ISO/IEC 15426-1:2006
(Main)Information technology — Automatic identification and data capture techniques — Bar code verifier conformance specification — Part 1: Linear symbols
Information technology — Automatic identification and data capture techniques — Bar code verifier conformance specification — Part 1: Linear symbols
The technology of bar coding is based on the recognition of patterns encoded in dark and light elements of defined dimensions according to rules defining the translation of characters into such patterns, known as the symbology specification. The bar code symbol, as a machine-readable data carrier, must be produced in such a way as to be reliably decoded at the point of use, if it is to fulfil its basic objective. Standard methodologies have been developed for measuring and assessing the quality of symbols for process control and quality assurance purposes during symbol production as well as afterwards. Manufacturers of bar code equipment, the producers of bar code symbols and the users of bar code technology require publicly available standard conformance specifications for measuring equipment applying this methodology, to ensure the accuracy and consistency of performance of this equipment. ISO/IEC 15426-1:2006 defines test methods and minimum accuracy criteria for verifiers using the methodology of ISO/IEC 15416 for linear bar code symbols, and specifies reference calibration standards against which these should be tested. ISO/IEC 15426-1:2006 provides for testing of representative samples of the equipment.
Technologies de l'information — Techniques automatiques d'identification et de capture des données — Spécifications de conformité des vérificateurs de codes à barres — Partie 1: Symboles linéaires
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 15426-1
Second edition
2006-06-01
Information technology — Automatic
identification and data capture
techniques — Bar code verifier
conformance specification —
Part 1:
Linear symbols
Technologies de l'information — Techniques d'identification
automatique et de capture de données — Spécifications de conformité
des vérificateurs de codes à barres —
Partie 1: Symboles linéaires
Reference number
ISO/IEC 15426-1:2006(E)
©
ISO/IEC 2006
---------------------- Page: 1 ----------------------
ISO/IEC 15426-1:2006(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO/IEC 2006
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.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO/IEC 2006 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/IEC 15426-1:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Conformance. 1
3 Normative references . 1
4 Terms and definitions. 2
5 Symbols and abbreviations . 2
6 Functional requirements. 2
6.1 General requirements. 2
6.2 Reflectance calibration. 2
6.3 Mandatory functions. 2
6.4 Optional functions . 3
7 General constructional and operational requirements. 3
7.1 Installation, operation and maintenance. 3
7.2 Power supply. 3
7.3 Temperature . 3
7.4 Humidity. 4
7.5 Ambient light immunity. 4
8 Test requirements. 4
8.1 Test methods. 4
8.2 Test environment. 5
8.3 Primary reference test symbols . 5
8.4 Test report . 5
9 Certification and labelling. 6
10 Equipment specification . 6
Annex A (normative) Primary reference test symbols . 7
Annex B (normative) Verification requirements for primary reference test symbols. 9
Bibliography . 10
© ISO/IEC 2006 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/IEC 15426-1:2006(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 15426-1 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 15426-1:2000), Clause 2 of which has
been technically revised.
ISO/IEC 15426 consists of the following parts, under the general title Information technology — Automatic
identification and data capture techniques — Bar code verifier conformance specification:
— Part 1: Linear symbols
— Part 2: Two-dimensional symbols
iv © ISO/IEC 2006 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/IEC 15426-1:2006(E)
Introduction
The technology of bar coding is based on the recognition of patterns encoded in dark and light elements of
defined dimensions according to rules defining the translation of characters into such patterns, known as the
symbology specification.
The bar code symbol, as a machine-readable data carrier, must be produced in such a way as to be reliably
decoded at the point of use, if it is to fulfil its basic objective. Standard methodologies have been developed
for measuring and assessing the quality of symbols for process control and quality assurance purposes during
symbol production as well as afterwards.
Manufacturers of bar code equipment, the producers of bar code symbols and the users of bar code
technology require publicly available standard conformance specifications for measuring equipment applying
this methodology, to ensure the accuracy and consistency of performance of this equipment.
© ISO/IEC 2006 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO/IEC 15426-1:2006(E)
Information technology — Automatic identification and data
capture techniques — Bar code verifier conformance
specification —
Part 1:
Linear symbols
1 Scope
This part of ISO/IEC 15426 defines test methods and minimum accuracy criteria for verifiers using the
methodology of ISO/IEC 15416 for linear bar code symbols, and specifies reference calibration standards
against which these should be tested. This part of ISO/IEC 15426 provides for testing of representative
samples of the equipment.
NOTE ISO/IEC 15426-2 applies to verifiers for two dimensional bar code symbols.
2 Conformance
The instrument shall be considered to conform with this part of ISO/IEC 15426 if it performs the functions
defined in 6.3 and if the results of measurements of primary reference test symbols carried out in accordance
with Clause 8 demonstrate that the arithmetic means of the ten measurements of individual reported
parameters are within the tolerances shown in Table 1 below.
Table 1 — Tolerances for measured parameter values
Parameter Tolerance
R ± 5% reflectance
max
R ± 3% reflectance
min
Decodability ± 0,08
Defects ± 0,08
NOTE The tolerances in Table 1 are additional to any tolerances stated by the supplier of the primary reference test
symbols.
3 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 9001, Quality management systems — Requirements
ISO/IEC 15416, Information technology — Automatic identification and data capture techniques — Bar code
print quality test specification — Linear symbols
ISO/IEC 19762 (all parts), Information technology — Automatic identification and data capture (AIDC)
techniques — Harmonized vocabulary
© ISO/IEC 2006 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO/IEC 15426-1:2006(E)
4 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 19762 and the following apply.
4.1
primary reference test symbol
bar code symbol intended for the testing of the accuracy of bar code verifiers and manufactured to close
tolerances, of at least ten times the precision of the verifier to be tested, by methods traceable to national
standards
5 Symbols and abbreviations
R Bar Reflectance, as defined in ISO/IEC 15416
b
R Maximum reflectance, as defined in ISO/IEC 15416
max
R Minimum reflectance, as defined in ISO/IEC 15416
min
R Space Reflectance, as defined in ISO/IEC 15416
s
PCS Print Contrast Signal, as defined in ISO/IEC 19762
6 Functional requirements
6.1 General requirements
The general requirement of a bar code verifier is that it shall provide assessments of the quality of a bar code
symbol which are accurate and consistent, both in relation to measurements of a specific symbol made with
the same instrument over a period of time and in relation to measurements of a specific symbol made by
different instruments. Such consistency is essential to enable valid comparisons to be made of assessments
of a symbol verified at two different times or on two different instruments.
6.2 Reflectance calibration
Verifiers shall have means of calibration and adjustment where necessary of reflectance values against
reference reflectance calibration samples. ISO/IEC 15416 provides for the use of two calibration points, one
as near the high reflectance end of the range and the other as near the low reflectance end of the range as
possible.
6.3 Mandatory functions
A bar code verifier, in accordance with ISO/IEC 15416, shall be capable of:
⎯ collecting reflectance measurements from points along one or more scan paths across a bar code
symbol;
⎯ establishing a scan reflectance profile from these measurements;
⎯ analysing the scan reflectance profile;
⎯ reporting individual scan reflectance profile parameter grades;
⎯ determining and reporting an overall symbol grade (including aperture diameter and peak wavelength of
light used);
2 © ISO/IEC 2006 – All rights reserved
---------------------- Page: 7 ----------------------
ISO/IEC 15426-1:2006(E)
⎯ reporting the decoded data;
⎯ reporting all encoded symbol characters.
The method of reporting is not specified but may be by means of, for example, a display screen in the
instrument, a printed report, or electronic communication with another device such as a computer.
6.4 Optional functions
Users of verifiers have differing requirements for the amount of detail reported by the instrument, and a verifier
may therefore perform additional functions, for example:
⎯ reporting of number of scan reflectance profiles on which the overall symbol grade is based;
⎯ reporting of average and maximum and minimum bar width deviations;
⎯ reporting of symbology verified;
⎯ print-out or display of all or, at the user’s option, selected scan reflectance profiles;
⎯ calculation and reporting of Print Contrast Signal (PCS) as
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.