Information technology - Automatic identification and data capture techniques - Bar code scanner and decoder performance testing (ISO/IEC 15423:2009)

ISO/IEC 15423:2009 defines the test equipment and procedures to be used to determine the performance of bar code scanning and decoding equipment. It deals with bar code scanning and decoding equipment both as integrated reading systems and as discrete units. It defines performance of the equipment in a particular configuration (e.g. a specific model) irrespective of the individual components used. It also defines in a normative annex operational parameters for the test equipment, and describes, in an informative annex, a means of classifying scanners.

Informationstechnik - Automatische Identifikation und Datenerfassungsverfahren - Leistungsanforderungen an Strichcode-Scanner und -Decoder (ISO/IEC 15423:2009)

Technologies de l'information - Techniques automatiques d'identification et de capture des données - Contrôle de scanner de code à barres et de performance du décodeur (ISO/IEC 15423:2009)

L'ISO/CEI 15423:2009 définit l'équipement et les modes opératoires d'essai à utiliser pour déterminer la performance d'un équipement de balayage et de décodage de codes à barres. Elle s'applique aux équipements de balayage et de décodage de codes à barres, qu'ils se présentent sous forme de systèmes de lecture intégrés ou sous forme d'unités distinctes. Elle définit la performance de l'équipement dans une configuration particulière (par exemple un modèle spécifique) quels que soient les composants individuels utilisés. Elle définit également les paramètres de fonctionnement dans une annexe normative concernant l'équipement d'essai et décrit une méthode de classification des équipements de balayage dans une annexe informative.

Informacijska tehnologija - Tehnike za samodejno razpoznavanje in zajem podatkov - Preskušanje skenerjev in dekodirnikov črtnih kod (ISO/IEC 15423:2009)

Ta mednarodni standard opredeljuje preskusno opremo in postopke za preskušanje opreme za skeniranje in dekodiranje črtnih kod. Obravnava opremo za skeniranje in dekodiranje, integrirano v bralne sisteme, in kot ločene enote. Opredeljuje zmogljivost opreme v določeni konfiguraciji (npr. določen model), ne glede na uporabljene posamične komponente. Prav tako v normativnem dodatku A opredeljuje operativne parametre za opremo za preskušanje ter opisuje sredstva za klasifikacijo skenerjev.

General Information

Status
Published
Publication Date
31-Aug-2010
Technical Committee
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
01-Sep-2010
Completion Date
01-Sep-2010

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SLOVENSKI STANDARD
SIST EN ISO/IEC 15423:2010
01-november-2010
1DGRPHãþD
SIST EN ISO/IEC 15423:2005
,QIRUPDFLMVNDWHKQRORJLMD7HKQLNH]DVDPRGHMQRUD]SR]QDYDQMHLQ]DMHP
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Information technology - Automatic identification and data capture techniques - Bar code

scanner and decoder performance testing (ISO/IEC 15423:2009)
Informationstechnik - Automatische Identifikation und Datenerfassungsverfahren -
Leistungsanforderungen an Strichcode-Scanner und -Decoder (ISO/IEC 15423:2009)

Technologies de l'information - Techniques automatiques d'identification et de capture

des données - Contrôle de scanner de code à barres et de performance du décodeur
(ISO/IEC 15423:2009)
Ta slovenski standard je istoveten z: EN ISO/IEC 15423:2010
ICS:
35.040 Nabori znakov in kodiranje Character sets and
informacij information coding
35.180 Terminalska in druga IT Terminal and other
periferna oprema IT peripheral equipment
SIST EN ISO/IEC 15423:2010 en

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

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SIST EN ISO/IEC 15423:2010
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SIST EN ISO/IEC 15423:2010
EUROPEAN STANDARD
EN ISO 15423
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2010
ICS 35.040 Supersedes EN ISO/IEC 15423:2005
English Version
Information technology - Automatic identification and data
capture techniques - Bar code scanner and decoder
performance testing (ISO/IEC 15423:2009)

Technologies de l'information - Techniques automatiques Informationstechnik - Automatische Identifikation und

d'identification et de capture des données - Contrôle de Datenerfassungsverfahren - Leistungsanforderungen an

scanner de code à barres et de performance du décodeur Strichcode-Scanner und -Decoder (ISO/IEC 15423:2009)

(ISO/IEC 15423:2009)
This European Standard was approved by CEN on 12 August 2010.

CEN 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 CEN Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN Management Centre has the same status as the

official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15423:2010: E

worldwide for CEN national Members.
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SIST EN ISO/IEC 15423:2010
EN ISO/IEC 15423:2010 (E)
Contents Page

Foreword ..............................................................................................................................................................3

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SIST EN ISO/IEC 15423:2010
EN ISO/IEC 15423:2010 (E)
Foreword

The text of ISO/IEC 15423:2009 has been prepared by Technical Committee ISO/IEC/JTC 1 “Information

technology” of the International Organization for Standardization (ISO) and the International Electrotechnical

Commission (IEC) and has been taken over as EN ISO/IEC 15423:2010 by Technical Committee

CEN/TC 225 “AIDC technologies” the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an identical

text or by endorsement, at the latest by March 2011, and conflicting national standards shall be withdrawn at

the latest by March 2011.

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

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

This document supersedes EN ISO/IEC 15423:2005.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
Endorsement notice

The text of ISO/IEC 15423:2009 has been approved by CEN as a EN ISO/IEC 15423:2010 without any

modification.
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SIST EN ISO/IEC 15423:2010
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SIST EN ISO/IEC 15423:2010
INTERNATIONAL ISO/IEC
STANDARD 15423
Second edition
2009-11-15
Information technology — Automatic
identification and data capture
techniques — Bar code scanner and
decoder performance testing
Technologies de l'information — Techniques automatiques
d'identification et de capture des données — Contrôle de scanner de
code à barres et de performance du décodeur
Reference number
ISO/IEC 15423:2009(E)
ISO/IEC 2009
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
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COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2009

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
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ii © ISO/IEC 2009 – All rights reserved
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
Contents Page

Foreword ............................................................................................................................................................iv

Introduction.........................................................................................................................................................v

1 Scope......................................................................................................................................................1

2 Normative references............................................................................................................................1

3 Terms and definitions ...........................................................................................................................2

4 Abbreviated terms .................................................................................................................................5

5 Categories of scanning equipment .....................................................................................................5

5.1 Scanners with single-axis reading diagram .......................................................................................6

5.2 Scanners with two-axis reading diagram............................................................................................6

5.3 Scanners with three-axis reading diagram.........................................................................................6

6 Test requirements .................................................................................................................................6

6.1 Test methods .........................................................................................................................................6

6.2 Selection of equipment for testing ......................................................................................................7

6.3 Test conditions ......................................................................................................................................7

6.4 Test charts .............................................................................................................................................7

6.5 Test equipment ....................................................................................................................................15

6.6 Test criteria ..........................................................................................................................................15

6.7 Parameters to be tested and test methods.......................................................................................16

6.8 Test report............................................................................................................................................26

7 Certification and labelling...................................................................................................................26

8 Equipment specification.....................................................................................................................27

8.1 General .................................................................................................................................................27

8.2 Scanner/decoder interface .................................................................................................................28

8.3 Human interface ..................................................................................................................................28

8.4 Computer interface..............................................................................................................................28

8.5 Digital input and output (I/O)..............................................................................................................29

8.6 Programming and configuration........................................................................................................29

Annex A (normative) General operational requirements..............................................................................30

Annex B (informative) Classification of scanners .........................................................................................31

Annex C (informative) Example of decodability calculation.........................................................................37

Bibliography......................................................................................................................................................39

© ISO/IEC 2009 – All rights reserved iii
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are members of

ISO or IEC participate in the development of International Standards through technical committees

established by the respective organization to deal with particular fields of technical activity. ISO and IEC

technical committees collaborate in fields of mutual interest. Other international organizations, governmental

and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information

technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of the joint technical committee is to prepare International Standards. Draft International

Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as

an International Standard requires approval by at least 75 % of the national bodies casting a vote.

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

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

ISO/IEC 15423 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,

Subcommittee SC 31, Automatic identification and data capture techniques.

This second edition cancels and replaces the first edition (ISO/IEC 15423:2004), which has been technically

revised.
iv © ISO/IEC 2009 – All rights reserved
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
Introduction

The technology of bar coding is based on the recognition of patterns encoded in bars and spaces of defined

dimensions or arrangements of marks in matrix patterns both of which are constructed according to rules

defining the translation of characters into such patterns, known as the symbology specification.

Bar code symbols can be produced with a wide variety of printing and other techniques, and the overall

symbol dimensions can be uniformly scaled to suit particular requirements.

There is a wide range of bar code reading equipment using various scanning techniques, which enable bar

code symbols to be read under many different conditions.
Bar code symbols may be

a) “linear” i.e. read in a single dimension, where the height of the bars provides redundancy of information,

b) “two dimensional”, either in stacked rows to be read unidimensionally with multiple scans, or as a matrix

of elements requiring two dimensional reading.

Bar code reading equipment must be capable of reliably converting the information represented as a bar code

symbol into a form meaningful to the host computer system or otherwise to the user.

Manufacturers of bar code equipment, the producers of bar code symbols and the users of bar code

technology require publicly available standard test specifications for bar code reading equipment to ensure the

accuracy and consistency of performance of this equipment.
© ISO/IEC 2009 – All rights reserved v
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SIST EN ISO/IEC 15423:2010
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SIST EN ISO/IEC 15423:2010
INTERNATIONAL STANDARD ISO/IEC 15423:2009(E)
Information technology — Automatic identification and data
capture techniques — Bar code scanner and decoder
performance testing
1 Scope

This International Standard defines the test equipment and procedures to be used to determine the

performance of bar code scanning and decoding equipment. It deals with bar code scanning and decoding

equipment both as integrated reading systems and as discrete units. It defines performance of the equipment

in a particular configuration (e.g. a specific model) irrespective of the individual components used. It also

defines in a normative annex operational parameters for the test equipment, and describes, in an informative

annex, a means of classifying scanners.
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/IEC 15415, Information technology — Automatic identification and data capture techniques — Bar code

print quality test specification — Two-dimensional symbols

ISO/IEC 15416, Information technology — Automatic identification and data capture techniques — Bar code

print quality test specification — Linear symbols

ISO/IEC 15417, Information technology — Automatic identification and data capture techniques — Code 128

bar code symbology specification

ISO/IEC 15424, Information technology — Automatic identification and data capture techniques — Data

Carrier Identifiers (including Symbology Identifiers)

ISO/IEC 15426-1, Information technology — Automatic identification and data capture techniques — Bar code

verifier conformance specifications — Part 1: Linear symbols

ISO/IEC 15426-2, Information technology — Automatic identification and data capture techniques — Bar code

verifier conformance specification — Part 2: Two-dimensional symbols

ISO/IEC 15438 Information technology — Automatic identification and data capture techniques — PDF417

bar code symbology specification

ISO/IEC 16022 Information technology — Automatic identification and data capture techniques — Data Matrix

bar code symbology specification

ISO/IEC 16388, Information technology — Automatic identification and data capture techniques — Code 39

bar code symbology specification

ISO/IEC 19762-1, Information technology — Automatic identification and data capture (AIDC) techniques —

Harmonized vocabulary — Part 1: General terms relating to AIDC
© ISO/IEC 2009 – All rights reserved 1
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)

ISO/IEC 19762-2, Information technology — Automatic identification and data capture (AIDC) techniques —

Harmonized vocabulary — Part 2: Optically readable media (ORM)

ISO/IEC 24723, Information technology — Automatic identification and data capture techniques — EAN.UCC

Composite bar code symbology specification

ISO/IEC 24724, Information technology — Automatic identification and data capture techniques — Reduced

Space Symbology (RSS) bar code symbology specification
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/IEC 19762 and the following apply.

3.1
contact scanner

particular type of scanner in which the scanning action takes place with the scanner in actual or near contact

with the symbol, e.g. wand or light pen
3.2
decode redundancy

acquisition of a predetermined number of identical decodes before acceptance by a decoder of a valid decode

EXAMPLE Decode redundancy of 2 requires two identical decodes.
3.3
exit window

datum point from which the reading diagram is measured, positioned on the beam midpoint and closest to the

reading end of the scanner
3.4
maximum reading distance
distance from the exit window to the end of the depth of field
NOTE See R in Figure 2.
3.5
minimum reading distance
distance from the exit window to the beginning of the depth of field
NOTE See A in Figure 2.
3.6
raster distance

distance between the two most widely spaced adjacent scan lines projected on a plane at a defined distance

from the scanner exit window
NOTE See E in Figure B.3.
3.7
raster width

distance between the two outermost scan lines projected on a plane at a defined distance from the scanner

exit window

NOTE This covers a reading field which depends on the construction of the scanner and on the reading distance.

See D in Figure B.3.
2 © ISO/IEC 2009 – All rights reserved
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
3.8
reading angle
angular rotation of a symbol in an axis relative to a scan line

NOTE Three different reading angles, tilt, skew and pitch are illustrated in Figure 1. Tilt refers to rotation around the z

axis, skew to rotation around the x axis and pitch to rotation around the y axis.

tilt skew pitch
X Axis
Y Axis
Z Axis
Figure 1 — Reading angles
3.9
reading diagram

graphical representation of the reading zone for a specific X dimension (or other parameters) of the bar code

symbol
NOTE The parameters of the reading diagram are:
⎯ measurements made from the exit window of the reader;
⎯ reading distance, measured on the z axis;
⎯ X dimension (in mm);
⎯ skew, tilt and pitch angles;
⎯ symbol contrast value;
⎯ ambient light level; and
⎯ symbology.
See Annex B.
3.10
reading zone

whole region (line, area or volume) in front of the exit window of a non-contact scanner in which defined

symbols can be read
NOTE See zone MNOP in Figure 2.
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
Two-axis
Scanner
Reading zone
Figure 2 — Example of reading zone (MNOP)

NOTE Certain application requirements, for example in automated conveyor scanning systems, may restrict the

effective reading zone to that shown in Figure 3 (MNO’P’).
Two-axis
Scanner
A B
Restricted reading zone
Figure 3 — Example of restricted reading zone (MNO’P’)
4 © ISO/IEC 2009 – All rights reserved
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
3.11
resolution

width of the narrowest element capable of being read by the scanner equipment under test conditions

3.12
scan, noun

single pass of the scanning beam over the symbol or a portion of the symbol, or a single image capture with

an image capture device
scan, verb

to pass the scanning beam over the symbol or a portion of the symbol, or to capture a single image with an

image capture device
3.13
scan attempt

single pass of the scanner relative to the symbol (or vice versa), or a single activation of the scanner, e.g.

triggering, for a period not exceeding two seconds or a time period specified by the manufacturer

3.14
scanning rate

number of times the bar code symbol is scanned per second, expressed in scans per second, or scan lines

per second
3.15
scanning speed

speed at which the scanning spot of a scanner with a single axis reading diagram is passed across a bar code

symbol
3.16
X axis

direction parallel to the motion of the scan beam, nominally perpendicular to the bars of a linear symbol

3.17
Y axis

direction perpendicular to the motion of the scan beam, nominally parallel to the bars of a linear symbol

3.18
Z axis

direction from the exit window to the symbol, nominally normal to the plane of the symbol

4 Abbreviated terms
CCD Charge Coupled Device
CMOS Complementary Metal Oxide Semiconductor
LED Light Emitting Diode
5 Categories of scanning equipment

In order to enable the most appropriate set of tests for a given scanning device or unit to be selected,

scanners are grouped for the purposes of this International Standard into three categories. The basis for this

categorisation is the nature of the reading diagram applicable. Examples of various types of scanners are

given in Annex B. Each category may be further subdivided into ‘continuously operating’ scanners, in which

the scanning operation is already in progress when the symbol enters the reading zone, and ‘triggered’

scanners, where the symbol is already in the reading zone when the scanning operation is initiated.

© ISO/IEC 2009 – All rights reserved 5
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
5.1 Scanners with single-axis reading diagram

These are defined as scanners with a reading diagram which extends as a single line from the exit window of

the scanner to the maximum reading distance along the z axis. The scanning action therefore has to be

created by moving either the scanner or the symbol relative to the other in a direction nominally perpendicular

to the height of the bars.

The reading diagram for such scanners can be represented as a single line extending outwards from the exit

window of the scanner. See Figure B.1.
5.2 Scanners with two-axis reading diagram

These are defined as scanners with a reading diagram which extends in a single plane from the exit window of

the scanner to the maximum reading distance along the z axis and perpendicularly in both directions along the

x axis. The scanning action is created either by sweeping the scanner beam across the symbol in a direction

nominally perpendicular to the height of the bars, or by electronically sampling in turn individual elements of a

photosensitive array on which an image of the bar code symbol is focussed.

The reading diagram for such scanners can be represented in a two-dimensional form. See Figure B.2.

5.3 Scanners with three-axis reading diagram

These are defined as scanners with a reading diagram which extends from the exit window of the scanner to

the maximum reading distance along the z axis, and perpendicularly to this in both directions along the x and

y axes which are also perpendicular to each other.

The reading diagram for such scanners is the representation of a three-dimensional solid.

5.3.1 Multi-line scanners

The scanning action is created either by sweeping the scanner beam across the symbol in a series of

nominally parallel scans in a direction nominally perpendicular to the height of the bars, see Figure B.3 or in a

pattern of scan lines at various angles, or multi-window scanners, see Figure B.5.

5.3.2 Image scanners

The scanning action is created by electronically sampling in turn individual photosensitive elements of an area

array on which an image of the bar code symbol is focussed; see Figure B.4.
6 Test requirements
6.1 Test methods

Manufacturers’ test procedures should be in accordance with the requirements of ISO 9001.

Tests should wherever possible be carried out on a complete reading system comprising both scanner and

decoder.

Where it is required to report the performance of a scanner or a decoder independently, the unit shall be

tested in conjunction with one or more representative decoder or scanner unit(s) respectively, but only the

parameters relative to scanning or decoding performance, as applicable, shall be reported. The decoder or

scanner units used shall be reported with the test results.

Manufacturers may optionally test scanner or decoder performance independently using the equipment

defined in 6.5.4.1 or 6.5.4.2 but it should be noted that the results may not correspond exactly to those

obtained when tested as a complete system.
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SIST EN ISO/IEC 15423:2010
ISO/IEC 15423:2009(E)
6.2 Selection of equipment for testing

Tests shall be carried out on at least one unit which has been selected from a production batch in accordance

with the manufacturer's quality control sampling scheme.

NOTE It is in the manufacturer's interest to ensure that the unit selected is representative of its type. Guidance on

sampling is given in ISO 2859-1.
6.3 Test conditions
6.3.1 Environment

Tests shall be conducted under manufacturer-specified environmental conditions (power supply, temperature,

relative humidity and ambient light conditions) and the test conditions shall be recorded as part of the test

report.

Test charts to be used shall have been stored under the temperature and humidity conditions specified for a

sufficient time to ensure their dimensional stability during the test period.
6.3.2 Equipment configuration

The following information on the installation of the equipment under test shall be recorded:

⎯ description of configuration, including type/model of scanner and decoder, and other Physical

conditions, e.g. type of interface, etc.;

⎯ logical conditions such as the type of output by the scanner, or sent to the decoder e.g. analogue

waveform, digital output (where a scanner or decoder is being tested rather than a complete reader).

6.4 Test charts

Test charts should be produced on dimensionally stable materials with image characteristics which are

consistent within the image or symbol area used for the test. As an example, Kodak Kodagraph Continuous

Tone White Film (CTW7) is one material that has been found to be suitable when backed with a black opaque

material to minimize the effects of show-through.

When equipment which is unable to process any of the symbologies in the test charts is to be tested, an

equivalent set of test symbols in another appropriate symbology should be used. When other symbologies are

being used, certain parameters may require to be modified to comply with the parameters of the symbology

specification, e.g. row height or wide-to-narrow ratio.
When selecting materials for this use it is important to consider:
⎯ high dimensional stability
⎯ high substrate opacity (minimized show-through)
⎯ high consistency of substrate surface reflectance
⎯ bars (regions of low re
...

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