SIST EN 301 357-2:2002
(Main)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
- Abstract
To bring the published EN 301 357 in line with the R&TTE Directive. To expand the EN 301 357 to the use of digital audio.
- Status
- Published
- Publication Date
- 31-Oct-2002
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Nov-2002
- Due Date
- 01-Nov-2002
- Completion Date
- 01-Nov-2002
- Mandate
- M/284
SIST EN 301 357-2:2002 is the SIST adoption of ETSI EN 301 357-2 V1.2.1, a Harmonized European Standard for cordless audio devices, consumer radio microphones and in-ear monitoring systems in the CEPT harmonized band 863 MHz to 865 MHz. It specifies the radio spectrum and compliance requirements used under article 3.2 of the R&TTE Directive, and it extends the earlier EN 301 357 to digital audio.
What does SIST EN 301 357-2:2002 specify?
SIST EN 301 357-2:2002 specifies the minimum characteristics and compliance tests for short-range cordless audio equipment so that it uses spectrum efficiently and avoids harmful interference. It is written as part 2 of a multi-part deliverable, and it relies on Part 1 for the detailed technical characteristics and test methods.
The scope covers cordless audio, consumer radio microphones and in-ear monitoring equipment using either 300 kHz bandwidth with analogue modulation or 300 kHz, 600 kHz or 1 200 kHz digital FDMA modulation. The equipment is intended to use integral antennas, and the frequency bands may vary by country according to national regulations.
The document is organized into:
- Clause 1 Scope
- Clause 2 References
- Clause 3 Definitions, symbols and abbreviations
- Clause 4 Functional characteristics
- Clause 5 Testing for compliance with technical requirements
- Clause 6 Interpretation of the measurement results
What are the key requirements of SIST EN 301 357-2:2002?
SIST EN 301 357-2:2002 focuses on practical design features, transmitter and receiver limits, and how to test and judge compliance. The most important requirements are in Clauses 4 to 6.
- Clause 4.1 - Controls: controls that could increase interference if misadjusted must only be accessible by disassembly with tools. In practice, this limits accidental or casual changes that could move the equipment out of compliance.
- Clause 4.2 - Marking: the equipment must carry visible, legible, durable and tamper-proof marking in line with the R&TTE Directive. This gives traceability and helps users and inspectors identify compliant equipment.
- Clauses 4.3.1 to 4.3.4 - Transmitter limits: frequency error, carrier power, channel bandwidth and spurious emissions must stay within the limits taken from EN 301 357-1. For a manufacturer, this means checking the transmitter against the linked tables and figures in Part 1.
- Clause 4.4.1 - Receiver emissions: receiver spurious emissions must also stay within the Part 1 limits. This matters because unwanted receiver emissions can still affect other radio services.
- Clause 5.1.1 - Test conditions: normal and extreme test conditions are declared by the manufacturer, and the test procedures come from EN 301 357-1. Labs therefore test the product in the conditions the manufacturer claims.
- Clause 5.1.2 to 5.1.4 - Test suites: the standard sets the essential transmitter and receiver test suites, including frequency error, carrier power, channel bandwidth and spurious emissions. This tells a lab which measurements must be made for conformity evidence.
- Clause 6 - Measurement interpretation: the measured value is compared with the limit, and measurement uncertainty must be reported separately. The uncertainty of the test system must stay within the stated figures, using the ETR 028 method with the stated coverage factor. This is important for test reports and for deciding pass or fail consistently.
What terms does SIST EN 301 357-2:2002 define?
- R&TTE Directive - Directive 1999/5/EC, the legal framework for radio equipment and telecommunications terminal equipment named by the standard.
- EMC - Electromagnetic compatibility, meaning the equipment must work without creating or suffering unacceptable interference.
- ERM - Electromagnetic compatibility and Radio spectrum Matters, the ETSI technical area that produced this standard.
- CEPT - The European Conference of Postal and Telecommunications Administrations, which is named for the harmonized 863 MHz to 865 MHz band.
- FDMA - Frequency Division Multiple Access, the digital modulation approach named in the scope for this equipment.
- SRD - Short Range Devices, the class of equipment used in the frequency-use reference CEPT/ERC/REC 70-03.
Who uses SIST EN 301 357-2:2002?
Manufacturers of cordless headphones, cordless loudspeakers, consumer radio microphones, in-ear monitoring systems, in-vehicle cordless devices, personal cordless devices and broadband multi-channel audio systems use this standard to design and verify products. Test laboratories use it to choose the right measurements, test conditions and uncertainty reporting for spectrum compliance.
It is also used by conformity-assessment teams, quality managers and regulators who need a shared basis for checking article 3.2 spectrum use under the R&TTE Directive. Buyers can use it as a technical reference when they need equipment intended for regulated radio use in this band.
What changed in SIST EN 301 357-2:2002 from the previous edition?
SIST EN 301 357-2:2002 brings EN 301 357 into line with the R&TTE Directive and expands it to cover digital audio. The scope also includes digital FDMA modulation alongside the analogue 300 kHz case.
Which standards are used with SIST EN 301 357-2:2002?
- Directive 1999/5/EC - provides the legal basis for the harmonized standard and the article 3.2 spectrum requirement.
- CEPT/ERC/REC 70-03 - gives the short-range device framework and the band-use context for these devices.
- ETSI EN 301 489-9 - covers EMC requirements for wireless microphones and similar RF audio link equipment.
- ETSI ETR 028 - provides the method used to calculate measurement uncertainty.
- Directive 98/34/EC - is cited in the foreword as the mandate framework for technical standards and regulations.
- ETSI EN 301 357-1 - supplies the technical characteristics, limit tables, figures, sample selection details and test methods used throughout Part 2.
What does the SIST EN 301 357-2:2002 document contain?
SIST EN 301 357-2:2002 contains the framework for conformity assessment rather than product design guidance. It includes the modular-structure introduction, the scope and references, definitions and abbreviations, functional characteristics, compliance test suites, and the rules for interpreting measurement results.
The technical content is built around transmitter and receiver checks for frequency error, carrier power, channel bandwidth and spurious emissions. It also includes a measurement uncertainty table and the reporting rules that test labs use in their test reports.
Relations
- Official Journal Project Relation
SIST EN 301 357-2 V1.3.1:2006 - 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
- 01-Dec-2009
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Frequently Asked Questions
SIST EN 301 357-2:2002 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "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". This standard covers: To bring the published EN 301 357 in line with the R&TTE Directive. To expand the EN 301 357 to the use of digital audio.
To bring the published EN 301 357 in line with the R&TTE Directive. To expand the EN 301 357 to the use of digital audio.
SIST EN 301 357-2:2002 is classified under the following ICS (International Classification for Standards) categories: 33.060.99 - Other equipment for radiocommunications; 33.100.01 - Electromagnetic compatibility in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 357-2:2002 has the following relationships with other standards: It is inter standard links to SIST EN 301 357-2 V1.3.1:2006. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 301 357-2:2002 is associated with the following European legislation: EU Directives/Regulations: 1999/5/EC, 2005-01-1864; Standardization Mandates: M/284. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN 301 357-2:2002 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2002
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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
Ta slovenski standard je istoveten z: EN 301 357-2 Version 1.2.1
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 V1.2.1 (2001-06)
Candidate Harmonized European Standard (Telecommunications series)
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
2 ETSI EN 301 357-2 V1.2.1 (2001-06)
Reference
REN/ERM-RP08-0309-4
Keywords
audio, radio, radio mic, regulation, testing
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The present document may be made available in more than one electronic version or in print. In any case of existing or
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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 2001.
All rights reserved.
ETSI
3 ETSI EN 301 357-2 V1.2.1 (2001-06)
Contents
Intellectual Property Rights .4
Foreword.4
Introduction.5
1 Scope.7
2 References.7
3 Definitions, symbols and abbreviations .8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations. 8
4 Functional characteristics.8
4.1 Controls . 8
4.2 Marking . 8
4.3 Transmitter requirements. 8
4.3.1 Frequency error. 8
4.3.2 Carrier power. 9
4.3.3 Channel bandwidth . 9
4.3.4 Spurious emissions. 9
4.4 Receiver requirements. 9
4.4.1 Spurious emissions. 9
5 Testing for compliance with technical requirements .9
5.1 Essential radio test suites . 9
5.1.1 Environmental conditions for testing . 9
5.1.1.1 Normal and extreme test-conditions . 9
5.1.1.2 Test power source. 9
5.1.2 Choice of samples for test suites. 9
5.1.3 Transmitter test suites . 9
5.1.3.1 Frequency error . 9
5.1.3.2 Carrier power . 9
5.1.3.3 Channel bandwidth. 10
5.1.3.4 Spurious emissions . 10
5.1.4 Receiver test suites. 10
5.1.4.1 Spurious emissions . 10
6 Interpretation of the measurement results .10
History .11
ETSI
4 ETSI EN 301 357-2 V1.2.1 (2001-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://www.etsi.org/ipr).
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 Candidate 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 [5] 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").
The present document is part 2 of a multi-part deliverable covering Cordless audio devices in the range 25 MHz to
2 000 MHz, Consumer radio microphones and in ear monitoring devices in the CEPT harmonized band 863-865 MHz,
as identified below:
Part 1: "Technical characteristics and test methods";
Part 2: "Harmonized EN under article 3.2 of the R&TTE Directive".
National transposition dates
Date of adoption of this EN: 15 June 2001
Date of latest announcement of this EN (doa): 30 September 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 2002
Date of withdrawal of any conflicting National Standard (dow): 31 March 2003
ETSI
5 ETSI EN 301 357-2 V1.2.1 (2001-06)
Introduction
The present document is part of a set of standards designed to fit in a modular structure to cover all radio and
telecommunications terminal equipment under the R&TTE Directive [1]. Each standard is a module in the structure.
The modular structure is shown in figure 1.
Disability*
3.3f
Emergency*
3.3e
Fraud*
3.3d
3.3c
Privacy*
No harm to the network*
3.3b
* If needed
Scoped by
Inter-working via the network*
equipment
3.3a class or type
Inter-working with the network
Use of spectrum
3.2
Scoped by frequency and/or equipment type
Proposed general standard
Radio product EMC
Proposed single standard
New standard for Health for radio
3.1a/b (if needed)
Standards notified under EMC Directive
Standards notified under LVD Directive
(incl acoustic safety if needed)
Non-radio Radio (RE)
TTE Non-TTE
Figure 1: Modular structure for the various standards used under the R&TTE Directive
ETSI
...



