SIST EN 61260-1:2014
(Main)Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications
Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications
EN IEC 61260-1 specifies performance requirements for analogue, sampled-data, and digital implementations of band-pass filters. The extent of the pass-band region of a filter's relative attenuation characteristic is a constant percentage of the exact midband frequency for all filters of a given bandwidth. An instrument conforming to the requirements of this standard may contain any number of contiguous band-pass filters covering any desired frequency range. Performance requirements are provided for two filter classes: class 1 and class 2. In general, specifications for class 1 and class 2 filters have the same design goals and differ mainly in the acceptance limits and the range of operational temperature. Acceptance limits for class 2 are greater than, or equal to, those for class 1. Maximum-permitted expanded uncertainties of measurement are also specified. Performance requirements are given for designs where the octave frequency ratio and the mid-band frequencies are powers of ten. Band-pass filters conforming to the performance requirements of this standard may be part of various measurement systems or may be an integral component of a specific instrument such as a spectrum analyser. This standard specifies the ranges of environmental conditions for operation of the filters. The required range depends on whether the instrument containing the filters is designed to be operated in a controlled environment or more generally in the field. Band-pass filters conforming to the requirements of this standard are capable of providing frequency-band-filtered spectral information for a wide variety of signals, for example, time-varying, intermittent or steady; broadband or discrete frequency; and long or short durations.
/
Electroacoustique - Filtres de bande d'octave et de bande d'une fraction d'octave - Partie 1: Spécifications
L'IEC 61260-1:2014 spécifie les exigences de performances des filtres passe-bande analogiques, à données échantillonnées et numériques. L'étendue de la bande passante de la caractéristique d'affaiblissement relatif d'un filtre est un pourcentage constant de la fréquence médiane exacte pour tous les filtres d'une bande passante donnée. Un instrument conforme aux exigences de la présente norme peut contenir n'importe quel nombre de filtres passe-bande adjacents couvrant n'importe quelle gamme de fréquences désirée. Les exigences de performances sont fournies pour deux classes de filtres: classe 1 et classe 2. En général, les spécifications pour les filtres de classe 1 et de classe 2 disposent des mêmes objectifs de conception et diffèrent principalement dans les limites d'acceptation et dans la plage de températures d'exploitation. Les limites d'acceptation de la classe 2 sont supérieures ou égales à celles de la classe 1. Les incertitudes de mesure élargies maximales autorisées sont également spécifiées. Les filtres passe-bande conformes aux exigences de la présente norme peuvent faire partie de différents systèmes de mesure ou peuvent être un composant intégré dans un instrument spécifique tel qu'un analyseur de spectre. La présente norme spécifie les gammes de conditions d'environnement pour le fonctionnement des filtres. La gamme exigée dépend du fait que l'instrument contenant les filtres est conçu pour fonctionner dans un environnement contrôlé ou plus généralement sur le terrain. Les filtres passe-bande conformes aux exigences de la présente norme sont capables de fournir une information spectrale filtrée en bandes de fréquences pour une large variété de signaux, comme des signaux variables dans le temps, intermittents ou permanents, à large bande ou composés de fréquences discrètes, de courtes ou de longues durées. Cette première édition de l'IEC 61260-1 (2014), la future IEC 61260-2 et la future IEC 61260-3, annulent et remplacent la première édition de l'IEC 61260 (1995) et son amendement 1 (2001). Cette édition constitue une révision technique qui inclut les modifications techniques majeures suivantes par rapport à l'IEC 61260 (1995) et son amendement 1 (2001): - le document unique dans la première édition de l'IEC 61260 (1995) et son amendement 1 (2001) est, dans la série IEC 61260 divisé selon les trois parties suivantes: spécifications, essais d'évaluation d'un modèle et essais périodiques; - l'IEC 61260-1 (2014) ne contient plus de catégorie de performances de classe 0; - dans l'IEC 61260-1 (2014), les objectifs de conception de la spécification sont basés sur une conception en base 10 uniquement; - les conditions d'environnement de référence sont passées de 20 °C / 65 % d'humidité relative à 23 °C / 50 % d'humidité relative; - l'IEC 61260 (1995) et son amendement 1 (2001) spécifiait des limites de tolérance sans considérer l'incertitude de la mesure pour la vérification des spécifications. La nouvelle série IEC 61260 spécifie des limites d'acceptation pour les valeurs observées et l'incertitude maximale autorisée des mesures pour la conformité des essais de laboratoire aux spécifications de la norme.
Elektroakustika - Oktavni in frakcijski oktavni filtri - 1. del: Specifikacije (IEC 61260-1:2014)
Standard EN IEC 61260-1 določa zahteve glede zmogljivosti za analogne in digitalne izvedbe ter izvedbe z vzorčenimi podatki pasovnoprepustnih filtrov. Obseg območja pasovne širine značilnosti relativnega slabljenja filtra je stalen odstotek točne medpasovne frekvence za vse filtre določene pasovne širine. Instrument, ki je v skladu z zahtevami iz tega standarda, lahko vključuje poljubno število sosednjih pasovnoprepustnih filtrov, ki zajemajo katero koli želeno frekvenčno območje. Zahteve glede zmogljivosti so navedene za dva razreda filtrov: razred 1 in razred 2. Na splošno imajo specifikacije za filtre razreda 1 in razreda 2 enake cilje glede zasnove ter se razlikujejo predvsem v mejah sprejemljivosti in razponu delovne temperature. Meje sprejemljivosti za razred 2 so večje ali enake mejam sprejemljivosti za razred 1. Opredeljene so tudi največje dovoljene razširjene negotovosti pri merjenju. Zahteve glede zmogljivosti so navedene za zasnove z oktavnim frekvenčnim razmerjem in medpasovnimi frekvencami na deseto potenco. Pasovnoprepustni filtri, ki so v skladu z zahtevami glede zmogljivosti iz tega standarda, so lahko del različnih merilnih sistemov ali pa so ključna komponenta posebnega instrumenta, kot je spektralni analizator. Ta standard določa razpone okoljskih pogojev za delovanje filtrov. Zahtevani razpon je odvisen od tega, ali je instrument, ki vsebuje filtre, oblikovan za delovanje v nadzorovanem okolju ali splošneje v polju. Pasovnoprepustni filtri, ki so v skladu z zahtevami tega standarda, so sposobni zagotavljati spektralne informacije, filtrirane po frekvenčnem pasu, za raznolike signale, na primer časovno spremenljive, občasne ali neprekinjene; širokopasovne ali diskretne frekvence; in z dolgim ali kratkim trajanjem.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 61260-1:2014
01-oktober-2014
1DGRPHãþD
SIST EN 61260:1998
SIST EN 61260:1998/A1:2006
Elektroakustika - Oktavni in frakcijski oktavni filtri - 1. del: Specifikacije (IEC 61260
-1:2014)
Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications
/
Electroacoustique - Filtres de bande d'octave et de bande d'une fraction d'octave - Partie
1: Spécifications
Ta slovenski standard je istoveten z: EN 61260-1:2014
ICS:
17.140.50 Elektroakustika Electroacoustics
SIST EN 61260-1:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 61260-1:2014
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SIST EN 61260-1:2014
EUROPEAN STANDARD EN 61260-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 17.140.50 Supersedes EN 61260:1995
English Version
Electroacoustics - Octave-band and fractional-octave-band filters
- Part 1: Specifications
(IEC 61260-1:2014)
Electroacoustique - Filtres de bande d'octave et de bande Elektroakustik - Bandfilter für Oktaven und Bruchteile von
d'une fraction d'octave - Partie 1: Spécifications Oktaven - Teil 1: Anforderungen
(CEI 61260-1:2014) (IEC 61260-1:2014)
This European Standard was approved by CENELEC on 2014-03-21. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61260-1:2014 E
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SIST EN 61260-1:2014
EN 61260-1:2014 - 2 -
Foreword
The text of document 29/835/FDIS, future edition 1 of IEC 61260-1, prepared by IEC/TC 29
"Electroacoustics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 61260-1:2014.
The following dates are fixed:
(dop) 2014-12-21
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-03-21
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This document supersedes EN 61260:1995.
EN 61260-1:2014 includes the following significant technical changes with respect to EN 61260:1995:
a) the single document in the first edition of EN 61260:1995 is in EN 61260 series
separated into the three parts covering: specifications, pattern evaluation tests and
periodic tests;
b) the EN 61260:1995 specified three performance categories: classes 0, 1 and 2. The
EN 61260 series specifies requirements for class 1 and 2;
c) in the EN 61260:1995, the design goals for the specification can be based on base-2 or
base 10 design. In EN 61260 series only base-10 is specified;
d) the reference environmental conditions have been changed from 20 °C / 65 % RH to
23 °C / 50 % RH;
e) EN 61260:1995 specified tolerance limits without considering the uncertainty of
measurement for verification of the specifications. EN 61260 series specifies acceptance
limits for the observed values and maximum-permitted uncertainty of measurements for
laboratories testing conformance to specifications in the standard.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61260-1:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
CISPR 16-1-1:2010 NOTE Harmonised as EN 55016-1-1:2010.
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SIST EN 61260-1:2014
- 3 - EN 61260-1:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year
IEC 61000-4-2 - Electromagnetic compatibility (EMC) -- Part EN 61000-4-2 -
4-2: Testing and measurement techniques
- Electrostatic discharge immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) -- Part EN 61000-4-3 2006
4-3: Testing and measurement techniques
- Radiated, radio-frequency,
electromagnetic field immunity test
IEC 61000-6-1 2005 Electromagnetic compatibility (EMC) -- Part EN 61000-6-1 2007
6-1: Generic standards - Immunity for
residential, commercial and light-industrial
environments
IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) -- Part EN 61000-6-2 2005
6-2: Generic standards - Immunity for
industrial environments
+ 2005
IEC 61000-6-3 2006 Electromagnetic compatibility (EMC) -- Part EN 61000-6-3 2007
6-3: Generic standards - Emission
standard for residential, commercial and
light-industrial environments
IEC 61672-1 - Electroacoustics - Sound level meters -- EN 61672-1 -
Part 1: Specifications
ISO/IEC Guide 98-3 - Uncertainty of measurement -- Part 3: - -
Guide to the expression of uncertainty in
measurement (GUM:1995)
ISO/IEC Guide 98-4 2012 Uncertainty of measurement -- Part 4: Role - -
of measurement uncertainty in conformity
assessment
CISPR 22 (mod) 2008 Information technology equipment - Radio EN 55022 2010
disturbance characteristics - Limits and
methods of measurement
+AC 2011
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SIST EN 61260-1:2014
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SIST EN 61260-1:2014
IEC 61260-1
®
Edition 1.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electroacoustics – Octave-band and fractional-octave-band filters –
Part 1: Specifications
Électroacoustique – Filtres de bande d'octave et de bande d'une fraction
d'octave –
Partie 1: Spécifications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 17.140.50 ISBN 978-2-8322-1417-6
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 61260-1:2014
– 2 – 61260-1 © IEC:2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 8
4 Reference environmental conditions . 12
5 Performance requirements . 12
5.1 General . 12
5.2 Octave frequency ratio . 13
5.3 Reference frequency . 13
5.4 Exact mid-band frequencies . 13
5.5 Nominal mid-band frequencies . 13
5.6 Band-edge frequencies . 14
5.7 Time-averaged signal levels . 14
5.8 Filter attenuation . 14
5.9 Reference attenuation . 15
5.10 Relative attenuation . 15
5.11 Normalized effective bandwidth . 18
5.12 Effective bandwidth deviation . 19
5.13 Linear operating range . 19
5.14 Time-invariant operation . 20
5.15 Anti-alias filters . 20
5.16 Summation of output signals . 21
5.17 Overload indicator . 21
5.18 Filter decay time. 21
5.19 Maximum input signal . 21
5.20 Output terminals and terminating impedances . 22
5.21 Power supply check . 22
5.22 Sensitivity to various environments . 22
5.22.1 General . 22
5.22.2 Ambient air temperature and relative humidity . 22
5.23 Electrostatic-discharge and electromagnetic-compatibility requirements . 22
5.23.1 General . 22
5.23.2 Electrostatic discharges . 23
5.23.3 Immunity to power-frequency and radio-frequency fields . 23
5.23.4 Emission limits . 25
6 Instrument marking . 25
7 Instruction manual . 26
7.1 General . 26
7.2 Operation . 26
7.3 Testing . 27
Annex A (informative) Relationship between tolerance interval, corresponding
acceptance interval and the maximum-permitted uncertainty of measurement . 28
Annex B (normative) Maximum-permitted expanded uncertainties of measurement . 29
Annex C (informative) Examples of conformance assessment to specifications of this
standard . 30
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SIST EN 61260-1:2014
61260-1 © IEC:2014 – 3 –
C.1 General . 30
C.2 Conformance criteria . 30
C.3 Example test results . 31
Annex D (informative) Base 2 filters . 33
Annex E (normative) Nominal mid-band frequencies . 34
E.1 Mid-band frequencies for octave-band and one-third-octave-band filters . 34
E.2 Mid-band frequencies for one-half-octave-band filters . 34
E.3 Mid-band frequencies for other bandwidths . 34
Annex F (informative) Normalized frequencies at breakpoints of acceptance limits on
minimum and maximum relative attenuation for one-third-octave-band filters . 36
Annex G (informative) Filter response to exponentially swept sinusoidal signals . 38
G.1 Exponential frequency sweep . 38
G.2 Response of set of band-pass filters to a sweep . 38
Annex H (informative) Measurement of filter decay time . 41
H.1 General . 41
H.2 Measurement of filter decay time . 41
H.2.1 Instruments with the capability to measure reverberation time . 41
H.2.2 Instruments without the capability to measure reverberation
time . 41
Bibliography . 43
Figure 1 – Minimum and maximum limits on relative attenuation as a function of f/f
m
for class 1 and class 2 octave-band filters . 17
Figure A.1 – Relationship between tolerance interval, corresponding acceptance
interval and the maximum-permitted uncertainty of measurement . 28
Figure C.1 – Examples of conformance assessment . 32
Figure G.1 – Relation between the logarithmic frequency scale and the linear time
scale due to the exponential sweep . 40
Table 1 – Acceptance limits on relative attenuation for octave-band filters . 15
Table 2 – Limits for radiated disturbance of class B Information Technology Equipment
(ITE) at a distance of 10 m . 25
Table 3 – Limits for conducted disturbance to the voltage of a public supply of electric
power . 25
Table B.1 – Maximum-permitted expanded uncertainties of measurement . 29
Table C.1 – Examples of conformance assessment . 31
Table E.1 – Mid-band frequencies for octave-band and one-third-octave-band filters in
the audio range . 35
Table F.1 – Acceptance limits on relative attenuation for one-third-octave-band filters . 37
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SIST EN 61260-1:2014
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROACOUSTICS –
OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS –
Part 1: Specifications
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61260-1 has been prepared by IEC technical committee 29:
Electroacoustics.
This first edition of IEC 61260-1, future IEC 61260-2 and future IEC 61260-3, cancel and
replace the first edition of IEC 61260 published in 1995, and Amendment 1:2001. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the
IEC 61260:
a) the single document in the first edition of IEC 61260:1995 is in IEC 61260 series
separated into the three parts covering: specifications, pattern evaluation tests and
periodic tests;
b) the IEC 61260:1995 specified three performance categories: classes 0, 1 and 2. The
IEC 61260 series specifies requirements for class 1 and 2;
c) in the IEC 61260:1995, the design goals for the specification can be based on base-2 or
base 10 design. In IEC 61260 series only base-10 is specified;
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SIST EN 61260-1:2014
61260-1 © IEC:2014 – 5 –
d) the reference environmental conditions have been changed from 20 °C / 65 % RH to
23 °C / 50 % RH;
e) IEC 61260:1995 specified tolerance limits without considering the uncertainty of
measurement for verification of the specifications. IEC 61260 series specifies acceptance
limits for the observed values and maximum-permitted uncertainty of measurements for
laboratories testing conformance to specifications in the standard.
The text of this standard is based on the following documents:
FDIS Report on voting
29/835/FDIS 29/839/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 61260 series, published under the general title
Electroacoustics – Octave-band and fractional-octave-band filters can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN 61260-1:2014
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INTRODUCTION
IEC 61260:1995 and its Amendment 1:2001 are now separated into the following three parts
of IEC 61260 series:
• Part 1: Specifications
• Part 2: Pattern evaluation tests (under consideration)
• Part 3: Periodic tests (under consideration)
For assessments of conformance to performance specifications, IEC 61260-1 uses different
criteria than were used for the IEC 61260:1995 edition.
IEC 61260:1995 did not provide any requirements or recommendations to account for the
uncertainty of measurement in assessments of conformance to specifications. This absence
of requirements or recommendations to account for uncertainty of measurement created
ambiguity in determinations of conformance to specifications for situations where a measured
deviation from a design goal was close to a limit of the allowed deviation. If conformance was
determined based on whether a measured deviation did or did not exceed the limits, the end-
user of the octave-band and fractional-octave-band filters incurred the risk that the true
deviation from a design goal exceeded the limits.
To remove this ambiguity, IEC Technical Committee 29, at its meeting in 1996, adopted a
policy to account for measurement uncertainty in assessments of conformance in International
Standards that it prepares.
This first edition of IEC 61260-1 uses an amended criterion for assessing conformance to a
specification. Conformance is demonstrated when (a) measured deviations from design goals
do not exceed the applicable acceptance limits and (b) the uncertainty of measurement does
not exceed the corresponding maximum-permitted uncertainty. Acceptance limits are
analogous to the tolerance limits allowances for design and manufacturing implied in the
IEC 61260:1995.
Actual and maximum-permitted uncertainties of measurement are determined for a coverage
probability of 95 %. Unless more-specific information is available, the evaluation of the
contribution of a specific filter or filter set to a total measurement uncertainty can be based on
the acceptance limits and maximum-permitted uncertainties specified in this standard.
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SIST EN 61260-1:2014
61260-1 © IEC:2014 – 7 –
ELECTROACOUSTICS –
OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND FILTERS –
Part 1: Specifications
1 Scope
1.1 This part of the IEC 61260 series specifies performance requirements for analogue,
sampled-data, and digital implementations of band-pass filters. The extent of the pass-band
region of a filter's relative attenuation characteristic is a constant percentage of the exact mid-
band frequency for all filters of a given bandwidth. An instrument conforming to the
requirements of this standard may contain any number of contiguous band-pass filters
covering any desired frequency range.
1.2 Performance requirements are provided for two filter classes: class 1 and class 2. In
general, specifications for class 1 and class 2 filters have the same design goals and differ
mainly in the acceptance limits and the range of operational temperature. Acceptance limits
for class 2 are greater than, or equal to, those for class 1. Maximum-permitted expanded
uncertainties of measurement are also specified.
1.3 Performance requirements are given for designs where the octave frequency ratio and
the mid-band frequencies are powers of ten.
1.4 Band-pass filters conforming to the performance requirements of this standard may be
part of various measurement systems or may be an integral component of a specific
instrument such as a spectrum analyser.
1.5 This standard specifies the ranges of environmental conditions for operation of the
filters. The required range depends on whether the instrument containing the filters is
designed to be operated in a controlled environment or more generally in the field.
1.6 Band-pass filters conforming to the requirements of this standard are capable of
providing frequency-band-filtered spectral information for a wide variety of signals, for
example, time-varying, intermittent or steady; broadband or discrete frequency; and long or
short durations.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61000-4-2, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement
techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-6-1:2005, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards –
Immunity for residential, commercial and light-industrial environments
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SIST EN 61260-1:2014
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IEC 61000-6-2:2005, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –
Immunity for industrial environments
IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –
Emission standard for residential, commercial and light-industrial environments
Amendment 1:2010
IEC 61672-1, Electroacoustics – Sound level meters – Part 1: Specifications
CISPR 22:2008, Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement
ISO/IEC Guide 98-3, Uncertainty of measurement – Part 3: Guide to the expression of
uncertainty in measurement (GUM: 1995)
ISO/IEC Guide 98-4:2012, Uncertainty of measurement – Part 4: Role of measurement
uncertainty in conformity assessment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61000-4-2,
IEC 61000-4-3, IEC 61000-6-1, IEC 61000-6-2, and IEC 61000-6-3, as well as the following
apply.
3.1
band-pass filter
filter with a single transmission band (or pass-band with small relative attenuation) extending
from a lower band-edge frequency greater than zero to a finite upper band-
...
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