1、BRITISH STANDARD BS ISO/IEC 15426-1:2006 Information technology Automatic identification and data capture techniques Bar code verifier conformance specification Part 1: Linear symbols ICS 35.040 BS ISO/IEC 15426-1:2006 This British Standard was published under the authority of the Standards Policy a
2、nd Strategy Committee on 30 June 2006 BSI 2006 ISBN 0 580 48742 3 National foreword This 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 It supersedes BS ISO/IEC 15426-1:2000 which is withdrawn.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 entr
3、usted to Technical Committee IST/34, Automatic identification and data capture techniques, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publicat
4、ions 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 Online. This publication does not purport to include all the necess
5、ary 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. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interp
6、retation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO/IEC title page, pages ii to v, a blank page, pages 1 to 10,
7、 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 publication Amd. No. Date Comments Reference number ISO/IEC 15426-1:2006(E)INTERNATIONAL STANDARD ISO/IEC 15426-1 Second edition 2006-06-01
8、 Information technology Automatic identification and data capture techniques Bar code verifier conformance specification Part 1: Linear symbols Technologies de linformation Techniques didentification automatique et de capture de donnes Spcifications de conformit des vrificateurs de codes barres Part
9、ie 1: Symboles linaires BS ISO/IEC 15426-1:2006 ii iii 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.
10、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
11、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 BS ISO/IEC 15426-1:2006
12、iv 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 tec
13、hnical 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 p
14、art 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 Int
15、ernational 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 som
16、e 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 identificati
17、on 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 t
18、echniques Bar code verifier conformance specification: Part 1: Linear symbols Part 2: Two-dimensional symbols BS ISO/IEC 15426-1:2006v 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 definin
19、g 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 de
20、veloped 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 standar
21、d conformance specifications for measuring equipment applying this methodology, to ensure the accuracy and consistency of performance of this equipment. BS ISO/IEC 15426-1:2006blank1 Information technology Automatic identification and data capture techniques Bar code verifier conformance specificati
22、on 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 1
23、5426 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 res
24、ults 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
25、Tolerance R max 5% reflectance R min 3% reflectance 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 applica
26、tion 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
27、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 BS ISO/IEC 15426-1:20062 4 Terms and definitions For the purposes of this document, the
28、 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 t
29、raceable to national standards 5 Symbols and abbreviations R bBar Reflectance, as defined in ISO/IEC 15416 R maxMaximum reflectance, as defined in ISO/IEC 15416 R minMinimum reflectance, as defined in ISO/IEC 15416 R sSpace Reflectance, as defined in ISO/IEC 15416 PCS Print Contrast Signal, as defin
30、ed 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 i
31、nstrument 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 calibra
32、tion 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 reflect
33、ance 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 measurement
34、s; 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); BS ISO/IEC 15426-1:20063 reporting the decoded data; reporting all encoded sym
35、bol 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
36、 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 verifi
37、ed; print-out or display of all or, at the users option, selected scan reflectance profiles; calculation and reporting of Print Contrast Signal (PCS) as (R max- R min ) / R max . NOTE The calculation of Print Contrast Signal is included to assist users following application specifications which defi
38、ne contrast by that method. This parameter correlates less closely than does Symbol Contrast with scanning performance. 7 General constructional and operational requirements 7.1 Installation, operation and maintenance The manufacturer shall specify in documentation provided for or available to the i
39、nstaller, user and maintainer of the equipment the conditions for installation, operation and maintenance of the equipment. These documents 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, oper
40、ated and maintained in accordance with the above conditions, it shall be capable of operating as specified. 7.2 Power supply The manufacturer 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
41、the bar code verifier shall not be adversely affected by fluctuations in supply voltage and frequency within the range specified by the manufacturer. 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
42、 the battery power limit at which the reliable performance of the instrument can no longer be guaranteed. For equipment powered by rechargeable batteries, the manufacturer shall indicate the requirements for recharging the batteries. 7.3 Temperature 7.3.1 Operating temperature range The manufacturer
43、 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 temperature range The manufacturer shall state the range of temperatures in degrees Celsius which the equipment (including removable batteries) shall be capable o
44、f withstanding during storage and transportation, without loss of performance. 7.4 Humidity The manufacturer shall state the range of values 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 imm
45、unity The characteristics of ambient light vary very widely and should be taken into consideration. Some examples of typical light sources 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
46、manufacturer shall state the recommended ambient light conditions under which the equipment is intended to be used. 8 Test requirements 8.1 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 car
47、ried out on at least one verifier which has been selected from a production batch in accordance with the manufacturers own quality control 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 IS
48、O 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 other equipment use parameters shall fall within the range specified by the manufacturer of the equipment. The scanning speed should be constant, or variations sh
49、ould 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 instrument, shall be compared with the actual measurements supplied with the test symbols. Should performan
