IEC TR 61967-1-1:2010

IEC/TR 61967-1-1
®
Edition 1.0 2010-05
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
colour
inside
Integrated circuits – Measurement of electromagnetic emissions –
Part 1-1: General conditions and definitions – Near-field scan data exchange
format

Circuits intégrés – Mesure des émissions électromagnétiques –
Partie 1-1: Conditions générales et définitions – Format d'échange de données
de cartographie en champ proche

IEC/TR 61967-1-1:2010

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IEC/TR 61967-1-1
®
Edition 1.0 2010-05
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
colour
inside
Integrated circuits – Measurement of electromagnetic emissions –
Part 1-1: General conditions and definitions – Near-field scan data exchange
format

Circuits intégrés – Mesure des émissions électromagnétiques –
Partie 1-1: Conditions générales et définitions – Format d'échange de données
de cartographie en champ proche

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 31.200 ISBN 978-2-88910-927-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – TR 61967-1-1 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms, definitions and abbreviations .7
3.1 Terms and definitions .7
3.2 Abbreviations .8
4 General syntax rules and guidelines .8
4.1 General .8
4.2 XML requirements .8
4.2.1 General .8
4.2.2 XML declaration .8
4.2.3 XML elements .8
4.2.4 Root element .9
4.2.5 Comments .9
4.2.6 Line terminations .9
4.2.7 Element hierarchy.9
4.3 Keyword requirements.10
4.3.1 General .10
4.3.2 Keyword characters .10
4.3.3 Keyword syntax .10
4.3.4 Root element keywords .10
4.4 File structure .10
4.4.1 General .10
4.4.2 File names.10
4.4.3 File paths .11
4.4.4 Single XML file .11
4.4.5 Multiple XML files .11
4.4.6 Separate data files .11
4.4.7 Additional files.12
4.4.8 File compression .12
4.5 Values.13
4.5.1 General .13
4.5.2 Numerical value syntax.13
4.5.3 Numerical value with units syntax .13
4.5.4 Text string .13
4.5.5 Valid units .13
4.6 Coordinate systems.15
4.6.1 General .15
4.6.2 Cartesian coordinate system .16
4.6.3 Cylindrical coordinate system .17
4.6.4 Spherical coordinate system.17
4.6.5 Coordinate offsets .18
4.6.6 Image coordinates .18
4.7 Field type and orientation .20
4.8 Data syntax .23

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TR 61967-1-1 © IEC:2010 – 3 –
4.8.1 General .23
4.8.2 Data with coordinate information .23
4.8.3 Data without coordinate information.24
4.8.4 Data format .24
4.8.5 Data notation.24
4.9 Performance factor.27
4.10 Images .29
4.10.1 General .29
4.10.2 Image file types .29
4.10.3 Image file name and path .29
Annex A (informative) Example files.30
Annex B (normative) Valid keywords.38
Annex C (normative) Keyword usage rules.42
Bibliography.51

Figure 1 – Multiple XML files.11
Figure 2 – XML files with data files .12
Figure 3 – Additional files .13
Figure 4 – Right-hand cartesian coordinate system.16
Figure 5 – Left-hand cartesian coordinate system .16
Figure 6 – Cylindrical coordinate system.17
Figure 7 – Spherical coordinate system .18
Figure 8 – Offsets and image positioning (right-hand cartesian).19
Figure 9 – Offsets and image positioning (left-hand cartesian) .19
Figure 10 – Field orientation – Right-hand cartesian coordinate system .20
Figure 11 – Field orientation – Left-hand cartesian coordinate system .21
Figure 12 – Field orientation – Cylindrical coordinate system.21
Figure 13 – Field orientation – Spherical coordinate system .22

Table 1 – Valid logarithmic units .15
Table 2 – Relationship between azimuth, zenith angles and field component .23
Table 3 – Permitted values for the keyword: Coordinates.23
Table 4 – Order of measurement points when coordinates are not included .26
Table 5 – Performance factor linear units.28
Table 6 – Performance factor logarithmic units .28
Table A.1 – Data matrix .34
Table A.2 – Magnetic field strength.36
Table A.3 – Magnetic field strength.37
Table C.1 – File header keywords.42
Table C.2 – Global keywords .43
Table C.3 – Component section keywords .43
Table C.4 – Setup section keywords .44
Table C.5 – Probe section keywords .47
Table C.6 – Data section keywords .48

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INTEGRATED CIRCUITS –
MEASUREMENT OF ELECTROMAGNETIC EMISSIONS –

Part 1-1: General conditions and definitions –
Near-field scan data exchange format


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,
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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.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example “state of the art”.
IEC 61967-1-1, which is a technical report, has been prepared by subcommittee 47A:
Integrated circuits, of IEC technical committee 47: Semiconductor devices.

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TR 61967-1-1 © IEC:2010 – 5 –
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
47A/827A/DTR 47A/833/RVC

Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61967 series under the general title Integrated circuits –
Measurement of electromagnetic emissions can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.

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.

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– 6 – TR 61967-1-1 © IEC:2010
INTRODUCTION
Near-field scan measurements, as described for example in IEC 61967-3, and simulations
generate a large amount of data. Many different formats are used for storing the data, thereby
rendering its exchange extremely difficult.
The proposed format is intended to facilitate exchange of near-field scan data between
industrials, academics, EDA tool vendors and end customers. It is based on the well-known
XML format, which is both machine and human readable. Its structure allows the files to be
generated and processed on any operating system. In order to limit the file size, it is possible
to store the information and data in a single file or multiple files. Moreover, the ASCII-based
XML format allows the files to be compressed to a very high level with readily available
compression software.
The three conventional coordinate systems (cartesian, cylindrical and spherical) are
supported by the proposed exchange format. Information on the device under test, the test
set-up, the probe, etc., is also included in the files. Notes and links to external documents
allow complex test environments to be well described.
The version of the exchange format described in this technical report is 1.0. Future revisions
will add items, such as new keywords and rules, considered to be "enhancements" to Version
1.0. Consequently, all future revisions will be considered supersets of Version 1.0, allowing
backward compatibility.

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TR 61967-1-1 © IEC:2010 – 7 –
INTEGRATED CIRCUITS –
MEASUREMENT OF ELECTROMAGNETIC EMISSIONS –

Part 1-1: General conditions and definitions –
Near-field scan data exchange format



1 Scope
This part of IEC 61967 provides guidance for exchanging data generated by near-field scan
measurements.
The described exchange format could also be used for near-field scan data generated by
simulation software.
It should be noted that, although it has been developed for near-field scan, its use is not
restricted to this application.
The exchange format can be applied to emission, immunity and impulse immunity near-field
scan data in the frequency and time domains.
The scope of this technical report includes neither the methods used for the measurements or
simulations, nor the software and algorithms used for generating the exchange file or for
processing or viewing the data contained therein.
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.
ISO 8879, Information processing – Text and office systems – Standard Generalized Markup
Language (SGML)
ANSI INCITS 4:1986, Information Systems – Coded Character Sets – 7-Bit American National
Standard Code for Information Interchange (7-Bit ASCII)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1.1
section
XML element placed one level below the root element or within another section; contains one
or more XML elements, but no value
3.1.2
parent
keyword, one level above another keyword (child)

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3.1.3
child
keyword, one level below another keyword (parent)
3.2 Abbreviations
EDA Electronic Design Automation
NFS Near-Field Scan
XML eXtensible Markup Language
SGML Standard Generalized Markup Language
4 General syntax rules and guidelines
4.1 General
The following rules and guidelines ensure that files intended for exchange will be correctly
recognised and processed by viewers and processors. Examples of XML files conforming to
the present exchange format are given in An ne x A
4.2 XML requirements
4.2.1 General
This exchange format uses XML 1.0 fourth edition to structure the information. XML is derived
from the standard generalized markup language (SGML) (ISO 8879).
The rules below ensure that the NFS files can be parsed correctly by an XML parser.
4.2.2 XML declaration
Although the XML declaration is optional in an XML file, the near-field scan file should include
an XML declaration, dedicated to basic XML parsers. An NFS file parser does not interpret
this header.
A file header example is given below:


The XML declaration shall be the first line of the file.
4.2.3 XML elements
All information is saved in the form of XML elements. Each element starts with a start-tag and
ends with an end-tag. The start-tag consists of a keyword enclosed in triangular brackets,
“”. The end-tag consists of the same keyword prefixed by the character "/" and
enclosed in brackets, “”. Content in the form of text is enclosed by a start-tag and
an end-tag.
An example of an element is given below:
 
text 
 

It is also allowed to write an element on the same line, for example, to include short content.
text

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TR 61967-1-1 © IEC:2010 – 9 –
The contents of an element may consist of one or more other elements or a value (numerical,
or alphanumerical). For clarity, tab characters may be used for indenting. Except when used
for surrounding keywords, triangular brackets "<" and ">" shall not be part of content.
An empty element may be included to indicate that a particular keyword exists, but has no
content:


4.2.4 Root element
The XML file shall contain one, and only one, root element. It encloses all the other elements
and is therefore the sole parent element to all the other elements. The start-tag of the root
element is placed at the beginning of the file or after the XML declaration when present. The
end-tag of the root element is at the last entry of the file.
4.2.5 Comments
Comments may be inserted into the file between “”. An example is given below:


Comments can be inserted anywhere in the file, except inside start- and end-tags, and written
on a single line or on several lines. All text enclosed by comment brackets is considered as a
comment and may be ignored.
4.2.6 Line terminations
In order to facilitate readability, it is usual to organise the file into lines. The line termination
sequence shall be either a linefeed character or a carriage return character followed by a
linefeed character.
4.2.7 Element hierarchy
The order of the elements is not important, but their hierarchy shall be respected.
example layout:
.

.
.

.

An acceptable equivalent layout of the example:
.
.

.
.

In this layout the order is changed, but the hierarchy is respected.
An unacceptable layout of the example:
.
.

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– 10 – TR 61967-1-1 © IEC:2010
.

.

In this layout the hierarchy is not respected.
4.3 Keyword requirements
4.3.1 General
Keywords, placed in start- and end-tags, are used to introduce descriptions, values and
sections that are specific to NFS measurements and simulations. A list of keywords is given in
Annex B and a more detailed description of each keyword is given in An ne x C. So m e
keywords, such as Frequencies, Unit, List, etc, may be present in several sections. A parent
keyword is required when a child keyword is present. The rules below ensure that the file can
be correctly parsed by an NFS parser.
4.3.2 Keyword characters
Only ASCII charac
...