SIST ETS 300 445:1998/A1:1998
(Amendment)Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for wireless microphones and similar Radio Frequency (RF) audio link equipment
- Abstract
Covers the EMC standard for Wireless Microphones. This togther with ETS 300 454 is intended to become a harmonised standard, the reference of which is intended to be published in the Official Journal of the European Communities referencing the EMC Directive. This amendment implements the changes necessary to convert ETS 300 445 into a harmonised standard.
- Status
- Published
- Publication Date
- 30-Sep-1998
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Oct-1998
- Due Date
- 01-Oct-1998
- Completion Date
- 01-Oct-1998
- Mandate
- T-353
SIST ETS 300 445:1998/A1:1998 is the Slovenian adoption of ETSI Amendment A1 to ETS 300 445, the EMC standard for wireless microphones and similar Radio Frequency (RF) audio link equipment. It covers the EMC test methods and emission limits used to assess this equipment, and it is written for manufacturers, test laboratories, and approval authorities working to the EMC Directive.
What does SIST ETS 300 445:1998/A1:1998 specify?
SIST ETS 300 445:1998/A1:1998 specifies the EMC-related parts of ETS 300 445 for wireless microphones and similar RF audio link equipment. It also shows how the document is being aligned for harmonized EMC use together with ETS 300 454 and for equipment within the scope of I-ETS 300 422.
The amendment is organized around a replaced foreword and three normative annexes.
| Annex | What it covers |
|---|---|
| B | EMC-relevant clauses of ETS 300 445, including emission and immunity test methods |
| C | EMC-relevant clauses of I-ETS 300 422, including spurious emission limits for transmitters and receivers |
| D | ERC Decision on approval regulations for wireless microphones in the 25 MHz to 3 GHz range |
What are the key requirements of SIST ETS 300 445:1998/A1:1998?
The amendment points users to the EMC test methods and limit values that matter for conformity assessment. In practice, this means checking both emissions and immunity in the relevant operating states and ports.
Emission tests for transmitters, receivers and ancillary equipment
Annex B links clause 8 of ETS 300 445 to emission testing of enclosure ports, DC power input/output ports, and AC mains power input/output ports. For users, this means the equipment has to be assessed not only as a radio device but also through the ports and enclosures that can leak unwanted emissions.
Immunity tests for realistic disturbances
Annex B also links clause 9 to immunity tests such as radio frequency electromagnetic field, electrostatic discharge, fast transients common mode, RF common mode current clamp injection, vehicular transients and surges, voltage dips and interruptions, and common and differential mode transients. In practice, the equipment has to remain acceptable when exposed to common electrical and radio disturbances found in real installations.
Spurious emissions from transmitters
Annex C covers transmitter spurious emissions and separates operation from standby conditions. It also distinguishes frequency regions below 1 000 MHz and above 1 000 MHz, so compliance work needs the right measurement setup for each band and state.
Spurious emissions from receivers
Annex C also covers receiver spurious emissions, with limits for 25 MHz to 1 000 MHz and for frequencies above 1 000 MHz. The annex states that the measurement methods are contained in I-ETS 300 422, so users need to pair the limit values here with the measurement procedures in that companion standard.
Approval regulations for wireless microphones
Annex D reproduces the ERC Decision for approval regulations for wireless microphones in the 25 MHz to 3 GHz range used in the mobile service. It shows the regulatory route for national type approval and identifies the parameters taken from I-ETS 300 422, including frequency error, carrier power, channel bandwidth, spurious emissions, transient frequency behaviour, and receiver spurious emissions.
Spectrum-management choices
Annex D also notes that some parameters are subject to national licensing requirements and can be left to national choice. In practice, this matters for manufacturers and regulators because not every spectrum-management parameter is handled the same way in every country.
What terms does SIST ETS 300 445:1998/A1:1998 define?
- EMC - ElectroMagnetic Compatibility, the ability of equipment to function without causing or suffering unacceptable electromagnetic disturbance.
- RES - Radio Equipment and Systems, the ETSI technical area named in the standard title.
- RF - Radio Frequency, used here for audio link equipment operating by radio.
- I-ETS - Interim European Telecommunications Standard, the companion standard framework referenced by the amendment.
- ERC - European Radiocommunications Committee, the body named in Annex D.
- CEPT - European Conference of Postal and Telecommunications Administrations, the organization named in the approval decision.
- e.i.r.p. - equivalent isotropically radiated power, a spectrum-management parameter named in Annex D.
- erp - equipment effective radiated power, used in the receiver and transmitter approval tables.
Who uses SIST ETS 300 445:1998/A1:1998?
SIST ETS 300 445:1998/A1:1998 is used by manufacturers of wireless microphones and similar RF audio link equipment, EMC test laboratories, and conformity assessment teams. It is also used by national approval authorities and regulators that need a common basis for type approval and harmonized EMC treatment. In practice, it supports product design, pre-compliance testing, formal testing, and regulatory approval work for audio and radio equipment.
What changed in SIST ETS 300 445:1998/A1:1998 from the previous edition?
This amendment modifies ETS 300 445 (1996). It replaces the foreword, adds the harmonized EMC standard language linked to ETS 300 454 and Council Directive 89/336/EEC, and inserts normative Annexes B, C, and D. Those additions identify the EMC-relevant clauses, the spurious-emission limits, and the ERC Decision for approval regulations.
Which standards are used with SIST ETS 300 445:1998/A1:1998?
- ETS 300 454 - named as the companion ETS in the planned harmonized EMC standard arrangement.
- I-ETS 300 422 - provides the technical characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz range, and Annex C points to it for measurement methods.
- Council Directive 89/336/EEC - the EMC Directive referenced in the harmonized-standard context.
- CEPET Recommendation T/R 20-06 - named as the basis used by I-ETS 300 422.
- CEPT Recommendation T/R 01-05 - named in Annex D for transitional arrangements.
What does the SIST ETS 300 445:1998/A1:1998 document contain?
The document contains a clause-to-directive mapping in Annex B, including the test methods used for emissions and immunity assessment. Annex C contains transmitter and receiver spurious-emission limit tables and points users to I-ETS 300 422 for measurement procedures. Annex D reproduces the ERC Decision and its annexes, including the approval parameters and the national variation information for power and channel bandwidth. Together, these parts support EMC testing, compliance documentation, and approval decisions for wireless microphone equipment.
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Frequently Asked Questions
SIST ETS 300 445:1998/A1:1998 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for wireless microphones and similar Radio Frequency (RF) audio link equipment". This standard covers: Covers the EMC standard for Wireless Microphones. This togther with ETS 300 454 is intended to become a harmonised standard, the reference of which is intended to be published in the Official Journal of the European Communities referencing the EMC Directive. This amendment implements the changes necessary to convert ETS 300 445 into a harmonised standard.
Covers the EMC standard for Wireless Microphones. This togther with ETS 300 454 is intended to become a harmonised standard, the reference of which is intended to be published in the Official Journal of the European Communities referencing the EMC Directive. This amendment implements the changes necessary to convert ETS 300 445 into a harmonised standard.
SIST ETS 300 445:1998/A1:1998 is classified under the following ICS (International Classification for Standards) categories: 33.100.01 - Electromagnetic compatibility in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST ETS 300 445:1998/A1:1998 is associated with the following European legislation: Standardization Mandates: T-353. 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 ETS 300 445:1998/A1:1998 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-oktober-1998
5DGLMVNDRSUHPDLQVLVWHPL 5(6 6WDQGDUGHOHNWURPDJQHWQH]GUXåOMLYRVWL (0&
EUH]åLþQLKPLNURIRQRYLQSRGREQHRSUHPH]D]YRNRYQHSRYH]DYHQDSRGURþMX
UDGLMVNLKIUHNYHQF 5)
Radio Equipment and Systems (RES); ElectroMagnetic Compatibility (EMC) standard for
wireless microphones and similar Radio Frequency (RF) audio link equipment
Ta slovenski standard je istoveten z: ETS 300 445/A1 Edition 1
ICS:
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.
ETS 300 445
AMENDMENT A1
March 1997
Source: ETSI TC-RES Reference: RE/RES-09034
ICS: 33.020
Key words: Audio, EMC, radio, radio mic, testing
This amendment A1 modifies
the European Telecommunication Standard ETS 300 445 (1996)
Radio Equipment and Systems (RES);
ElectroMagnetic Compatibility (EMC) standard
for wireless microphones and similar
Radio Frequency (RF) audio link equipment
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.fr
Tel.: +33 4 92 94 42 00 - Fax: +33 4 93 65 47 16
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 1997. All rights reserved.
Page 2
ETS 300 445: January 1996/A1: March 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.
Page 3
ETS 300 445: January 1996/A1: March 1997
Foreword
This amendment to ETS 300 445 (1996) has been produced by the Radio Equipment and Systems (RES)
Technical Committee of the European Telecommunications Standards Institute (ETSI).
ETS 300 445 as amended by this amendment, with ETS 300 454, is intended to become a Harmonized
EMC Standard, the reference of which is intended to be published in the Official Journal of the European
Communities referencing Council Directive 89/336/EEC (EMC Directive).
ETS 300 445 as amended by this amendment is intended to become a Harmonized EMC Standard for
equipment within the scope of I-ETS 300 422.
Annex D contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.
Transposition dates
Date of adoption 21 February 1997
Date of latest announcement of this ETS (doa): 30 June 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 December 1997
Date of withdrawal of any conflicting National Standard (dow): 31 December 1997
Page 4
ETS 300 445: January 1996/A1: March 1997
Amendments
Page 5, Foreword
Replace Foreword with the following:
This European Telecommunication Standard (ETS) was produced by the Radio Equipment and Systems
(RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS together with ETS 300 454 is intended to become a Harmonized EMC Standard, the reference
of which is intended to be published in the Official Journal of the European Communities referencing the
EMC Directive.
This ETS is intended to become a Harmonized EMC standard for equipment within the scope of
I-ETS 300 422.
The technical specifications which are relevant to the EMC Directive are listed in normative annex B for
ETS 300 454 and annex C for I-ETS 300 422.
Annex D contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.
Page 31
Insert the following before History:
Annex B (normative): ETS 300 445, Radio Equipment and Systems (RES):
ElectroMagnetic Compatibility (EMC) standard for
wireless microphones and similar Radio Frequency
(RF) audio link equipment
Table B.1: Subclauses of this ETS relevant for compliance with the essential requirements of the
EC Council Directives
Clause/subclause number and title Corresponding article of Qualifying
Council Directive remarks
89/336/EEC
8 Test methods for emission tests of
transmitters and/or receivers and/or
ancillary equipment
8.2 Enclosure - ancillary equipment 4(a)
8.3 DC power input/output port 4(a)
8.4 AC mains power input/output port 4(a)
9 Test methods for immunity tests of
transmitters and/or receivers and/or
ancillary equipment
9.2 Radio frequency electromagnetic field 4(b)
(80 to 1 000 MHz)
9.3 Electrostatic discharge 4(b)
9.4 4(b)
Fast transients common mode
9.5 RF common mode, 0,15 MHz to 80 MHz 4(b)
(current clamp injection)
9.6 Transients and surges, vehicular 4(b)
environment
9.7 Voltage dips and interruptions 4(b)
9.8 Transients common and differential mode 4(b)
Page 5
ETS 300 445: January 1996/A1: March 1997
Annex C (normative): Clauses and/or subclauses from 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,
which are relevant for compliance with essential
requirements of the EC Council Directives
Table C.1: Subclauses of this ETS relevant for compliance of equipment within the scope of
I-ETS 300 422 with the essential requirements of the EC Council Directives
Clause/subclause number and title Corresponding article of Qualifying
Council Directive remarks
89/336/EEC
C.1 Spurious emissions - transmitter 4(a)
C.2 Spurious emissions - receiver 4(a)
Limits are detailed below, methods of measurement are contained in I-ETS 300 422.
Page 6
ETS 300 445: January 1996/A1: March 1997
C.1 Spurious emissions - transmitter
The power of the spurious emissions shall not exceed the limits of table C.1.
Table C.1: Radiated measurements
State Frequency
47 MHz to 74 MHz Other frequencies Frequencies above
87,5 MHz to 118 MHz below 1 000 MHz 1 000 MHz
174 MHz to 230 MHz
470 MHz to 862 MHz
Operation 4 nW 250 nW 1 μW
Standby 2 nW 2 nW 20 nW
C.2 Spurious emissions - receiver
The power of the spurious emissions shall not exceed the limits of table C.2.
Table C.2
25 - 1 000 MHz Frequencies
above
1 000 MHz
erp or 2 nW 20 nW
conducted
Annex D (normative): ERC Decision on the adoption of approval regulations
for radio equipment to be used for wireless
microphones in the 25 MHz to 3 GHz frequency range to
be used in the mobile service based on the Interim
European Telecommunications Standard
(I-ETS 300 422)
This annex contains the ERC Decision which references the technical specifications in I-ETS 300 422 for
inclusion in national type approval regulations.
ERC/DEC/(96)15
EUROPEAN RADIOCOMMUNICATIONS COMMITTEE
ERC Decision
of 1 November 1996
on the adoption of approval regulations for radio equipment
to be used for wireless microphones
in the 25 MHz to 3 GHz frequency range
to be used in the mobile service
based on the Interim European Telecommunications
Standard (I-ETS) 300 422
(ERC/DEC/(96)15)
EUROPEAN CONFERENCE OF POSTAL AND TELECOMMUNICATIONS ADMINISTRATIONS
Copyright 1996 the European Conference of Postal and Telecommunications Administrations (CEPT)
ERC/DEC/(96)15
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EXPLANATORY MEMORANDUM
1. INTRODU
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