SIST EN 301 357-2 V1.3.1:2006

• Abstract:

  The present document covers Cordless audio devices considered by definition short-range devices.; • the present document applies to cordless audio consumer radio microphones, in ear monitoring equipment using either 300 kHz bandwidth analogue modulation; or; • 300 kHz, 600 kHz; or; • 1200 kHz digital FDMA modulation; and; • Band II LPD (low power devices) using 200 kHz bandwidth and analogue modulation.; The frequency bands for this equipment may differ from country to country as specified in their national regulations. All equipment is intended to be used with integral antennas. The types of equipment covered by the present document are as follows:; • cordless headphones;; • cordless loudspeakers;; • consumer radio microphones;; • in-ear monitoring;; • in-vehicle cordless;; • personal cordless;; • broadband multi channel audio systems;; • Band II LPD.; The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive), article 3.2, which states that "….. radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference". In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of Article 3 of the R&TTE Directive may apply to equipment within the scope of the present document.

• Status: Published
• Publication Date: 30-Sep-2006
• ICS: 33.060.99 - Other equipment for radiocommunications
• ICS: 33.100.01 - Electromagnetic compatibility in general
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-2006
• Due Date: 01-Oct-2006
• Completion Date: 01-Oct-2006
• Directive: 1999/5/EC - Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity
• Directive:

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  2005-01-1864 - Pravilnik o radijskih frekvencah, ki se smejo uporabljati brez odločbe o dodelitvi radijskih frekvenc
• Mandate: M/284
• Ref Project: ETSI EN 301 357-2 V1.3.1 (2006-05) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Cordless audio devices in the range 25 MHz to 2 000 MHz; Part 2: Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive

• Official Journal Project Relation: SIST EN 301 357-2 V1.4.1:2009 - Electromagnetic compatibility and Radio spectrum Matters (ERM) - Cordless audio devices in the range 25 MHz to 2 000 MHz - Part 2: Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive
• Effective Date: 06-Jan-2010
• Official Journal Project Relation: SIST EN 301 357-2:2002 - Electromagnetic compatibility and Radio spectrum Matters (ERM); Cordless audio devices in the range 25 MHz to 2 000 MHz; Consumer radio microphones and in-ear monitoring systems operating in the CEPT harmonized band 863 MHz to 865 MHz; Part 2: Harmonized EN under article 3.2 of the R&TTE Directive
• Effective Date: 01-Dec-2009

Overview

SIST EN 301 357-2 V1.3.1:2006 is a harmonized European Standard governing the electromagnetic compatibility and radio spectrum use of cordless audio devices operating between 25 MHz and 2,000 MHz. Developed by the Slovenian Institute for Standardization (SIST) in alignment with ETSI, this standard ensures that short-range audio transmitters such as wireless microphones, in-ear monitors, and cordless loudspeakers meet the essential requirements for efficient spectrum use and minimal interference.

This part of the standard specifically addresses the requirements set out in Article 3.2 of the R&TTE Directive (1999/5/EC), ensuring radio equipment is constructed to use the allocated radio spectrum efficiently and without causing harmful interference. The scope includes both analogue and digital modulation devices within the specified frequency ranges, with an emphasis on consumer-grade audio equipment.

Key Topics

• Scope of Equipment:

  • Applies to consumer cordless audio devices including:
    • Cordless headphones
    • Cordless loudspeakers
    • Radio microphones
    • In-ear monitoring systems
    • Personal and in-vehicle cordless audio
    • Broadband multi-channel audio systems
    • Band II low power devices (LPD)

• Technical Requirements:

  • Equipment must operate within the designated frequency bands, subject to national variations.
  • Integral antennas are mandatory for all covered devices.
  • Modulation types supported include:
    • 300 kHz bandwidth for analogue equipment
    • 300, 600, or 1200 kHz for digital equipment using FDMA
    • 200 kHz analogue for Band II LPD

• Conformance Testing:

  • Testing includes transmitter and receiver performance, spurious emissions, frequency error, and channel bandwidth.
  • Prescribed test suites ensure compliance with essential radio requirements.

• Harmonization:

  • The standard supports the mutual recognition of conformity for radio equipment across European markets.

Applications

SIST EN 301 357-2 V1.3.1:2006 is critical across a wide range of practical audio and broadcast applications, including:

• Live Performances: Ensuring wireless microphones and in-ear monitors function without cross-channel interference, vital for concerts, theater, and events.
• Consumer Electronics: Governing wireless headphones and loudspeakers, delivering high-quality audio with reliable connectivity in homes and vehicles.
• Broadcast and Media Production: Providing guidelines for multi-channel audio systems within studios and on-location productions.
• Automotive and Personal Audio: Supporting in-vehicle and personal-use cordless devices, maintaining compatibility and minimizing radio interference.

Adoption of this standard is essential for manufacturers to access European and wider international markets, demonstrating that devices meet strict requirements for electromagnetic compatibility and radio spectrum efficiency.

Related Standards

Manufacturers and professionals should be aware of several related standards and directives relevant to cordless audio devices:

• EN 301 357-1: Outlines the technical characteristics and test methods for cordless audio devices in the same frequency range.
• Directive 1999/5/EC (R&TTE): The overarching European directive on radio equipment and telecommunications terminal equipment.
• ETSI TR 100 028: Addresses uncertainties in the measurement of mobile radio equipment characteristics.

For comprehensive compliance, devices may need to adhere to additional EN standards that address other essential requirements under different parts of Article 3 of the R&TTE Directive, such as safety and electromagnetic compatibility.

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By aligning with SIST EN 301 357-2 V1.3.1:2006, manufacturers not only ensure legal compliance and interoperability but also deliver reliable, interference-free cordless audio devices to the European marketplace. This harmonized standard is pivotal in maintaining a competitive edge and ensuring the best user experience for wireless audio technology.

SLOVENSKI STANDARD
01-oktober-2006
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%UH]YUYLþQHDYGLRQDSUDYHGHOXMRþHYREPRþMXRG0+]GR0+]±GHO
+DUPRQL]LUDQL(1NL]DMHPDELVWYHQH]DKWHYHþOHQDGLUHNWLYH5 77(
Electromagnetic compatibility and Radio spectrum Matters (ERM); Cordless audio
devices in the range 25 MHz to 2 000 MHz; Part 2: Harmonized EN covering essential
requirements of article 3.2 of the R&TTE Directive
Ta slovenski standard je istoveten z: EN 301 357-2 Version 1.3.1
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI EN 301 357-2 V1.3.1 (2006-07)
Harmonized European Standard (Telecommunications series)

Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Cordless audio devices in the range 25 MHz to 2 000 MHz;
Part 2: Harmonized EN covering essential requirements
of article 3.2 of the R&TTE Directive

2 ETSI EN 301 357-2 V1.3.1 (2006-07)

Reference
REN/ERM-TG17WG3-007-2
Keywords
audio, radio, radio MIC, testing
ETSI
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ETSI
3 ETSI EN 301 357-2 V1.3.1 (2006-07)
Contents
Intellectual Property Rights.4
Foreword.4
Introduction .4
1 Scope.5
2 References.5
3 Definitions, symbols and abbreviations .6
3.1 Definitions.6
3.2 Symbols.6
3.3 Abbreviations.7
4 Technical requirements specifications.7
4.1 Environmental profile.7
4.2 Conformance requirements.7
4.2.1 Transmitter requirements for Band II LPD.7
4.2.1.1 Basic requirements for Band II LPB .7
4.2.1.2 Effective radiated power, occupied bandwidth, channel spacing, frequency error and transmitter
timeout .7
4.2.1.3 Radiated spurious emissions .7
4.2.2 Frequency error.7
4.2.3 Carrier power.7
4.2.4 Channel bandwidth.8
4.2.5 Spurious emissions and cabinet radiation .8
4.2.6 Cordless audio transmitter shutoff .8
4.2.7 Receiver spurious emissions and cabinet radiation.8
5 Testing for compliance with technical requirements.8
5.1 Environmental conditions for testing .8
5.2 Interpretation of the measurement results .8
5.3 Essential radio test suites.9
5.3.1 Transmitter test suites for Band II LPD.9
5.3.2 Frequency error.9
5.3.3 Carrier power.9
5.3.4 Channel bandwidth.9
5.3.5 Radiated spurious emissions and cabinet radiation.9
5.3.6 Cordless audio transmitter shutoff .9
5.3.7 Receiver spurious emissions and cabinet radiation.9
Annex A (normative): HS Requirement and conformance Test specifications Table (HS-
RTT).10
Annex B (informative): The EN title in the official languages .12
Annex C (informative): Bibliography.13
History .14

ETSI
4 ETSI EN 301 357-2 V1.3.1 (2006-07)
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 Harmonized European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document has been produced by ETSI in response to a mandate from the European Commission issued
under Council Directive 98/34/EC(as amended) laying down a procedure for the provision of information in the field of
technical standards and regulations.
The present document is intended to become a Harmonized Standard, the reference of which will be published in the
Official Journal of the European Communities referencing the Directive 1999/5/EC [1] of the European Parliament and
of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual
recognition of their conformity ("the R&TTE Directive").
Technical specifications relevant to Directive 1999/5/EC are given in annex
The present document is part 2, of a multi-part deliverable covering Cordless audio devices in the range 25 MHz to
2 000 MHz, as identified below:
Part 1: "Technical characteristics and test methods";
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: 21 July 2006
Date of latest announcement of this EN (doa): 31 October 2006
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 April 2007
Date of withdrawal of any conflicting National Standard (dow): 30 April 2008

Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the R&TTE Directive. The modular
structure is shown in EG 201 399.
ETSI
5 ETSI EN 301 357-2 V1.3.1 (2006-07)
1 Scope
The present document covers Cordless audio devices considered by definition short-range devices.
• the present document applies to cordless audio consumer radio microphones, in ear monitoring equipment
using either 300 kHz bandwidth analogue modulation; or
• 300 kHz, 600 kHz; or
• 1200 kHz digital FDMA modulation; and
• Band II LPD (low power devices) using 200 kHz bandwidth and analogue modulation.
The frequency bands for this equipment may differ from country to country as specified in their national regulations.
All equipment is intended to be used with integral antennas.
The types of equipment covered by the present document are as follows:
• cordless headphones;
• cordless loudspeakers;
• consumer radio microphones;
• in-ear monitoring;
• in-vehicle cordless;
• personal cordless;
• broadband multi channel audio systems;
• Band II LPD.
The present document is intended to cover the provisions of Directive 1999/5/EC [1] (R&TTE Directive), article 3.2,
which states that "…. radio equipment shall be so constructed that it effectively uses the spectrum allocated to
terrestrial/space radio communications and orbital resources so as to avoid harmful interference".
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of Article 3 of the R&TTE Directive may apply to equipment within the scope of the present
document.
NOTE: A list of such ENs is included on the web site http://www.newapproach.org.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• 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.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio
equipment and telecommunications terminal equipment and the mutual recognition of their
conformity (R&TTE Directive).
ETSI
6 ETSI EN 301 357-2 V1.3.1 (2006-07)
[2] ETSI EN 301 357-1 (V1.3.1): "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".
[3] Void.
[4] ETSI TR 100 028 (all parts - V1.4.1): "Electromagnetic compatibility and Radio spectrum Matters
(ERM); Uncertainties in the measurement of mobile radio equipment characteristics".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
artificial antenna: tuned reduced-radiating dummy load equal to the nominal impedance specified by the applicant
integral antenna: antenna, with or without a connector, designed as, and declared as by the manufacturer, an
indispensable part of the equipment
integral antenna for Band II LPD only: permanent fixed antenna, which may be built-in, designed as an
indispensable part of the equipment
necessary bandwidth: is, for a given class of emission, the width of the frequency band which is just sufficient to
ensure the transmission of information at the rate and with the quality required under specified conditions
NOTE: However, the necessary bandwidths of most digital modulation formats are presently not referred to
ITU-R Recommendations of SM series.
port: any connection point on or within the Equipment Under Test (EUT) intended for the connection of cables to or
from that equipment
radiated measurements: measurements that involve the absolute measurement of a radiated electromagnetic field
spurious emission: emission on a frequency or frequencies which are outside the necessary bandwidth and the level of
which may be reduced without affecting the corresponding transmission of information. Spurious emissions include
harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
µW micro Watt
Ω ohm
dBc dB relative to the carrier level
E field strength
GHz Giga Hertz
kHz kilo Hertz
MHz Mega Hertz
mW milli Watt
nW nano Watt
ETSI
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