ETSI EN 300 454-1 V1.1.2 (2000-08)

ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wide band audio links; Part 1: Technical characteristics and test methods

REN/ERM-RP08-0311-1

Elektromagnetna združljivost in zadeve v zvezi z radijskim spektrom (ERM) – Širokopasovne zvokovne povezave – 1. del: Tehnične karakteristike in preskusne metode

General Information

• Status: Published
• Publication Date: 01-Aug-2000
• Technical Committee: ERM RP08 - Land Mobile Radio C
• Current Stage: 12 - Completion
• Due Date: 04-Aug-2000
• Completion Date: 02-Aug-2000
• Ref Project: SIST EN 300 454-1 V1.1.2:2003 - ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wide band audio links; Part 1: Technical characteristics and test methods

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 454-1 V1.1.2:2003
01-december-2003
(OHNWURPDJQHWQD]GUXåOMLYRVWLQ]DGHYHY]YH]L]UDGLMVNLPVSHNWURP(50±
âLURNRSDVRYQH]YRNRYQHSRYH]DYH±GHO7HKQLþQHNDUDNWHULVWLNHLQSUHVNXVQH
PHWRGH
ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wide band audio
links; Part 1: Technical characteristics and test methods
Ta slovenski standard je istoveten z: EN 300 454-1 Version 1.1.2
ICS:
33.060.99 Druga oprema za radijske Other equipment for
komunikacije radiocommunications
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
SIST EN 300 454-1 V1.1.2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 454-1 V1.1.2:2003

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SIST EN 300 454-1 V1.1.2:2003
ETSI EN 300 454-1 V1.1.2 (2000-08)
European Standard (Telecommunications series)
Electromagnetic compatibility
and Radio spectrum Matters (ERM);
Wide band audio links;
Part 1: Technical characteristics and test methods

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SIST EN 300 454-1 V1.1.2:2003
2 ETSI EN 300 454-1 V1.1.2 (2000-08)
Reference
REN/ERM-RP08-0311-1
Keywords
audio, data, radio mic, testing
ETSI
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Copyright Notification
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The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI

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SIST EN 300 454-1 V1.1.2:2003
3 ETSI EN 300 454-1 V1.1.2 (2000-08)
Contents
Intellectual Property Rights .6
Foreword .6
Introduction.6
1 Scope.8
2 References.8
3 Definitions, symbols and abbreviations.9
3.1 Definitions. 9
3.2 Symbols. 9
3.3 Abbreviations. 10
4 Functional characteristics .10
4.1 Wide band audio link descriptions. 10
5 General.11
5.1 Presentation of equipment for testing purposes. 11
5.1.1 Choice of model for type testing . 11
5.1.2 Definitions of alignment and switching ranges. 12
5.1.3 Definition of the categories of the alignment range (AR1 and AR2). 12
5.1.4 Choice of frequencies. 12
5.1.5 Testing of single channel equipment of category AR1.12
5.1.6 Testing of single channel equipment of category AR2.12
5.1.7 Testing of two channel equipment of category AR1 .12
5.1.8 Testing of two channel equipment of category AR2 .13
5.1.9 Testing of multichannel equipment (more than two channels) of category AR1. 13
5.1.10 Testing of multichannel equipment (more than two channels) of category AR2 where the switching
range is less than the alignment range . 13
5.1.11 Testing of multichannel equipment (more than two channels) of category AR2 where the switching
range is equal to the alignment range . 14
5.1.12 Testing of equipment without a permanent external RF port. 14
5.1.12.1 Equipment with a permanent internal RF port . 14
5.1.12.2 Equipment with a temporary RF port. 14
5.2 Mechanical and electrical design . 14
5.2.1 General . 14
5.2.2 Limiting threshold . 14
5.2.3 Controls. 15
5.2.4 Integral antenna . 15
5.2.5 Marking (equipment identification). 15
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. 16
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 . 17
6.4.2.1 Mains voltage. 17
6.4.2.2 Rechargeable battery power sources. 18
6.4.2.3 Power sources using other types of batteries . 18
ETSI

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SIST EN 300 454-1 V1.1.2:2003
4 ETSI EN 300 454-1 V1.1.2 (2000-08)
6.4.2.4 Other power sources . 18
7 General conditions.18
7.1 Normal test modulation. 18
7.2 Artificial antenna. 19
7.3 Test fixture. 20
7.4 Test site and general arrangements for radiated measurements.20
7.5 Modes of operation of the transmitter . 20
7.6 Arrangement for test signals at the input of the transmitter. 20
7.7 Arrangements for test signals applied to the receiver via a test fixture or a test antenna . 20
8 Methods of measurement and limits for transmitter parameters .21
8.1 Frequency error. 21
8.1.1 Definition . 21
8.1.2 Method of measurement . 21
8.1.3 Limit. 21
8.2 Carrier power . 21
8.2.1 Definition . 21
8.2.2 Method of measurement for equipment without integral antenna. 22
8.2.3 Method of measurement for equipment with integral antenna. 22
8.2.3.1 Method of measurement under normal test conditions . 22
8.2.3.2 Method of measurement under extreme test conditions. 22
8.2.4 Limit. 23
8.3 Channel bandwidth. 23
8.3.1 Definition . 23
8.3.2 Measurement of Necessary Bandwidth (BN) . 23
8.3.3 Limits . 24
8.4 Spurious emissions. 24
8.4.1 Definitions. 24
8.4.2 Method of measuring the effective radiated power . 24
8.4.3 Limits . 25
8.4.4 Measuring receiver . 25
8.5 Transient frequency behaviour of the transmitter. 25
8.5.1 Definitions. 25
8.5.2 Method of measurement . 26
8.5.3 Method of measurement for frequency changing . 27
8.5.4 Limits . 27
9 Receiver .28
9.1 Spurious emissions. 28
9.1.1 Definitions. 28
9.1.2 Method of measuring the power level in a specified load . 28
9.1.3 Method of measuring the effective radiated power of the enclosure . 28
9.1.4 Method of measuring the effective radiated power . 29
9.2 Limits. 29
10 Measurement uncertainty.30
Annex A (normative): Radiated measurement .31
A.1 Test sites and general arrangements for measurements involving the use of radiated fields.31
A.1.1 Outdoor test site . 31
A.1.1.1 Test support for body worn equipment. 31
A.1.1.2 Standard position. 32
A.1.2 Test antenna . 32
A.1.3 Substitution antenna. 32
A.1.4 Optional additional indoor site. 33
A.2 Guidance on the use of radiation test sites .34
A.2.1 Measuring distance . 34
A.2.2 Test antenna . 34
A.2.3 Substitution antenna. 34
A.2.4 Artificial antenna. 34
ETSI

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SIST EN 300 454-1 V1.1.2:2003
5 ETSI EN 300 454-1 V1.1.2 (2000-08)
A.2.5 Auxiliary cables . 34
A.3 Further optional alternative indoor test site using an anechoic chamber .35
A.3.1 Example of the construction of a shielded anechoic chamber. 35
A.3.2 Influence of parasitic reflections in anechoic chambers. 35
A.3.3 Calibration of the shielded anechoic chamber. 36
Annex B (normative): Measurement of Necessary Bandwidth (BN) .38
Annex C (informative): Graphic representation of the selection of equipment and
frequencies for testing of single and multi-frequency equipment .39
History.41
ETSI

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SIST EN 300 454-1 V1.1.2:2003
6 ETSI EN 300 454-1 V1.1.2 (2000-08)
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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee
Electromagnetic compatibility and Radio spectrum Matters (ERM).
The present document is part 1 of a multi-part EN covering the Electromagnetic compatibility and Radio spectrum
Matters (ERM); Wide band audio links, as identified below:
Part 1: "Technical characteristics and test methods";
Part 2: "Harmonised EN under article 3.2 of the R&TTE Directive".
Every EN prepared by ETSI is a voluntary standard. The present document contains text concerning conformance
testing of the equipment to which it relates. This text should be considered only as guidance and does not make the
present document mandatory.
Annex A provides normative specifications concerning radiated measurements.
Annex B provides the test method for measurement of Necessary Bandwidth (BN).
Annex C presents a graphical representation of the equipment and frequencies for the testing of single and multi-
frequency equipment.
National transposition dates
Date of latest announcement of this EN (doa): 31 October 2000
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 30 April 2001
Date of withdrawal of any conflicting National Standard (dow): 30 April 2001
Introduction
I-ETS 300 422 [1] has been a frame which led to many national prescriptions which differed, sometimes substantially,
between European countries and did not directly refer to wide band audio links. The rapidly increasing use of wireless
microphones with increased power for bridging longer distances (hereafter referred to as wide band audio links) in
several European countries with different specifications, and the way forward to a Europe without borders, makes it
necessary to set up common specifications.
The present document provides the necessary parameters for equipment to obtain common approval throughout Europe.
It should also make it easier for the frequency management authorities to find harmonized frequency allocations which,
together with common technical specifications, will greatly reduce the present problems of multi-national use.
ETSI

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SIST EN 300 454-1 V1.1.2:2003
7 ETSI EN 300 454-1 V1.1.2 (2000-08)
In preparing the present document, much attention has been given to assure a low interference probability, while at the
same time allowing a maximum flexibility and service to the end-user. The close relationship between radio
microphones and wide band audio links has led to many identical characteristics. Nevertheless it was found to be better
to create a separate EN due to the higher power and the many extra facilities which were developed during recent years
for this special use. The present document does not include performance characteristics that may be required by the user
or requirements for interfacing equipment.
Type test measurements should be performed in one of the accredited test laboratories, accepted by the various National
regulatory authorities in order to grant type approval, provided the National regulatory requirements are met. This is in
compliance with CEPT Recommendation T/R 71-03 [2].
In addition, national administrations may accept a "certificate of conformity" based on a type test report. If equipment
available on the market is required to be checked it should be tested in accordance with the methods of measurement
specified in the present document.
ETSI

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SIST EN 300 454-1 V1.1.2:2003
8 ETSI EN 300 454-1 V1.1.2 (2000-08)
1 Scope
The present document specifies the minimum performance and the methods of measurement of wide band audio links.
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 which may be required by a user, nor does it
necessarily represent the optimum performance achievable.
The present document applies to modulation systems operating on radio frequencies between 25 MHz and 3 GHz.
Although analogue FM is at present used for the majority of wide band audio links, the present document does not
preclude any other constant carrier modulation technique, e.g. Gaussian Filtered Minimum Shift Keying (GMSK) or
Generalized Tamed Frequency Modulation (GTFM), provided that the modulation spectrum lies within the specified
spectral mask.
The present document does not cover wide band audio links employing Time Division Multiple Access (TDMA),
frequency hopping and spread spectrum or similar forms of modulation.
The present document does not cover radiated emissions below 25 MHz. Specifications related to Electro-Magnetic
Compatibility (EMC) are contained within ETS 300 445 [3].
The present document has been developed from CEPT Recommendation T/R 20-06 [4].
Additional standards or specifications may be required for equipment intended to interface with the Public Switched
Telephone Network (PSTN). This facility may be submitted to regulatory conditions.
The present document may be used by accredited test laboratories for type testing of the equipment. The performance of
the equipment submitted for type testing should be representative for the performance of the corresponding production
models.
The present document also contains instructions for the presentation of equipment for type testing purposes.
The types of equipment covered by the present document are as follows (see clause 4):
- professional wide band audio links for one-way transmission;
- professional wide band audio links for two-way transmission;
- professional wide band audio links with extra facilities.
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, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] 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".
[2] CEPT Recommendation T/R 71-03: "Procedures for Type Testing and Approval for Radio
Equipment Intended for Non-Public Systems".
[3] ETSI ETS 300 445: "Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC)
standard for wireless microphones and similar Radio Frequency (RF) audio link equipment".
ETSI

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SIST EN 300 454-1 V1.1.2:2003
9 ETSI EN 300 454-1 V1.1.2 (2000-08)
[4] CEPT Recommendation T/R 20-06: "Transmitters and Receivers for Low Power Cordless
Microphone Systems".
[5] ITU-R Recommendation BS.559-2: "Objective measurement of radio-frequency protection ratios
in LF, MF and HF broadcasting".
[6] IEC 60244: "Methods of measurement for radio transmitters".
[7] ETSI ETR 028: "Radio Equipment and Systems (RES); 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:
carrier grid: evenly spaced raster in a given frequency band for the allocation of carrier frequencies. The minimum
distance of two carriers in use is a multiple of the raster dependent on type and usage of the equipment.
channel bandwidth: frequency band of defined width (as a multiple of the carrier grid) including safety margin for
operation on adjacent channels, located symmetrically around a carrier frequency in the carrier grid.
conducted measurements: those measurements which are made using a direct 50 Ω connection to the equipment under
test.
integral antenna: antenna, with or without a connector, designed as, and declared as by the manufacturer, an
indispensable part of the equipment.
integral microphone: microphone, designed as, and declared as by the manufacturer
...