1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58identification and data capture techniques Bar code verifier conformance specification Part 1: Line
2、ar symbols ICS 35.040Information technology Automatic BRITISH STANDARDBS ISO/IEC 15426-1:2006BS ISO/IEC 15426-1:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2006 BSI 2006ISBN 0 580 48742 3request to its secretary.Cross-referenc
3、esThe British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Onlin
4、e.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside
5、front cover, the ISO/IEC title page, pages ii to v, a blank page, pages 1 to 10, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsA list of organizations repr
6、esented on this committee can be obtained on present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.National forewo
7、rdThis British Standard reproduces verbatim ISO/IEC 15426-1:2006 and implements it as the UK national standard. It supersedes BS ISO/IEC 15426-1:2000 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee IST/34, Automatic identification and data capture tech
8、niques, which has the responsibility to: aid enquirers to understand the text;Reference numberISO/IEC 15426-1:2006(E)INTERNATIONAL STANDARD ISO/IEC15426-1Second edition2006-06-01Information technology Automatic identification and data capture techniques Bar code verifier conformance specification Pa
9、rt 1: Linear symbols Technologies de linformation Techniques didentification automatique et de capture de donnes Spcifications de conformit des vrificateurs de codes barres Partie 1: Symboles linaires BS ISO/IEC 15426-1:2006ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Conformance. 1
10、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,
11、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
12、 A (normative) Primary reference test symbols . 7 Annex B (normative) Verification requirements for primary reference test symbols. 9 Bibliography . 10 BS ISO/IEC 15426-1:2006iv Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)
13、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 IE
14、C 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 JT
15、C 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 bodie
16、s 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 identif
17、ying 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 o
18、f 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 BS ISO/IEC 1542
19、6-1:2006vIntroduction 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-re
20、adable 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 pr
21、oduction 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 perf
22、ormance of this equipment. BS ISO/IEC 15426-1:2006blank1Information 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 u
23、sing 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 dimensi
24、onal 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
25、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 Rmax 5% reflectance Rmin 3% reflectance Decodability 0,08 Defects 0,08 NOTE The tolerances in Table 1 are additional
26、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 re
27、ferenced 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 technolog
28、y Automatic identification and data capture (AIDC) techniques Harmonized vocabulary BS ISO/IEC 15426-1:20062 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
29、 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 RbBar Reflectance, as defined in ISO/IEC 15416 RmaxMaximum reflectance
30、, as defined in ISO/IEC 15416 RminMinimum reflectance, as defined in ISO/IEC 15416 RsSpace Reflectance, as defined in ISO/IEC 15416 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 shal
31、l 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
32、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 cal
33、ibration 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
34、: 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
35、an overall symbol grade (including aperture diameter and peak wavelength of light used); BS ISO/IEC 15426-1:20063 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 p
36、rinted 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
37、 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 users option, selected scan reflectance profiles; calculation and reporting of Print Contr
38、ast Signal (PCS) as (Rmax- Rmin) / Rmax. NOTE The calculation of Print Contrast Signal is included to assist users following application specifications which define contrast by that method. This parameter correlates less closely than does Symbol Contrast with scanning performance. 7 General construc
39、tional and operational requirements 7.1 Installation, operation and maintenance The manufacturer shall specify in documentation provided for or available to the installer, user and maintainer of the equipment the conditions for installation, operation and maintenance of the equipment. These document
40、s shall indicate the recommended extent and frequency of maintenance, if any. When equipment which is the subject of this part of ISO/IEC 15426 is installed, operated and maintained in accordance with the above conditions, it shall be capable of operating as specified. 7.2 Power supply The manufactu
41、rer shall indicate the minimum and maximum parameters of the power supply at which the device is able to operate according to its specifications. The accuracy of the bar code verifier shall not be adversely affected by fluctuations in supply voltage and frequency within the range specified by the ma
42、nufacturer. In the case of battery-powered equipment, the instrument shall either give a warning signal to the operator or shall cease to operate when approaching the battery power limit at which the reliable performance of the instrument can no longer be guaranteed. For equipment powered by recharg
43、eable batteries, the manufacturer shall indicate the requirements for recharging the batteries. 7.3 Temperature 7.3.1 Operating temperature range The manufacturer shall state the range of temperatures in degrees Celsius within which the equipment will operate. BS ISO/IEC 15426-1:20064 7.3.2 Storage
44、temperature range The manufacturer shall state the range of temperatures in degrees Celsius which the equipment (including removable batteries) shall be capable of withstanding during storage and transportation, without loss of performance. 7.4 Humidity The manufacturer shall state the range of valu
45、es of relative humidity (RH) of the air within which the equipment will operate and whether the environment is condensing or non-condensing. 7.5 Ambient light immunity The characteristics of ambient light vary very widely and should be taken into consideration. Some examples of typical light sources
46、 which may be the cause of problems are high-efficiency fluorescent lighting, sodium vapour lamps, mercury vapour lamps, red neon lights and direct sunlight. The manufacturer shall state the recommended ambient light conditions under which the equipment is intended to be used. 8 Test requirements 8.
47、1 Test methods Manufacturers test procedures shall be in accordance with the requirements of ISO 9001. 8.1.1 Selection of equipment for testing Tests shall be carried out on at least one verifier which has been selected from a production batch in accordance with the manufacturers own quality control
48、 sampling scheme. NOTE It is in the manufacturers own interest to ensure that the unit selected is representative of its type. Guidance on sampling is given in ISO 2859-1. 8.1.2 Scanning parameters Scanning speeds during the tests (i.e. the speed at which the aperture traverses the test symbol) and
49、other equipment use parameters shall fall within the range specified by the manufacturer of the equipment. The scanning speed should be constant, or variations should be capable of being compensated for in the equipment. 8.1.3 Test measurements A series of ten consecutive scans shall be carried out across each test symbol in the set to be used. The overall symbol grade, and the values for the individually measured parameters of these scans where reported by the i
