SIST EN 301 357-1 V1.3.1:2006
(Main)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
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
The present document covers the minimum characteristics considered necessary in order to make the best use of the available frequencies. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.
Cordless audio devices covered within the present document are considered by definition short-range devices, the power limits for frequency bands will be found in the current version of CEPT/ERC/REC 70-03, annex 13 (or national regulations). Stereo equipment can be designed for required channel bandwidths of 200 kHz or less, however consumer wideband (multi channel) audio equipment and stereo equipment using e.g. Zenith-GE pilot tone systems or digital modulation may need wider bandwidths as defined in the present document. 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, 1 200 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.
Consumer audio equipment intended for audio and voice operating below 50 MHz and using narrow band modulation are considered and tested according to EN 300 220 [6].
Electromagnetic Compatibility (EMC) requirements are covered by EN 301 489-9 [3].
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.
Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) – Brezvrvične avdio naprave za frekvenčno območje od 25 MHz do 2 000 MHz – 1. del: Tehnične karakteristike in preskusne metode
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 301 357-1 V1.3.1:2006
01-oktober-2006
(OHNWURPDJQHWQD]GUXåOMLYRVWLQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP (50 ±
%UH]YUYLþQHDYGLRQDSUDYH]DIUHNYHQþQRREPRþMHRG0+]GR0+]±
GHO 7HKQLþQHNDUDNWHULVWLNHLQSUHVNXVQHPHWRGH
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
Ta slovenski standard je istoveten z: EN 301 357-1 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
SIST EN 301 357-1 V1.3.1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN 301 357-1 V1.3.1:2006
---------------------- Page: 2 ----------------------
SIST EN 301 357-1 V1.3.1:2006
ETSI EN 301 357-1 V1.3.1 (2006-07)
European Standard (Telecommunications series)
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
---------------------- Page: 3 ----------------------
SIST EN 301 357-1 V1.3.1:2006
2 ETSI EN 301 357-1 V1.3.1 (2006-07)
Reference
REN/ERM-TG17WG3-007-1
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 2006.
All rights reserved.
TM TM TM
DECT , PLUGTESTS and UMTS are Trade Marks of ETSI registered for the benefit of its Members.
TM
TIPHON and the TIPHON logo are Trade Marks currently being registered by ETSI 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 301 357-1 V1.3.1:2006
3 ETSI EN 301 357-1 V1.3.1 (2006-07)
Contents
Intellectual Property Rights.7
Foreword.7
Introduction .8
1 Scope.9
2 References.10
3 Definitions, symbols and abbreviations .11
3.1 Definitions.11
3.2 Symbols.11
3.3 Abbreviations.12
4 Functional characteristics.12
4.1 Cordless audio.12
4.1.1 In-vehicle cordless.12
4.1.2 Personal cordless.12
4.1.3 Broadband multi channel systems .12
4.1.4 Band II LPD.13
4.2 Consumer radio microphones.13
4.3 In-ear monitoring.13
5 General.13
5.1 Presentation of equipment for testing purposes.13
5.1.1 Choice of model for performance testing .14
5.1.2 Definitions of alignment and switching ranges.14
5.1.3 Alignment Range.14
5.1.4 Choice of frequencies.14
5.1.5 Testing of single channel equipment .14
5.1.6 Testing of two channel equipment.14
5.1.7 Testing of multi-channel equipment (more than two channels).14
5.1.8 Testing of equipment with an external frequency control.15
5.1.9 Testing of equipment with an integral antenna.15
5.1.9.1 Equipment with a permanent internal RF port .15
5.1.9.2 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 Integral antenna.15
5.2.4 Marking.16
5.3 Interpretation of the measurement results .16
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.17
6.3.2 Normal test power source voltage.17
6.3.2.1 Mains voltage.17
6.3.2.2 Nickel-cadmium cells.17
6.3.2.3 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.18
6.4.2.1 Mains voltage.18
6.4.2.2 Re-chargeable battery power sources.18
6.4.2.3 Power sources using other types of batteries.18
ETSI
---------------------- Page: 5 ----------------------
SIST EN 301 357-1 V1.3.1:2006
4 ETSI EN 301 357-1 V1.3.1 (2006-07)
6.4.2.4 Other power sources.18
7 General conditions.18
7.1 Normal test modulation.18
7.2 Test fixture.19
7.3 Test site and general arrangements for radiated measurements.20
7.4 Modes of operation of the transmitter .20
7.5 Arrangement for test signals at the input of the transmitter .20
8 Methods of measurement and limits for transmitter parameters .20
8.1 Basic requirements for Band II LPD .20
8.2 Methods of measurement and limits for transmitter parameters of Band II LPD.21
8.2.1 Effective radiated power, occupied bandwidth, channel spacing, frequency error, and transmitter
timeout .21
8.2.1.1 Definitions.21
8.2.1.2 Test equipment setup.21
8.2.1.3 Method of measurement.22
8.2.1.3.1 Test site and general arrangements for radiated measurements.22
8.2.1.3.2 Test modulation.22
8.2.1.3.3 Measurement procedure.22
8.2.1.4 Limits.22
8.2.1.5 Measurement uncertainty.23
8.2.1.6 Radiated spurious emissions .23
8.2.1.6.1 Definitions.23
8.2.1.6.2 Measurement procedure.23
8.2.1.6.3 Limits for Band II LPD .23
8.2.1.6.4 Limits for combined equipments.23
8.2.1.6.5 Measurement uncertainty.23
8.3 Frequency error.24
8.3.1 Definition.24
8.3.2 Method of measurement.24
8.3.3 Limit.24
8.4 Carrier power.24
8.4.1 Definition.24
8.4.2 Method of measurement for equipment with integral antenna.24
8.4.2.1 Method of measurement under normal test conditions .24
8.4.2.2 Method of measurement under extreme test conditions.25
8.4.3 Limit.25
8.5 Channel bandwidth.26
8.5.1 Definition.26
8.5.2 Measurement of Necessary Bandwidth (BN) .26
8.5.3 Limits.26
8.5.4 Edge of Band Limits.26
8.6 Spurious emissions and cabinet radiation.27
8.6.1 Definitions.28
8.6.2 Method of measuring the effective radiated power.28
8.6.3 Limits.28
8.6.4 Measuring receiver.28
8.7 Cordless audio transmitter shutoff.29
8.7.1 Definition.29
8.7.2 Method of measurement.29
8.7.3 Limits.29
9 Receiver.30
9.1 Spurious emissions and cabinet radiation.30
9.1.1 Definitions.30
9.1.2 Method of measuring the power level in a specified load.30
9.1.3 Method of measuring the effective radiated power of the enclosure .30
9.1.4 Method of measuring the effective radiated power.31
9.1.5 Limits.31
10 Measurement uncertainty.31
ETSI
---------------------- Page: 6 ----------------------
SIST EN 301 357-1 V1.3.1:2006
5 ETSI EN 301 357-1 V1.3.1 (2006-07)
10.1 Compliance assessment when measurement uncertainty is equal to or less than maximum acceptable
uncertainty.31
10.2 Compliance assessment when measurement uncertainty is greater than maximum acceptable uncertainty .32
10.3 Maximum allowable measurement uncertainties .32
Annex A (normative): Radiated measurement.33
A.1 Test sites and general arrangements for measurements involving the use of radiated fields.33
A.1.1 Anechoic chamber.33
A.1.2 Anechoic chamber with a conductive ground plane.34
A.1.3 Open Area Test Site (OATS) .35
A.1.4 Test antenna.36
A.1.5 Substitution antenna.37
A.1.6 Measuring antenna.37
A.1.7 Stripline arrangement.37
A.1.7.1 General.37
A.1.7.2 Description.37
A.1.7.3 Calibration.37
A.1.7.4 Mode of use .37
A.2 Guidance on the use of radiation test sites .38
A.2.1 Verification of the test site .38
A.2.2 Preparation of the EUT.38
A.2.3 Power supplies to the EUT.38
A.2.4 Volume control setting for analogue speech tests .38
A.2.5 Range length.39
A.2.6 Site preparation.39
A.3 Coupling of signals.40
A.3.1 General.40
A.3.2 Data Signals.40
A.3.3 Speech and analogue signals .40
A.3.3.1 Acoustic coupler description.40
A.3.3.2 Calibration.41
A.4 Standard test position.41
A.5 Test fixture.41
A.5.1 Description.41
A.5.2 Calibration.42
A.5.3 Mode of use.43
Annex B (normative): Measurement of Necessary Bandwidth (BN) .44
Annex C (informative): Receiver parameters.45
C.1 Blocking or desensitization .45
C.1.1 Definition.45
C.1.2 Method of measurement.45
C.1.2.1 Measurement procedure.45
C.1.2.2 Definitions.45
C.1.2.3 Limits for applications below 1 GHz.46
C.1.2.4 Limits for applications above 1 GHz .46
C.2 Frequency mask for the receiver part.46
C.2.1 Definition.46
C.2.2 Method of measurement.46
C.2.3 Typical values for receivers.47
C.2.3.1 Typical values for receivers with analogue modulation.47
C.2.3.2 Typical values for receivers with digital modulation.47
Annex D (informative): Derivation of radiated spurious emissions limit for Band II LPD .48
Annex E (informative): Justifications for field strength measurement.49
ETSI
---------------------- Page: 7 ----------------------
SIST EN 301 357-1 V1.3.1:2006
6 ETSI EN 301 357-1 V1.3.1 (2006-07)
Annex F (informative): Bibliography.50
History .51
ETSI
---------------------- Page: 8 ----------------------
SIST EN 301 357-1 V1.3.1:2006
7 ETSI EN 301 357-1 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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.