidth can also be tested to EN 301 357-1 [4].
Since the initial adoption of I-ETS 300 422 [5] 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 EN 301 357-1 [4].
Additional standards or specifications may be required for equipment intended to interface to the Public Switched
Telephone Network (PSTN). This facility may be subjected to regulatory conditions.
ETSI
---------------------- Page: 9 ----------------------
SIST EN 300 422-1 V1.3.2:2008
8 ETSI EN 300 422-1 V1.3.2 (2008-03)
1 Scope
The present document covers the minimum characteristics considered necessary in order to make the best use of the
available frequency spectrum for wireless microphones. The present document specifies the minimum performance
requirements and the methods of measurement of Assistive Listening Devices, radio microphones and in-ear monitoring
systems. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily
represent the optimum performance achievable.
The present document applies to equipment operating on radio frequencies between 25 MHz and 3 GHz (as shown in
table 1) using analogue, digital and hybrid (using both analogue and digital) modulation. The present document does not
apply to radio microphones or in ear monitoring equipment employing Time Division Multiple Access (TDMA)
modulation.
The maximum power recommended for equipment covered by the present document is 250 mW (erp below 1 GHz and
eirp above 1 GHz). Equipment above 250 mW should be tested to EN 300 454-1 [6].
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 EN 301 489-9 [7].
National regulations on maximum power output will apply or those detailed in the latest version of
CEPT/ERC/REC 70-03 [11], annex 10 (see http://www.erodocdb.dk/).
Equipment effective radiated power (erp)
or conducted
Class 1 Class 2
Radio Microphones > 250 mW 2 mW
In ear monitoring > 250 mW 2 mW
Tour guide systems 10 mW 2 mW
Aids for the handicapped 10 mW 2 mW
Radio Microphones 863 MHz to 865 MHz 10 mW 10 mW
The classes of equipment given in the present document are as follows:
- class 1 equipment would normally be considered as a category requiring an operator licence;
- class 2 equipment would be considered in some countries as not requiring an operator licence.
The types of equipment covered by the present document are as follows:
• professional hand held radio microphones;
• professional body worn radio microphones;
• in ear monitoring systems;
• consumer radio microphones;
• tour guide systems; and
• Assistive Listening Devices (Aids for the handicapped).
Table 1: Radiocommunications service frequency bands
Radiocommunications service frequency bands
Transmit 25 MHz to 3 000 MHz
Receive 25 MHz to 3 000 MHz
ETSI
---------------------- Page: 10 ----------------------
SIST EN 300 422-1 V1.3.2:2008
9 ETSI EN 300 422-1 V1.3.2 (2008-03)
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably,
the primary source of the referenced document should be cited, in order to ensure traceability. Furthermore, the
reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the
method of access to the referenced document and the full network address, with the same punctuation and
...
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