prEN IEC 55035:2025

Electromagnetic compatibility of multimedia equipment - Immunity requirements

Elektromagnetische Verträglichkeit von Multimediageräten und -einrichtungen - Anforderungen zur Störfestigkeit

Compatibilité électromagnétique des équipements multimédias - Exigences d'immunité

Elektromagnetna združljivost večpredstavnostne opreme - Zahteve za odpornost

General Information

• Status: Not Published
• Publication Date: 16-May-2027
• ICS: 33.100.20 - Immunity
• Technical Committee: CLC/TC 210 - Electromagnetic Compatibility (EMC)
• Current Stage: 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
• Start Date: 09-Jan-2026
• Completion Date: 09-Jan-2026
• Directive: Not Harmonized2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive:

  ---

  Not Harmonized2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Mandate: M/536 - [C(2015)536] Standardisation request as regards radio equipment in support of Directive 2014/53/EU
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Mandate: M/585 - standardisation request to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council in conjunction with Commission Delegated Regulation
• Mandate: M/585 AMD 1 - COMMISSION IMPLEMENTING DECISION of 23.8.2023 amending Implementing Decision C(2022) 5637 on a standardisation request to the European Committee for Standardisation and the European Committee for Electrotechnical Standardisation as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council and Commission Delegated Regulation (EU) 2022/30
• Ref Project: oSIST prEN IEC 55035:2025 - Electromagnetic compatibility of multimedia equipment - Immunity requirements

Overview

prEN IEC 55035:2025 - "Electromagnetic compatibility of multimedia equipment - Immunity requirements" (CLC/CISPR project) specifies immunity requirements and test methods for multimedia and information technology equipment. The document is currently a Committee Draft for Vote (CDV) and is submitted for parallel IEC–CENELEC voting; it is marked as under study and subject to change. It aligns with CISPR/IEC work on EMC and builds a practical test framework for verifying that multimedia products continue to operate correctly in the presence of electromagnetic disturbances.

Key topics and technical requirements

This standard organizes immunity testing and criteria by function and port type and includes:

• Immunity test types: electrostatic discharge (ESD), continuous RF radiated and conducted disturbance, power-frequency magnetic field, electrical fast transients/bursts (EFT/B), surge, and voltage dips/interruptions.
• Test structure and conditions: representation of test levels, test configuration, power and environmental parameters, and specific requirements for continuous RF tests.
• Performance criteria: general performance criteria A, B, and C that define acceptable levels of degradation or recovery during/after disturbances.
• Test reporting and uncertainty: requirements for test reports and consideration of measurement uncertainty.
• Function-specific annexes: normative annexes detail immunity approaches for common multimedia functions such as broadcast reception, print/scan, display/display output, musical tone generation, networking (including xDSL), audio output, telephony and radio functions.
• Informative guidance: annexes provide examples of applying tests, digital broadcast signals, image test material and receiver input level setting guidance.

The document includes tables and figures for port classifications, test arrangements, and example test setups, plus annexes that modify levels or criteria for particular functions.

Applications and users

prEN IEC 55035:2025 is intended for:

• Manufacturers and design engineers of multimedia equipment (TVs, set‑top boxes, printers, networked audio/video devices) to design robust products against electromagnetic disturbances.
• Compliance and EMC test laboratories implementing immunity test programs and preparing certification evidence.
• Regulatory bodies and standards committees harmonizing EMC requirements across markets.
• Product managers and procurement teams assessing product readiness for electromagnetic environments.

Applying this standard helps reduce field failures, improve product interoperability, and meet regulatory EMC expectations.

Related standards

• CISPR/IEC EMC family documents and committee outputs (CISPR 35 ED2 referenced in the draft).
• Normative references listed in the standard (for specific test methods and instrumentation).

Note: prEN IEC 55035:2025 is a draft and should not be used as a final reference until publication.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2025
Elektromagnetna združljivost večpredstavnostne opreme - Zahteve za odpornost
Electromagnetic compatibility of multimedia equipment - Immunity requirements
Compatibilité électromagnétique des équipements multimédias - Exigences d'immunité
Ta slovenski standard je istoveten z: prEN IEC 55035:2025
ICS:
33.100.20 Imunost Immunity
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CIS/I/697/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
CISPR 35 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-10-17 2026-01-09
SUPERSEDES DOCUMENTS:
CIS/I/677/RR
IEC CIS/I : ELECTROMAGNETIC COMPATIBILITY OF INFORMATION TECHNOLOGY EQUIPMENT, MULTIMEDIA EQUIPMENT AND
RECEIVERS
SECRETARIAT: SECRETARY:
Japan Mr Kazuyuki Hori
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 77, SC 77B, CIS/A
ASPECTS CONCERNED:
Digital content,Electricity transmission and distribution,Energy Efficiency,Environment,Information security and
data privacy,Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR
CENELEC PARALLEL
VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of CENELEC, is drawn to the
fact that this Committee Draft for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the CENELEC online voting
system.
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

-
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electromagnetic compatibility of multimedia equipment - Immunity requirements

PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
-
CISPR CDV ED2 © IEC 2025
0 CONTENTS
2 FOREWORD . 6
3 INTRODUCTION . 8
4 1 Scope . 9
5 2 Normative references . 9
6 3 Terms, definitions and abbreviated terms . 10
7 3.1 Terms and definitions . 10
8 3.2 Abbreviated terms . 18
9 4 Overview . 22
10 4.1 General . 22
11 4.2 Test details . 23
12 4.2.1 Electrostatic discharges (ESD) . 23
13 4.2.2 Continuous RF disturbance tests . 24
14 4.2.3 Power frequency magnetic field . 25
15 4.2.4 Electrical fast transients/burst (EFT/B) . 25
16 4.2.5 Surges . 25
17 4.2.6 Voltage dips and interruptions . 26
18 5 Requirements . 26
19 5.1 Application of tests . 26
20 5.1.1 General . 26
21 5.1.2 Examples of justifications . 27
22 5.2 Representation of test levels . 27
23 5.3 Test conditions . 28
24 5.3.1 Power . 28
25 5.3.2 Environmental parameters . 28
26 5.3.3 Specific requirements for continuous RF disturbance tests . 28
27 6 Test report . 33
28 7 Test configuration . 33
29 8 General performance criteria . 34
30 8.1 General . 34
31 8.2 Performance criterion A . 35
32 8.3 Performance criterion B . 35
33 8.4 Performance criterion C . 35
34 9 Compliance with this document . 35
35 10 Test uncertainty . 36
36 Annex A (normative) Broadcast reception function . 37
37 A.1 General . 37
38 A.2 Applicability . 37
39 A.3 Mode of operation . 38
40 A.4 Modified test levels and performance criteria . 38
41 Annex B (normative) Print function . 39
42 B.1 Applicability . 39
43 B.2 Mode of operation . 39
44 B.3 Performance criteria . 39
45 Annex C (normative) Scan function . 41
CISPR CDV ED2 © IEC 2025
46 C.1 Applicability . 41
47 C.2 Mode of operation . 41
48 C.3 Performance criteria . 41
49 Annex D (normative) Display and display output functions . 43
50 D.1 Applicability . 43
51 D.2 Mode of operation . 43
52 D.3 Performance criteria . 46
53 Annex E (normative) Musical tone generating function . 48
54 E.1 Applicability . 48
55 E.2 Mode of operation . 48
56 E.3 Performance criteria . 48
57 Annex F (normative) Networking functions . 51
58 F.1 Applicability . 51
59 F.2 Basic Network Terminal (BNT) function . 51
60 F.3 General requirements for network functions . 52
61 F.4 Requirements for CPE containing xDSL ports . 55
62 Annex G (normative) Audio output function . 61
63 G.1 Applicability . 61
64 G.2 Overview. 61
65 G.3 Reference level . 62
66 G.4 Mode of operation . 63
67 G.5 Method of measurement . 63
68 G.6 Performance criteria . 66
69 G.7 Test setup examples . 67
70 Annex H (normative) Telephony function . 71
71 H.1 Applicability . 71
72 H.2 General . 71
73 H.3 Mode of operation . 72
74 H.4 Performance criteria . 72
75 Annex I (normative) Radio function . 73
76 I.1 Applicability . 73
77 I.2 Application of the requirements of Annex I . 73
78 I.3 Exclusion bands . 74
79 I.4 Other exclusion bands . 78
80 I.5 Specific radio function test configurations . 78
81 I.6 Mode of operation . 79
82 I.7 Performance criteria . 81
83 Annex J (informative) Immunity to specific radio technologies operating at frequencies
84 of 700 MHz and above . 83
85 Annex K (informative) Examples of how to apply this document . 85
86 K.1 Purpose . 85
87 K.2 Developing the test plan . 85
88 K.3 Specific examples . 86
89 Annex L (informative) Colour bar image . 95
90 L.1 Overview. 95
91 L.2 Image description . 95
92 L.3 Primary colour contributions and saturation . 95
93 L.4 Moving element . 96
CISPR CDV ED2 © IEC 2025
94 Annex M (informative) Digital broadcast signals . 97
95 Annex N (informative) Receiver input signal level setting . 100
96 N.1 Introduction . 100
97 N.2 Solutions . 100
98 Bibliography . 103
100 Figure 1 – Channel width . 12
101 Figure 2 – Exclusion band for a channelized system . 13
102 Figure 3 – Exclusion band for a non-channelized system . 14
103 Figure 4 – Occupied bandwidth . 15
104 Figure 5 – Operating channel . 15
105 Figure 6 – Examples of ports . 16
106 Figure 7 – Example of a public wired network . 17
107 Figure 8 – Example setup for surge tests applied to shielded cables, grounded only at
108 the EUT . 26
109 Figure 9 – Graphical representation of the continuous RF conducted disturbances
110 levels defined in table clause 2.1 . 27
111 Figure D.1 – Example test setup with automated detection of display degradation . 45
112 Figure D.2 – Example test setup with automated detection of display output
113 degradation . 45
114 Figure F.1 – xDSL access system configuration . 56
115 Figure F.2 – Example schematic of the broadband impulse noise disturbances test
116 setup . 58
117 Figure G.1 – Example basic test setup for electrical measurements (direct connection
118 to EUT) . 67
119 Figure G.2 – Example basic test setup for acoustic measurements . 67
120 Figure G.3 – Example test setup for acoustic measurements on loudspeakers . 67
121 Figure G.4 – Example test setup for on-ear acoustic measurements . 68
122 Figure G.5 – Example test setup for on-ear acoustic measurements, microphone
123 located away from earpiece transducer . 68
124 Figure G.6 – Example test setup for measuring the sound pressure level from the
125 acoustic output device of a telephone handset . 69
126 Figure G.7 – Example test setups for measuring the demodulation on analogue wired
127 network lines . 70
128 Figure I.1 – Example of a continuous RF radiated disturbance test set up with a
129 transceiver (EUT) within a test chamber. 79
130 Figure K.1 – Examples of different functions . 86
131 Figure K.2 – Example of a typical small key telephone system or PABX . 93
132 Figure L.1 – Colour bar image. 96
134 Table 1 – Immunity requirements for enclosure ports . 29
135 Table 2 – Immunity requirements for analogue/digital data ports . 30
136 Table 3 – Immunity requirements for DC network power ports . 31
137 Table 4 – Immunity requirements for AC mains power ports . 32
138 Table 5 – Test arrangements of EUT . 33
CISPR CDV ED2 © IEC 2025
139 Table A.1 – Modified test levels for performance criterion A for the broadcast reception
140 function . 38
141 Table D.1 – Prioritised list of display images . 44
142 Table D.2 – Characteristics of a measurement video camera monitor system . 46
143 Table E.1 – Subgroups and performance criteria A for the musical tone generating
144 function . 49
145 Table E.2 – Performance criteria for different subgroups given in Table E.1 . 49
146 Table F.1 – Examples of the BNT function of various EUT . 52
147 Table F.2 – ITU-T Recommendations for xDSL systems. 57
148 Table F.3 – Attenuation values representing cable lengths. 57
149 Table F.4 – Performance criteria against impulse duration . 60
150 Table G.1 – Test requirements for various MME . 62
151 Table G.2 – Measurement method and reference level setting . 62
152 Table G.3 – Performance criterion A – Limits for devices supporting telephony . 66
153 Table H.1 – Telephony functions, performance criteria . 72
154 Table I.1 – Exclusion bands, channelized systems . 76
155 Table I.2 – Exclusion bands, non-channelized systems . 77
156 Table I.3 – Examples of idle modes . 81
157 Table J.1 – Guidance on the selection of immunity levels to common radio
158 communication devices . 84
159 Table J.2 – Guidance on the selection of immunity levels to 5G NR radio
160 communication devices . 84
161 Table K.1 – Test requirements for example 1: a multifunction printer . 87
162 Table K.2 – Test details for example 1: a multifunction printer . 88
163 Table K.3 – Test requirements for example 2: flat panel television . 89
164 Table K.4 – Test details for example 2: flat panel television . 90
165 Table K.5 – Test requirements for example 3: notebook computer . 91
166 Table K.6 – Test details for example 3: notebook computer . 92
167 Table K.7 – Example test configurations and performance assessment methods
168 applicable to a PABX and associated terminals for continuous RF disturbance tests . 94
169 Table L.1 – Relative colour bar position . 95
170 Table L.2 – Primary colour contributions . 96
171 Table M.1 – Examples of specifications of digital broadcast signals . 97
172 Table N.1 – Summary of receiver input signal levels based upon various ETSI
173 requirements . 101
174 Table N.2 – Summary of solutions . 102
CISPR CDV ED2 © IEC 2025
177 INTERNATIONAL ELECTROTECHNICAL COMMISSION
178 ____________
180 ELECTROMAGNETIC COMPATIBILITY OF MULTIMEDIA EQUIPMENT –
181 IMMUNITY REQUIREMENTS
183 FOREWORD
184 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
185 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
186 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
187 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
188 Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
189 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
190 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
191 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
192 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
193 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
194 consensus of opinion on the relevant subjects since each technical committee has representation from all
195 interested IEC National Committees.
196 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
197 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
198 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
199 misinterpretation by any end user.
200 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
201 transparently to the maximum extent possible in their national and regional publications. Any divergence between
202 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
203 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
204 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
205 services carried out by independent certification bodies.
206 6) All users should ensure that they have the latest edition of this publication.
207 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
208 members of its technical committees and IEC National Committees for any personal injury, property damage or
209 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
210 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
211 Publications.
212 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
213 indispensable for the correct application of this publication.
214 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
215 rights. IEC shall not be held responsible for identifying any or all such patent rights.
216 CISPR 35 has been prepared by CISPR subcommittee I: Electromagnetic compatibility of
217 information technology equipment, multimedia equipment and receivers, of IEC technical
218 committee CISPR: International special committee on radio interference. It is an International
219 Standard.
220 This second edition cancels and replaces the first edition published in 2016. This edition
221 constitutes a technical revision.
222 This edition includes the following significant technical changes with respect to the previous
223 edition:
224 a) Added an annex to cover the radio function.
225 b) Extended the frequency range of continuous RF radiated disturbances
226 c) Refined the performance criterion
227 d) Updated the reference to the basic standards
CISPR CDV ED2 © IEC 2025
228 The text of this International Standard is based on the following documents:
Draft Report on voting
CISPR/I/XX/FDIS CISPR/I/XX/RVD
230 Full information on the voting for its approval can be found in the report on voting indicated in
231 the above table.
232 The language used for the development of this International Standard is English.
233 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
234 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
235 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
236 described in greater detail at www.iec.ch/publications.
237 The committee has decided that the contents of this document will remain unchanged until the
238 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
239 specific document. At this date, the document will be
240 • reconfirmed,
241 • withdrawn,
242 • replaced by a revised edition, or
243 • amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
CISPR CDV ED2 © IEC 2025
247 INTRODUCTION
248 This CISPR document establishes uniform requirements for the electromagnetic immunity of
249 multimedia equipment. The test methods are given within this document or in referenced basic
250 EMC immunity standards. This document specifies applicable tests, test levels, product
251 operating conditions and assessment criteria.
CISPR CDV ED2 © IEC 2025
254 ELECTROMAGNETIC COMPATIBILITY OF MULTIMEDIA EQUIPMENT –
255 IMMUNITY REQUIREMENTS
259 1 Scope
260 This document applies to multimedia equipment (MME) as defined in 3.1.31 and having a rated
261 rms AC or DC supply voltage not exceeding 600 V. This includes MME with radio function(s),
262 see Annex I.
263 NOTE 1 The classification of equipment as MME does not depend on the presence or absence of a radio transmitting
264 function, radio receiving function or radio transceiving function.
265 MME intended for any professional use is within the scope of this document.
266 MME for which immunity requirements in the frequency range covered by this document are
267 explicitly formulated in other current CISPR/IEC documents are excluded from the scope of this
268 document.
269 NOTE 2 Auxiliary equipment that is necessary to operate the MME (for example a power supply) can be considered
270 as part of the MME.
271 The objectives of this document are:
272 • to establish requirements which provide an adequate level of immunity so that the MME
273 will operate as intended in its environment;
274 • to specify procedures that ensure the reproducibility of tests and the repeatability of
275 results.
276 NOTE 3 There can be some extreme environmental conditions for MME which this document does not address.
277 Due to technology convergence of the functions of MME, the performance criteria have been
278 determined on a function-orientated basis rather than on an equipment-orientated basis.
279 2 Normative references
280 The following documents are referred to in the text in such a way that some or all of their content
281 constitutes requirements of this document. For dated references, only the edition cited applies.
282 For undated references, the latest edition of the referenced document (including any
283 amendments) applies.
284 CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus and
285 methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling devices
286 for conducted disturbance measurements
287 CISPR 16-1-2:2014/AMD 1:2017
288 IEC 61000-4-2:2025, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
289 measurement techniques – Electrostatic discharge immunity test
290 IEC 61000-4-3:2020, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
291 measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
292 IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
293 measurement techniques – Electrical fast transient/burst immunity test
CISPR CDV ED2 © IEC 2025
294 IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
295 measurement techniques – Surge immunity test
296 IEC 61000-4-5:2014/AMD1:2017
297 IEC 61000-4-6:2023, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
298 measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
299 fields
300 IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
301 measurement techniques – Power frequency magnetic field immunity test
302 IEC 61000-4-11:2020, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
303 measurement techniques – Voltage dips, short interruptions and voltage variations immunity
304 tests for equipment with input current up to 16 A per phase
305 IEC 61000-4-20:2022, Electromagnetic compatibility (EMC) – Part 4-20: Testing and
306 measurement techniques – Emission and immunity testing in transverse electromagnetic (TEM)
307 waveguides
308 IEC 61000-4-21:2011, Electromagnetic compatibility (EMC) – Part 4-21: Testing and
309 measurement techniques – Reverberation chamber test methods
310 3 Terms, definitions and abbreviated terms
311 3.1 Terms and definitions
312 For the purposes of this document, the following terms and definitions apply.
313 ISO and IEC maintain terminology databases for use in standardization at the following
314 addresses:
315 • IEC Electropedia: available at https://www.electropedia.org/
316 • ISO Online browsing platform: available at https://www.iso.org/obp
317 NOTE Terms and definitions related to EMC and to relevant phenomena are given in IEC 60050-161. Attention is
318 drawn to the fact that a common set of definitions has been written for both CISPR 32 and CISPR 35. It is noted that
319 some terms and definitions will only be used in one of these two documents but for purposes of consistency they are
320 intentionally included in both.
321 3.1.1
322 AC mains power port
323 port used to connect to the mains supply network
324 Note 1 to entry: An EUT with a DC power port which is powered by a dedicated AC/DC power converter is defined
325 as AC mains powered equipment.
326 3.1.2
327 acoustic reference level
328 acoustic level determined in accordance with Clause G.3
329 3.1.3
330 analogue/digital data port
331 signal/control port (3.1.46), antenna port (3.1.4), wired network port (3.1.50), broadcast receiver
332 tuner port (3.1.10), or optical fibre port (3.1.33) with metallic shielding and/or metallic strain
333 relief member(s)
334 Note 1 to entry: These include input and output ports.
CISPR CDV ED2 © IEC 2025
335 3.1.4
336 antenna port
337 port, other than a broadcast receiver tuner port (3.1.10), for connection of an antenna used for
338 intentional transmission and/or reception of radiated RF energy
339 3.1.5
340 arrangement
341 physical layout and orientation of all the parts of the EUT, AE and any associated cabling,
342 located within the test area
343 3.1.6
344 associated equipment
345 AE
346 equipment needed to exercise and/or monitor the operation of the EUT
347 Note 1 to entry: The AE may be either local (within the measurement or test area) or remote.
348 3.1.7
349 audio equipment
350 equipment which has a primary function of either (or a combination of) generation, input,
351 storage, play, retrieval, transmission, reception, amplification, processing, switching or control
352 of audio signals
353 3.1.8
354 audio output port
355 output port intended for direct connection to a loudspeaker (3.1.29) or on-ear device (3.1.33)
356 Note 1 to entry: This port could also be described as an audio transducer driver port.
357 3.1.9
358 broadcast receiver equipment
359 equipment containing a tuner that is intended for the reception of broadcast services
360 Note 1 to entry: These broadcast services are typically television and radio services, including terrestrial broadcast,
361 satellite broadcast and/or cable transmission.
362 Note 2 to entry: Examples of broadcast service are given in Annex M.
363 3.1.10
364 broadcast receiver tuner port
365 port intended for the reception of a modulated RF signal carrying terrestrial, satellite and/or
366 cable transmissions of audio and/or video broadcast and similar services
367 Note 1 to entry: This port may be connected to an antenna, a cable distribution system, an RF modulator output
368 port (3.1.44) or similar device.
369 3.1.11
370 channel width
371 CHW
372 frequency range between a lower edge frequency f up to and including an upper edge
chwlow
373 frequency f that encompasses the transmission from the EUT
chwhigh
374 Note 1 to entry: See Figure 1 for an illustration (not to scale) of CHW.
375 Note 2 to entry: Some standards use the term channel bandwidth, instead of CHW.
CISPR CDV ED2 © IEC 2025
channel width
fchwlow f chwhigh
378 Figure 1 – Channel width
379 3.1.12
380 configuration
381 operational conditions of the EUT and AE, consisting of the set of hardware elements selected
382 to comprise the EUT and AE, the mode of operation (3.1.30) used to exercise the EUT and
383 arrangement (3.1.5) of the EUT and AE
384 3.1.13
385 converted common mode current
386 asymmetrical mode current converted from differential mode current by the unbalance of an
387 attached cable and/or network
388 3.1.14
389 critical stored data
390 data that is essential for an EUT to perform a primary function in accordance with the EUT’s
391 specification and is expected to remain unchanged at the completion of the test
392 Note 1 to entry: This includes data previously stored by the user but excludes temporary data created during the
393 operation of the function. See Figure K.1.
394 3.1.15
395 customer premise equipment
396 CPE
397 equipment attached to a public wired network (3.1.43) at a network termination point (NTP)
398 3.1.16
399 dBm
400 power P in W of a signal expressed as a ratio x dB to 1 mW, calculated as
401 x = 10 lgP + 30
402 where
403 P = V /R for an rms voltage V (V) across a resistance R (Ω)
404 Note 1 to entry: In 600 Ω systems, such as access telecommunication networks, 0 dBm corresponds to
405 approximately 775 mV. In 50 Ω systems, 0 dBm corresponds to approximately 224 mV.
406 3.1.17
407 dBm0
408 absolute signal level in dBm, referred to as a point of zero relative level
409 Note 1 to entry: See ITU-T Recommendation G.100.1.
CISPR CDV ED2 © IEC 2025
410 3.1.18
411 DC network power port
412 port, not powered by an AC/DC power converter and not supporting communication, that
413 connects to a DC supply network
414 Note 1 to entry: DC power ports supporting communication are considered to be wired network ports (3.1.50), for
415 example Ethernet ports which include power over Ethernet (POE).
416 Note 2 to entry: Examples of DC networks include 48V DC systems in central offices and data centres.
417 3.1.19
418 demodulated audio level
419 level of unwanted audio signal measured at the output port during the test and caused by the
420 applied disturbance
421 Note 1 to entry: This is an unintentional response of the EUT.
422 3.1.20
423 electrical interference ratio
424 ratio of the demodulated audio level to the electrical reference level
425 3.1.21
426 electrical reference level
427 electrical level determined in accordance with Clause G.3
428 3.1.22
429 enclosure port
430 physical boundary of the EUT through which electromagnetic fields may radiate or may enter
431 3.1.23
432 entertainment lighting control equipment
433 equipment generating or processing electrical signals for controlling the intensity, colour, nature
434 or direction of the light from a luminaire, where the intention is to create artistic effects in
435 theatrical, televisual or musical productions and visual presentations
436 3.1.24
437 Equipment Under Test
438 EUT
439 multimedia equipment (MME) being evaluated for compliance with the requirements of this
440 document
441 3.1.25
442 exclusion band
443 measurement frequency range where certain EMC immunity requirements are modified based
444 on the characteristics of a radio function
445 Note 1 to entry: Typically include the operating frequency range (OFR) of the radio function. See Figure 2 and
446 Figure 3.
Exclusion band
OFR
Extension value
Extension value
448 Figure 2 – Exclusion band for a channelized system
CISPR CDV ED2 © IEC 2025
Exclusion band
Occupied bandwidth
f
o
Extension value Extension value
450 Figure 3 – Exclusion band for a non-channelized system
451 3.1.26
452 formal measurement
453 measurement used to determine compliance
454 Note 1 to entry: This is often the final measurement performed. It may be carried out following a prescan
455 measurement. It is the measurement recorded in the test report.
456 3.1.27
457 function
458 operation carried out by an MME
459 Note 1 to entry: Functions are related to basic technologies incorporated in the MME such as: displaying, recording,
460 processing, controlling (including control of lighting operations, see 3.1.23), reproducing, transmitting, or receiving
461 single medium or multimedia content. Where relevant the content may be data, audio or video, either individually or
462 in combination.
463 3.1.28
464 information technology equipment
465 ITE
466 equipment having a primary function of either (or a combination of) entry, storage, display,
467 retrieval, transmission, processing, switching, or control of data and/or telecommunication
468 messages and which may be equipped with one or more ports typically for information transfer
469 Note 1 to entry: Examples include data processing equipment, office machines, electronic business equipment and
470 telecommunication equipment.
471 3.1.29
472 loudspeaker
473 electro-acoustic transducer intended to produce audible sound for a listener, and not intended
474 for direct coupling to a listener’s ear
475 3.1.30
476 mode of operation
477 set of operational states of all functions of an EUT during a test or measurement
478 3.1.31
479 multimedia equipment
480 MME
481 equipment that is ITE (3.1.28), audio equipment (3.1.7), video equipment (3.1.49), equipment
482 with a broadcast reception function (3.1.9), entertainment lighting control equipment (3.1.23) or
483 a combination of these
484 3.1.32
485 occupied bandwidth
486 OBw
487 width of a frequency band such that, below the lower and above the upper frequency limits, the
488 mean powers emitted are each equal to a specified percentage β/2 of the total mean power of
489 a given emission; Unless otherwise specified in a ITU-R recommendation for the appropriate
CISPR CDV ED2 © IEC 2025
490 class of emission, the value of β/2 should be taken as 0,5 % (see ITU Radio Regulations,
491 Article 1, Section VI).
492 Note 1 to entry: See Figure 4 for an illustration (not to scale) of occupied bandwidth.
494 Figure 4 – Occupied bandwidth
495 3.1.33
496 on-ear device
497 electro-acoustic transducer intended to produce audible sound and intended for direct coupling
498 t
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