Assessment of the compliance of low power electronic and electrical equipment with the basic restrictions related to human exposure to electromagnetic fields (10 MHz to 300 GHz)

IEC 62479:2010 provides simple conformity assessment methods for low-power electronic and electrical equipment to an exposure limit relevant to electromagnetic fields (EMF). If such equipment cannot be shown to comply with the applicable EMF exposure requirements using the methods included in this standard for EMF assessment, then other standards, including IEC 62311 or other (EMF) product standards, may be used for conformity assessment.

Beurteilung der Übereinstimmung von elektronischen und elektrischen Geräten kleiner Leistung mit den Basisgrenzwerten für die Sicherheit von Personen in elektromagnetischen Feldern (10 MHz bis 300 GHz)

Evaluation de la conformité des appareils électriques et électroniques de faible puissance aux restrictions de base concernant l'exposition des personnes aux champs électromagnétiques (10 MHz à 300 GHz)

La CEI 62479:2010 fournit des méthodes simples pour l'évaluation de la conformité des appareils électriques et électroniques de faible puissance à une limite d'exposition pertinente pour les champs électromagnétiques (CEM). Si on ne peut pas montrer, en utilisant les méthodes d'évaluation des CEM de la présente norme, qu'un appareil satisfait aux exigences d'exposition aux CEM applicables, alors d'autres normes, incluant la norme CEI 62311 ou d'autres normes de produit (CEM), peuvent être employées pour l'évaluation de la conformité.",PE

Ocena ustreznosti nizkonapetostnih elektronskih in električnih aparatov glede na osnovne mejne vrednosti izpostavljenosti ljudi elektromagnetnemu sevanju (10 MHz - 300 GHz) (IEC 62479:2010, spremenjen)

Ta mednarodni standard določa preproste metode ugotavljanja skladnosti  nizkonapetostnih elektronskih in električnih aparatov pri mejni vrednosti izpostavljenosti, ki ustreza elektromagnetnemu sevanju(EMF). Če se za tako opremo ne more dokazati, da je v skladu z ustreznimi zahtevami glede izpostavlejnosti EMF z metodami, vključenimi v ta standard, za ocenjevanja EMF, potem se lahko drugi standardi, vključno z 62311 ali drugimi (EMF) standardi za izdelke, uporabijo za ugotavljanje skladnosti.

General Information

Status
Published
Publication Date
16-Sep-2010
Current Stage
6060 - Document made available
Due Date
17-Sep-2010
Completion Date
17-Sep-2010

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SLOVENSKI STANDARD
SIST EN 62479:2010
01-december-2010
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SIST EN 50371:2002
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Assessment of the compliance of low power electronic and electrical equipment with the

basic restrictions related to human exposure to electromagnetic fields (10 MHz to 300

GHz) (IEC 62479:2010, modified)

Beurteilung der Übereinstimmung von elektronischen und elektrischen Geräten kleiner

Leistung mit den Basisgrenzwerten für die Sicherheit von Personen in
elektromagnetischen Feldern (10 MHz bis 300 GHz) (IEC 62479:2010, modifiziert)
Evaluation de la conformité des appareils électriques et électroniques de faible

puissance aux restrictions de base concernant l'exposition des personnes aux champs

électromagnétiques (10 MHz à 300 GHz) (CEI 62479:2010, modifiée)
Ta slovenski standard je istoveten z: EN 62479:2010
ICS:
13.280 Varstvo pred sevanjem Radiation protection
SIST EN 62479:2010 en

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

---------------------- Page: 1 ----------------------
SIST EN 62479:2010
---------------------- Page: 2 ----------------------
SIST EN 62479:2010
EUROPEAN STANDARD
EN 62479
NORME EUROPÉENNE
September 2010
EUROPÄISCHE NORM
ICS 17.220.20; 35.020 Supersedes EN 50371:2002
English version
Assessment of the compliance of low power electronic and electrical
equipment with the basic restrictions related to human exposure to
electromagnetic fields (10 MHz to 300 GHz)
(IEC 62479:2010, modified)
Evaluation de la conformité des appareils Beurteilung der Übereinstimmung von
électriques et électroniques de faible elektronischen und elektrischen Geräten
puissance aux restrictions de base kleiner Leistung mit den Basisgrenzwerten
concernant l'exposition des personnes für die Sicherheit von Personen
aux champs électromagnétiques in elektromagnetischen Feldern
(10 MHz à 300 GHz) (10 MHz bis 300 GHz)
(CEI 62479:2010, modifiée) (IEC 62479:2010, modifiziert)

This European Standard was approved by CENELEC on 2010-09-01. 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 Central Secretariat 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 Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,

Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,

Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62479:2010 E
---------------------- Page: 3 ----------------------
SIST EN 62479:2010
EN 62479:2010 - 2 -
Foreword

The text of document 106/198/FDIS, future edition 1 of IEC 62479, prepared by IEC TC 106, Methods for

the assessment of electric, magnetic and electromagnetic fields associated with human exposure, was

submitted to the IEC-CENELEC parallel vote.

A draft amendment to the European Standard was prepared by the Technical Committee CENELEC

TC 106X, Electromagnetic fields in the human environment. It was submitted to the Unique Acceptance

Procedure.
The combined texts were approved by CENELEC as EN 62479 on 2010-09-01.
This European Standard supersedes EN 50371:2002.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent

rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-09-01
Annex ZA has been added by CENELEC.
__________
---------------------- Page: 4 ----------------------
SIST EN 62479:2010
- 3 - EN 62479:2010
Endorsement notice

The text of the International Standard IEC 62479:2010 was approved by CENELEC as a European

Standard with agreed common modifications as given below.

In the official version, for Bibliography, the following note has to be added for the standard indicated:

ISO/IEC 17025:2005 NOTE Harmonized as EN ISO/IEC 17025:2005 (not modified).
COMMON MODIFICATIONS
2 Normative references
Add:

Council Recommendation 1999/519/EC of 12 July 1999 on the limitation of exposure of the general public

to electromagnetic fields (0 Hz to 300 GHz), Official Journal L 199 of 30 July 1999.

3 Terms and definitions
3.4
basic restriction
Add the following note:

NOTE Basic restrictions can be found in Annex II (Table 1) of the Council Recommendation 1999/519/EC.

4 Conformity assessment methods
4.1 General considerations
Add before the first paragraph:

The electronic and electro technical apparatus shall comply with the basic restriction as specified in

Annex II of Council Recommendation 1999/519/EC.

NOTE 1 The Council Recommendation 1999/519/EC is based on the ICNIRP guidelines [1] with some additional restrictions.

NOTE 2 The time averaging in the EU-Recommendation applies.
__________
---------------------- Page: 5 ----------------------
SIST EN 62479:2010
EN 62479:2010 - 4 -
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 62311 (mod) - Assessment of electronic and electrical EN 62311 -
equipment related to human exposure
restrictions for electromagnetic fields
(0 Hz - 300 GHz)
---------------------- Page: 6 ----------------------
SIST EN 62479:2010
IEC 62479
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Assesment of the compliance of low-power electronic and electrical equipment
with the basic restrictions related to human exposure to electromagnetic fields
(10 MHz to 300 GHz)
Évaluation de la conformité des appareils électriques et électroniques de faible
puissance aux restrictions de base concernant l’exposition des personnes aux
champs électromagnétiques (10 MHz à 300 GHz)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 17.220.20; 35.020 ISBN 978-2-88910-989-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 62479:2010
– 2 – 62479 © IEC:2010
CONTENTS

FOREWORD...........................................................................................................................3

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

2 Normative references .......................................................................................................5

3 Terms and definitions .......................................................................................................5

4 Conformity assessment methods ......................................................................................8

4.1 General considerations............................................................................................8

4.2 Low-power exclusion level (P ) ............................................................................9

max

4.3 Exposure to multiple transmitting sources .............................................................10

5 EMF assessment report..................................................................................................10

5.1 General considerations..........................................................................................10

5.2 Equipment-related information...............................................................................10

6 Use of measurement uncertainty in the evaluation of compliance to limits ......................10

Annex A (informative) Derivation of low-power exclusion level from ICNIRP and IEEE

exposure limits .....................................................................................................................12

Annex B (informative) Derivation of alternative low-power exclusion levels for wireless

devices used close to the body .............................................................................................14

Annex C (informative) Compliance requirement for a pulsed field.........................................17

Annex D (informative) Topics from ISO/IEC 17025 relevant for EMF assessment

reports ..................................................................................................................................18

Bibliography..........................................................................................................................19

Figure 1 – Routes to show compliance with low-power exclusion level....................................9

Table A.1 – Example values of SAR-based P for some cases described by ICNIRP,
max

IEEE Std C95.1-1999 and IEEE Std C95.1-2005...................................................................13

Table B.1 – Some typical frequency bands of portable wireless devices and
corresponding low-power exclusion levels P ′ predicted using Equations (B.1)
max

through (B.9) ........................................................................................................................16

---------------------- Page: 8 ----------------------
SIST EN 62479:2010
62479 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ASSESMENT OF THE COMPLIANCE OF LOW-POWER
ELECTRONIC AND ELECTRICAL EQUIPMENT
WITH THE BASIC RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS
(10 MHz to 300 GHz)
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 62479 has been prepared by IEC technical committee 106:

Methods for the assessment of electric, magnetic and electromagnetic fields associated with

human exposure.
The text of this standard is based on the following documents:
FDIS Report on voting
106/198/FDIS 106/205/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.

---------------------- Page: 9 ----------------------
SIST EN 62479:2010
– 4 – 62479 © IEC:2010

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.
---------------------- Page: 10 ----------------------
SIST EN 62479:2010
62479 © IEC:2010 – 5 –
ASSESMENT OF THE COMPLIANCE OF LOW-POWER
ELECTRONIC AND ELECTRICAL EQUIPMENT
WITH THE BASIC RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS
(10 MHz to 300 GHz)
1 Scope

This International Standard provides simple conformity assessment methods for low-power

electronic and electrical equipment to an exposure limit relevant to electromagnetic fields

(EMF). If such equipment cannot be shown to comply with the applicable EMF exposure

requirements using the methods included in this standard for EMF assessment, then other

standards, including IEC 62311 or other (EMF) product standards, may be used for conformity

assessment.
2 Normative references

The following referenced documents are indispensable for the application of this document.

For dated references, only the edition cited applies. For undated references, the latest edition

of the referenced document (including any amendments) applies.

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

restrictions for electromagnetic fields (0 Hz – 300 GHz)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
available antenna power

the maximum power, averaged over a time interval equal to the averaging time, supplied to

the antenna feed line that can be theoretically delivered by a source having an impedance of

positive real part to a directly connected load when the impedance of the load is widely varied

NOTE 1 The available antenna power is obtained when the resistance of the load is equal to that of the source

and its reactance is equal in magnitude but of opposite sign. However, other scenarios are possible e.g. if the PA

monitors the current rather than the actual power, a changing antenna impedance (when DUT is operated close to

the body) might actually cause a higher output power than the matched load. Then, a push-pull analysis with varied

realistic loads (according to antenna impedance in the vicinity of the body) should be performed.

NOTE 2 In some cases, conditions such as overheating or overvoltage prevent the available antenna power from

being obtained.

NOTE 3 Time average shall be taken during continuous or maximum duty cycle transmission at maximum power

to the extent possible for a given technology.
NOTE 4 Adapted from IEC 60050-702:1992 [11] , 702-07-10.
NOTE 5 Antenna feed line is defined by IEC 60050-712:1992 [12], 712-06-01.
—————————
Figures in square brackets refer to the Bibliography.
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SIST EN 62479:2010
– 6 – 62479 © IEC:2010
3.2
average total radiated power

the time average of the total radiated power over a time interval equal to the averaging time.

This time average is taken during continuous or maximum duty cycle transmission at

maximum power to the extent possible for a given technology

NOTE If the user is in the reactive near field of the antenna, the presence of the user may result in a change in

the total radiated power due to a change in the antenna impedance. In this case, the average total radiated power

must be the maximum possible power in the presence of the user.
3.3
averaging time
avg

the appropriate time over which exposure is averaged for purposes of determining compliance

with exposure limits
3.4
basic restriction

restriction(s) on exposure to time-varying electric, magnetic, and electromagnetic fields that are based

directly on established health effects

NOTE Depending upon the frequency of the field, the physical quantities used to specify these restrictions are

current density, specific absorption rate (SAR), and power density.
3.5
conformity assessment

demonstration that specified requirements relating to a product, process, system, person or

body are fulfilled

NOTE The subject field of conformity assessment includes activities such as testing, inspection and certification,

as well as the accreditation of conformity assessment bodies.
[ISO 17000:2004 [14], definition 2.1, modified]
3.6
information technology equipment
ITE

any equipment which has a primary function of either (or a combination of) entry, storage,

display, retrieval, transmission, processing, switching, or control, of data and of

telecommunication messages and which may be equipped with one or more terminal ports

typically operated for information transfer

EXAMPLE Types of ITE include data processing equipment, office machines, electronic business equipment and

telecommunication equipment.
3.7
low-power equipment

equipment where the available antenna power and/or the average total radiated power is less

than or equal to the low-power exclusion level
3.8
low-power exclusion level
max

specified condition on device output power, which may also depend on other variables such

as frequency and distance of radiating source from persons, such that the exposure level

produced by the source will not exceed a specific basic restriction. If the device output power

is less than P , then the device is deemed to comply with the basic restrictions
max
---------------------- Page: 12 ----------------------
SIST EN 62479:2010
62479 © IEC:2010 – 7 –
3.9
multimedia equipment
MME

equipment that has the function of information technology equipment (ITE), audio, video or

broadcast-receiving equipment, interaction and/or communication with the user of the product

or combinations of these functions
[CISPR 32____ [9], definition 3.1.17]
3.10
peak radiated power
the maximum instantaneous radiated power
3.11
power density

the power passing through an element of surface normal to the direction of propagation of

energy of an electromagnetic wave divided by the area of the element
[IEC 60050-705:1995 [13], 705-02-03, power flux density]
NOTE Power density is expressed in watts per square meter.
3.12
pulse repetition frequency
PRF
the number of pulses transmitted per unit time
3.13
specific absorption

energy absorbed by (dissipated in) an incremental mass contained in a volume element of

biological tissue when exposure to a radio frequency electromagnetic field occurs

NOTE Specific absorption is expressed in joules per kilogram.
3.14
specific absorption rate
SAR

power absorbed by (dissipated in) an incremental mass contained in a volume element of

biological tissue when exposure to a radio frequency electromagnetic field occurs

NOTE SAR is expressed in watts per kilogram.
3.15
total radiated power

the total power emitted by the equipment in the form of electromagnetic fields in the absence

of any nearby objects (e.g. a human body)

NOTE For transmitters that use antennas, the total radiated power is independent of antenna gain.

3.16
unintentional radiator
non-intentional radiator

electrical or electronic equipment that radiates radio frequency (RF) energy, even though the

emission is not a deliberate or necessary part of its function

EXAMPLE Examples of unintentional radiators include all types of ITE without antenna and/or wireless radio

transmission function.
—————————
In preparation.
---------------------- Page: 13 ----------------------
SIST EN 62479:2010
– 8 – 62479 © IEC:2010
4 Conformity assessment methods
4.1 General considerations

Compliance of electromagnetic emissions from electronic and electrical equipment with the

basic restrictions usually is determined by measurements and, in some cases, calculation of

the exposure level. If the electrical power used by or radiated by the equipment is sufficiently

low, the electromagnetic fields emitted will be incapable of producing exposures that exceed

the basic restrictions. This standard provides simple EMF assessment procedures for this low

power equipment.

Any relevant compliance assessment procedure which is consistent with the state of the art,

reproducible and gives valid results can be used.

For transmitters intended for use with more than one antenna configuration option, the

combination of transmitter and antenna(s) which generates the highest available antenna

power and/or average total radiated power shall be assessed.
and described as follows, can be used to demonstrate
Four routes, as illustrated in Figure 1
compliance with this standard:

A Typical usage, installation and the physical characteristics of equipment make it

inherently compliant with the applicable EMF exposure levels such as those listed in the

bibliography. This low-power equipment includes unintentional (or non-intentional)

radiators, for example incandescent light bulbs and audio/visual (A/V) equipment,

information technology equipment (ITE) and multimedia equipment (MME) that does not

contain radio transmitters.

NOTE Equipment is described as A/V equipment, ITE or MME if its main use is playback/recording of music,

voice or images, or processing of digital information.

B The input power level to electrical or electronic components that are capable of radiating

electromagnetic energy in the relevant frequency range is so low that the available

antenna power and/or the average total radiated power cannot exceed the low-power

exclusion level defined in 4.2.

C The available antenna power and/or the average total radiated power are limited by

product standards for transmitters to levels below the low-power exclusion level defined

in 4.2.

D Measurements or calculations show that the available antenna power and/or the average

total radiated power are below the low-power exclusion level defined in 4.2.

If none of these routes can be used, then the equipment is deemed to be out of the scope of

this standard and EMF assessment for conformity assessment purposes shall be made

according to other standards, such as IEC 62311 or other EMF product standards.
---------------------- Page: 14 ----------------------
SIST EN 62479:2010
62479 © IEC:2010 – 9 –
Start
Determine applicable
low-power exclusion
level (see 4.2)
Choose
compliance
route
C D
A B
Inherently
Input power Allowed Measurement
compliant output power or calculation
Further assessment
Meets
needed. Use EMF
low-power
product standards
exclusion
or IEC 62311
level?
YES
Equipment
complies with EMF
basic restrictions
IEC 1246/10
Figure 1 – Routes to show compliance with low-power exclusion level
4.2 Low-power exclusion level (P )
max

Low-power electronic and electrical equipment is deemed to comply with the provisions of this

standard if it can be demonstrated using routes B, C or D that the available antenna power

and/or the average total radiated power is less than or equal to the applicable low-power

exclusion level P .
max

Annex A contains example values for P derived from existing exposure limits listed in the

max

bibliography, such as the ICNIRP guidelines [1], IEEE Std C95.1-1999 [2], and IEEE Std

C95.1-2005 [3] .

For wireless devices operated close to a person’s body with available antenna powers and/or

average total radiated powers higher than the P values given in Annex A, the alternative

max
P values (called P ′), described in Annex B can also be used.
max max

NOTE In order to be able to use the alternative P values (P ′), the device under assessment shall fit within

max max

the scope of applicability of P ′ as defined in Annex B. If P ′ as defined in Annex B is not applicable to a

max max

particular product, then the example values P for the corresponding exposure limits described in Annex A

max
should be used.

For low power equipment using pulsed signals, other limits may apply in addition to those

considered in Annex A and Annex B. Both ICNIRP guidelines [1] and IEEE standards [2] , [3 ]

have specific restrictions on exposures to pulsed fields, and the requirements of those

standards with respect to exposure to pulses shall be met. Annex C discusses this topic

further.
---------------------- Page: 15 ----------------------
SIST EN 62479:2010
– 10 – 62479 © IEC:2010
4.3 Exposure to multiple transmitting sources

If an equipment under test (EUT) is equipped with multiple intentional radiators, the overall

conformity assessment might require more than just the assessment of conformity of each

one of the radiators separately. The effect of multiple intentional radiators should be

considered in the conformity assessment process.

Technical Report IEC 62630 [8] provides generic guidance on how to assess the EMFs

generated by multiple intentional radiators.
5 EMF assessment report
5.1 General considerations

The means and rationale for determining compliance with the low-power exclusion level shall

be recorded, as shall all information needed for performing repeatable assessments, tests,

calculations, or measurements yielding results within the required calibration and uncertainty

limits.

Further guidelines on the assessment report can be found in 5.10 of ISO/IEC 17025:2005.

Annex D is a sample of what is contained in ISO/IEC 17025 as it might pertain to EMF

assessment reports.
5.2 Equipment-related information

Relevant information concerning the settings of controls and the intended usage of the

equipment shall be recorded. In addition, the following should be included in the assessment

report:
• description of the equipment including type designation, serial number, etc.;

• any instructions needed for a user to properly operate the equipment such that exposures

will be compliant with the basic restrictions;

• provisions for ensuring that the equipment cannot be modified to change its power so that

it could exceed the low-power exclusion level.
6 Use of measurement uncertainty in the evaluation of compliance to limits

The equipment is deemed to fulfil the requirements of this standard if the assessment results

are less than or equal to the limit and if the estimated uncertainty of the assessment results is

less than the maximum measurement uncertainty specified for the assessment method(s) that

are applied. This means that for each assessment route shown in Figure 1, separate

uncertainty estimations must be performed as applicable for the route used. The uncertainty

of the assessment method shall be determined by calculating the expa
...

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