Measurement procedures of magnetic field levels generated by electronic and electrical equipment in the automotive environment with respect to human exposure - Part 1: Low-frequency magnetic fields

IEC 62764-1:2022 specifies a methodology for determining the exposure to multiple magnetic field sources for passenger cars and light commercial vehicles including standardized operating conditions and measurement volumes and/or surfaces. This part of IEC 62764 applies to the assessment of human exposure to low-frequency magnetic fields generated by automotive vehicles. For plug-in vehicles, this includes the electric vehicle supply equipment (EVSE) and associated cables provided by the car manufacturer. This excludes the charging station. This document specifies the measurement procedure for the evaluation of magnetic field exposures generated by electronic and electrical equipment (excluding intentionally transmitting radio frequency antennas) in selected automotive environments, for passenger cars and commercial vehicles of categories M1 and N1 as defined in ECE/TRANS/WP.29/78/Rev.3 [1], with respect to human exposure. It provides standardized operating conditions and defines recommended measurements to assess compliance with the applicable exposure requirements. This document covers the frequency range 1 Hz to 100 kHz and is applicable to any type of engine and/or internal energy source.

Verfahren für die Messung von magnetischen Feldern, die von elektrischen und elektronischen Geräten und Einrichtungen in der Straßenfahrzeugumgebung erzeugt werden, in Bezug auf die Exposition von Personen - Teil 1: Niederfrequente magnetische Felder

Procédures de mesure de l'exposition humaine aux niveaux de champs magnétiques générés par les accessoires électroniques et électriques dans l'environnement automobile - Partie 1: Champs magnétiques à basse fréquence

L'IEC 62764-1:2022 spécifie une méthodologie pour déterminer l’exposition à plusieurs sources de champs magnétiques pour les voitures particulières et les véhicules utilitaires légers, y compris les conditions de fonctionnement normalisées et les volumes et/ou surfaces de mesure. La présente partie de l'IEC 62764 s’applique à l’évaluation de l’exposition humaine aux champs magnétiques à basse fréquence générés par les véhicules automobiles. Pour les véhicules rechargeables, cela inclut l’équipement d’alimentation des véhicules électriques (EVSE) et les câbles associés fournis par le constructeur automobile. Cela exclut la station de charge. Le présent document spécifie la procédure de mesure pour l’évaluation des expositions aux champs magnétiques générées par les équipements électroniques et électriques (à l’exclusion des antennes de radiofréquence émettant intentionnellement) dans certains environnements automobiles, pour les voitures particulières et les véhicules utilitaires des catégories M1 et N1 telles que définies dans la norme ECE/TRANS/WP.29/78/Rev.3 [1][1], en ce qui concerne l’exposition humaine. Il fournit des conditions de fonctionnement normalisées et définit les mesures recommandées pour évaluer la conformité aux exigences applicables en matière d’exposition. Le présent document couvre la gamme de fréquences de 1 Hz à 100 kHz et s’applique à tout type de moteur et/ou de source d’énergie interne.

Merilni postopki nivojev magnetnih polj, ki jih generirata elektronska in električna oprema v motornih vozilih, glede na izpostavljenost ljudi - 1. del: Nizkofrekvenčno magnetno polje

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SLOVENSKI STANDARD
oSIST prEN IEC 62764-1:2021
01-julij-2021

Merilni postopki nivojev magnetnih polj, ki jih generirata elektronska in električna

oprema v motornih vozilih, glede na izpostavljenost ljudi - 1. del: Nizkofrekvenčno

magnetno polje

Measurement procedures of magnetic field levels generated by electronic and electrical

equipment in the automotive environment with respect to human exposure - Part 1: Low

frequency magnetic fields

Merilni postopki nivojev magnetnih polj, ki jih generirajo električni aparati v železniškem

okolju glede na izpostavljenost človeka

Measurement procedures of magnetic field levels generated by electronic and electrical

apparatus in the railway environment with respect to human exposure
Ta slovenski standard je istoveten z: prEN IEC 62764-1:2021
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
oSIST prEN IEC 62764-1:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 62764-1:2021
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oSIST prEN IEC 62764-1:2021
106/547/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62764-1 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-05-28 2021-08-20
SUPERSEDES DOCUMENTS:
106/531/NP, 106/540/RVN

IEC TC 106 : METHODS FOR THE ASSESSMENT OF ELECTRIC, MAGNETIC AND ELECTROMAGNETIC FIELDS ASSOCIATED

WITH HUMAN EXPOSURE
SECRETARIAT: SECRETARY:
Germany Mr Diego Cuartielles
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 9,TC 27,SC 62A,SC 62B,TC 69,TC 77,TC
96,TC 100,TC 124,TC 125,CISPR
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

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.
TITLE:

Measurement procedures of magnetic field levels generated by electronic and electrical

equipment in the automotive environment with respect to human exposure - Part 1: Low

frequency magnetic fields
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:

The TC106 secretary thanks the NC for all comments received on the NWIP stage, these comments

will be worked together with CDV comments.

Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

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.
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1 CONTENTS

2 CONTENTS ............................................................................................................................ 2

3 FOREWORD ........................................................................................................................... 4

4 INTRODUCTION ..................................................................................................................... 6

5 1 Scope .............................................................................................................................. 7

6 2 Normative references ...................................................................................................... 7

7 3 Terms, definitions and abbreviated terms ........................................................................ 7

8 3.1 Terms and definitions .............................................................................................. 7

9 3.2 Abbreviated terms ................................................................................................... 8

10 4 Measurement procedure .................................................................................................. 8

11 4.1 Measurement phases .............................................................................................. 8

12 4.2 Measuring conditions .............................................................................................. 8

13 4.3 Test site .................................................................................................................. 8

14 4.4 Vehicle set-up ......................................................................................................... 9

15 4.5 Measurement locations ........................................................................................... 9

16 4.5.1 General ........................................................................................................... 9

17 4.5.2 Inside the vehicle ............................................................................................. 9

18 4.5.3 Outside the vehicle ........................................................................................ 10

19 5 Measurement technique ................................................................................................ 10

20 5.1 Measuring equipment ............................................................................................ 10

21 5.2 Measurement of the magnetic field exposure ........................................................ 11

22 6 Measurement procedure ................................................................................................ 11

23 6.1 Vehicle in stationary mode .................................................................................... 11

24 6.1.1 General ......................................................................................................... 11

25 6.1.2 Flowchart ....................................................................................................... 11

26 6.1.3 Phase 1: vehicle preparation ......................................................................... 11

27 6.1.4 Phase 2: vehicle set-up ................................................................................. 11

28 6.1.5 Phase 3: vehicle measurement ...................................................................... 12

29 6.2 Vehicle in driving mode ......................................................................................... 12

30 6.2.1 General ......................................................................................................... 12

31 6.2.2 Flowchart ....................................................................................................... 12

32 6.2.3 Phase 1: vehicle preparation ......................................................................... 12

33 6.2.4 Phase 2: vehicle set-up ................................................................................. 12

34 6.2.5 Phase 3: vehicle measurement (at constant speed) ....................................... 12

35 6.2.6 Phase 4: optional measurements ................................................................... 13

36 6.3 Vehicle in acceleration mode ................................................................................ 13

37 6.3.1 General ......................................................................................................... 13

38 6.3.2 Flowchart ....................................................................................................... 13

39 6.3.3 Phase 1: vehicle preparation ......................................................................... 13

40 6.3.4 Phase 2: vehicle set-up ................................................................................. 13

41 6.3.5 Phase 3: vehicle measurement (in acceleration) ............................................ 13

42 6.4 Vehicle in plug-in charging mode .......................................................................... 14

43 6.4.1 General ......................................................................................................... 14

44 6.4.2 Flowchart ....................................................................................................... 14

45 6.4.3 Phase 1: vehicle preparation ......................................................................... 14

46 6.4.4 Phase 2: vehicle set-up ................................................................................. 15

47 6.4.5 Phase 3: vehicle measurement ...................................................................... 15

48 7 Test report ..................................................................................................................... 15

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49 8 Exposure assessment .................................................................................................... 16

50 Annex A (informative) Practical measurement advice ........................................................... 17

51 Annex B (informative) Maximum extents of measurement volumes inside the vehicle .......... 18

52 B.1 Motivation ............................................................................................................. 18

53 B.2 Anthropometrical information ................................................................................ 18

54 B.3 Maximum extents of measurement volumes .......................................................... 19

55 Annex C ................................................................................................................................ 20

56 C.1 Background ................................................................................................................... 20

57 C.2 Magnitude of proximity and orientation related errors .................................................... 20

58 C.3 Dipole source contributions to uncertainty parameters ................................................... 22

59 Annex D ................................................................................................................................ 24

60 D.1 General ......................................................................................................................... 24

61 The measurement procedure for the evaluation of the magnetic field levels in the

62 automotive environment includes some uncertainty factors that should be

63 considered. This annex provides an example of an uncertainty budget for vehicle

64 measurements. .............................................................................................................. 24

65 D.2 Uncertainty budget ......................................................................................................... 24

66 Bibliography .......................................................................................................................... 26

68 Figure 1 – Example of test volumes taking account of all body parts for a left-hand

69 drive vehicle ......................................................................................................................... 10

70 Figure 2 – Specific stationary mode set-up and test .............................................................. 11

71 Figure 3 – Specific driving mode set-up and test ................................................................... 12

72 Figure 4 – Specific acceleration mode set-up and test .......................................................... 13

73 Figure 5 – Specific plug-in charging mode set-up and test .................................................... 14

74 Figure 6 – Plug-in charging cable positioning ........................................................................ 15

75 Figure A.1 – Disc spacer around two types of measurement probes ...................................... 17

76 Figure A.2 – Hemispherical spacer around two types of measurement probes ...................... 17

77 Figure B.1 – Summary of relevant anthropometrical data ...................................................... 18

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80 INTERNATIONAL ELECTROTECHNICAL COMMISSION
81 ____________
83 MEASUREMENT PROCEDURES OF MAGNETIC FIELD LEVELS
84 GENERATED BY ELECTRONIC AND ELECTRICAL EQUIPMENT IN THE
85 AUTOMOTIVE ENVIRONMENT WITH RESPECT TO HUMAN EXPOSURE –
87 Part 1: Low frequency magnetic fields
89 FOREWORD

90 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

91 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

92 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

93 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

94 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

95 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

96 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

97 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

98 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

99 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

100 consensus of opinion on the relevant subjects since each technical committee has representation from all

101 interested IEC National Committees.

102 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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104 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

105 misinterpretation by any end user.

106 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

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109 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

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111 services carried out by independent certification bodies.

112 6) All users should ensure that they have the latest edition of this publication.

113 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

114 members of its technical committees and IEC National Committees for any personal injury, property damage or

115 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

116 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

117 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

118 indispensable for the correct application of this publication.

119 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

120 rights. IEC shall not be held responsible for identifying any or all such patent rights.

121 The main task of IEC technical committees is to prepare International Standards. In exceptional

122 circumstances, a technical committee may propose the publication of a Technical Specification

123 when

124 • the required support cannot be obtained for the publication of an International Standard,

125 despite repeated efforts, or

126 • the subject is still under technical development or where, for any other reason, there is the

127 future but no immediate possibility of an agreement on an International Standard.

128 Technical Specifications are subject to review within three years of publication to decide

129 whether they can be transformed into International Standards.

130 IEC TS 62764-1, which is a Technical Specification, has been prepared by IEC technical

131 committee 106: Methods for the assessment of electric, magnetic and electromagnetic fields

132 associated with human exposure.
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133 The text of this Technical Specification is based on the following documents:

Draft TS Report on voting
106/477/DTS 106/493/RVDTS
134

135 Full information on the voting for the approval of this Technical Specification can be found in

136 the report on voting indicated in the above table.

137 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

138 A list of all parts in the IEC 62764 series, published under the general title Measurement

139 procedures of magnetic field levels generated by electronic and electrical equipment in the

140 automotive environment with respect to human exposure, can be found on the IEC website.

141 The committee has decided that the contents of this publication will remain unchanged until the

142 maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data

143 related to the specific publication. At this date, the publication will be
144 • reconfirmed,
145 • withdrawn,
146 • replaced by a revised edition, or
147 • amended.
148 A bilingual version of this publication may be issued at a later date.
149

IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.

150
151
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152 INTRODUCTION

153 This document specifies a methodology for determining the exposure to multiple magnetic field

154 sources for passenger cars and light commercial vehicles including standardized operating

155 conditions and measurement volumes and/or surfaces.
156
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157 MEASUREMENT PROCEDURES OF MAGNETIC FIELD LEVELS
158 GENERATED BY ELECTRONIC AND ELECTRICAL EQUIPMENT IN THE
159 AUTOMOTIVE ENVIRONMENT WITH RESPECT TO HUMAN EXPOSURE –
160
161 Part 1: Low frequency magnetic fields
162
163 1 Scope

164 This part of IEC 62764 applies to the assessment of human exposure to low frequency magnetic

165 fields generated by automotive vehicles. For plug-in vehicles, this includes the electric vehicle

166 supply equipment (EVSE) and associated cables provided by the car manufacturer.

167 The scope of this document establishes the measurement procedure for the evaluation of

168 magnetic field levels generated by electronic and electrical equipment (excluding intentionally

169 transmitting equipment) in selected automotive environments, for passenger cars and

170 commercial vehicles of categories M1 and N1 as defined in ECE/TRANS/WP.29/78/Rev.3 [1] ,

171 with respect to human exposure. It provides standardized operating conditions and defines

172 recommended measurements to assess compliance to the applicable exposure requirements.

173 This document covers the frequency range 1 Hz to 400 kHz and is applicable to any type of

174 engine and/or internal energy source.

175 The scope of this document does not include procedures for assessment of human exposure to

176 electromagnetic fields generated by wireless power transfer (WPT) equipment operating in

177 automotive environments. Exposure assessment procedures for WPT equipment are covered

178 by IEC TR 62905 [2].

179 Abnormal operation of the vehicle or equipment under test is not taken into consideration.

180 2 Normative references

181 The following documents are referred to in the text in such a way that some or all of their content

182 constitutes requirements of this document. For dated references, only the edition cited applies.

183 For undated references, the latest edition of the referenced document (including any

184 amendments) applies.

185 IEC 61786-1:2013, Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz

186 to 100 kHz with regard to exposure of human beings – Part 1: Requirements for measuring

187 instruments

188 IEC 62311:2019, Assessment of electronic and electrical equipment related to human exposure

189 restrictions for electromagnetic fields (0 Hz to 300 GHz)
190 3 Terms, definitions and abbreviated terms
191 3.1 Terms and definitions

192 For the purposes of this document, the following terms and definitions apply.

193 ISO and IEC maintain terminological databases for use in standardization at the following

194 addresses:
195 • IEC Electropedia: available at http://www.electropedia.org/
196 • ISO Online browsing platform: available at http://www.iso.org/obp
197 3.1.1
198 applicable requirement

199 particular requirement regarding human exposure to low-frequency magnetic fields against

200 which the vehicle under test is to be assessed using the methods outlined in this document

____________
Numbers in square brackets refer to the Bibliography.
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201 Note to entry: Examples of such requirements can be found in [3] to [10].
202 3.1.2
203 magnetic field exposure

204 specific metric that are used to quantify human exposure to low-frequency magnetic fields in

205 the applicable requirement
206 Note to entry: Examples of such metrics can be found in [3] to [10].
207 3.1.3
208 powertrain
209 main system that generates power and delivers it to the road surface
210 3.2 Abbreviated terms
211 EV electric vehicle
212 EVSE electric vehicle supply equipment
213 HEV hybrid electric vehicle, including
214 ICEV internal combustion engine vehicle
215 MHEV mild hybrid electric vehicle
216 SOC state of charge indicated to the driver
217 WPT wireless power transfer
218 4 Measurement procedure
219 4.1 Measurement phases

220 The measurement procedure is divided into four parts regarding the operational vehicle use:

221 1) vehicle in stationary mode;
222 2) vehicle in driving mode;
223 3) vehicle in acceleration mode;
224 4) vehicle in plug-in charging mode.
225 These four parts are described in detail in Clause 6.
226 4.2 Measuring conditions

227 The measurements cover only sources of persistent magnetic field exposure. Continuous

228 occurring sources, or repetitive transient sources such as fan, wipers are included. Transient

229 electrical functions of short duration activated occasionally by the driver, passengers or the

230 vehicle itself are not considered in this document, in particular the horn, the motorized mirror

231 and the door-lock motor.

232 NOTE The rotation of the tyres can produce low-frequency magnetic fields (typically below 50 Hz, depending on

233 the speed of the vehicle) in and surrounding the vehicle, due to the static magnetization of the tyres [11][12]. This

234 can only contribute to measurements inside the vehicle (since no measurements are to be performed around the

235 vehicle in dynamic mode).

236 The measurements are performed in the vehicle’s standard modes of operation, generating the

237 expected highest levels of magnetic field exposure in measuring volumes that are

238 representative of the occupant (Annex B) and bystander locations.
239 4.3 Test site

240 Measurements shall be performed in an area having ambient magnetic field exposure values of

241 less than 10 % of the values given in the requirements in the measurement volumes.

242 The ambient magnetic field exposure shall be measured with or without the vehicle under test,

243 but in conditions that are representative of the vehicle test. This measurement can be performed

244 before each test or periodically in accordance with the laboratory’s quality management

245 processes.

246 A dynamometer (or roller bench) may be used if it rotates all the driven wheels of the vehicle.

247 It shall be set to simulate the outdoor dynamics of the vehicle including at least its steady-state

248 torque in driving mode and its inertial mass during acceleration mode.
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249 If an outdoor track is used, the slope of the section of the track used for the tests shall be in

250 the range ±2 %.

251 NOTE In the case of a dynamometer, the ambient magnetic field exposure can depend on the torque and/or speed

252 of the dynamometer.
253 4.4 Vehicle set-up

254 The following configuration is recommended within the passenger compartment, where

255 practicable:

256 – all seats except the rearmost seats, if adjustable, centre-positioned horizontally and at the

257 lowest position vertically;

258 – the rearmost seats, if horizontally adjustable, in their rearmost position;

259 – the headrests in the fully-back position;

260 – all seat backs except for the rearmost seats, if adjustable, approximately 15° back from the

261 vertical;

262 – all seat backs of the rearmost seats, if adjustable, fully tilted backwards;

263 – the steering wheel centre-positioned vertically and horizontally.
264 4.5 Measurement locations
265 4.5.1 General

266 Measurements are performed in all regions of the vehicle that are accessible by the driver and

267 passengers, and in the immediate vicinity of the vehicle for bystanders. These include the driver

268 and passenger area (cabin), the cargo storage area, the engine and/or the electric powertrain

269 areas, and the areas around the outside of the vehicle.

270 The measurement distance between the surface of any part of the vehicle and the centre of the

271 probe shall be 0,20 m (see Annex A). This distance ensures an acceptable measurement

272 uncertainty for a 100 cm2 probe (see Annex C).
273 4.5.2 Inside the vehicle

274 Measurements shall be performed throughout the volumes accessible in normal vehicle use

275 cases by parts of the human body to which the applicable exposure requirements apply. These

276 volumes shall be defined by the car manufacturer depending on the car model under test. For

277 example, in the passenger compartment, occupants are assumed to be seated in positions

278 where restraint systems are provided. An example of test volumes taking account of all body

279 parts is illustrated in Figure 1.

280 Measurements are not required where the components are mounted (no components or parts

281 have to be removed to perform the measurements).
282
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283
284 Figure 1 – Example of test volumes taking account of all body parts
285 for a left-hand drive vehicle
286 In the example shown in Figure 1, the following apply.

287 – For individual seats, the occupants are represented by three volumes corresponding to

288 (A) the feet, (B) the legs, and (C) the trunk and head. For bench seats, the occupants are

289 represented by three common volumes: D, E and F.

290 – The volume G represents the arms and hands on the steering wheel (which can be on either

291 or both the left-hand side and right-hand side of the vehicle, or in the centre).

292 – Measurements can also have to be performed over the engine and/or the electric powertrain

293 in H and/or I only in stationary and charging modes and if people are permitted to access

294 these areas while the engine is running and/or the electric powertrain is active. The bottom

295 of H can be a smooth envelope above all contained components.

296 Volumes B, C, E and F could also take into account the positions of babies and infants.

297 NOTE These test volumes are examples defined with consideration of all body parts (including potential exposure

298 of extremities in volumes A, D, G, H and I), but it is possible that some standards or regulations do not apply to the

299 whole body.

300 Measurement in the areas of the driver's position can be achieved by different means including

301 the use of a dynamometer. Appropriate safety measures shall be employed to avoid accidents

302 due to operation of the dynamometer during measurements.
303 4.5.3 Outside the vehicle

304 Measurements shall be performed around the outside of the vehicle in all areas accessible to

305 parts of the human body identified in the applicable requirements.
306 5 Measurement technique
307 5.1 Measuring equipment

308 The measuring equipment shall include a probe covering the frequency range defined in

309 Clause 1. The probe shall comply with the requirements of IEC 6178
...

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