1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 25178-71:2012Geometrical product specifications (GPS) Surface texture: ArealPart 71: Software measurement standardsBS EN ISO 25178-71:2012 BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of EN ISO 25178-71:2012.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e T D W / 4 , T e c h n i c a l P r o d u c t R e a l i z a t i o n .A list of organizations represented on this committee can be obta
3、ined on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 66365 9 ICS 17.040.20 Compliance
4、 with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2012.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCH
5、E NORM EN ISO 25178-71 December 2012 ICS 17.040.20 English Version Geometrical product specifications (GPS) - Surface texture: Areal - Part 71: Software measurement standards (ISO 25178-71:2012) Spcification gomtrique des produits (GPS) - tat de surface: Surfacique - Partie 71: talons logiciels (ISO
6、 25178-71:2012) Geometrische Produktspezifikation (GPS) - Oberflchenbeschaffenheit: Flchenhaft - Teil 71: Software-Normale (ISO 25178-71:2012) This European Standard was approved by CEN on 10 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
7、 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-CENELEC Management Centre or to any CEN member. This European Standard
8、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-CENELEC Management Centre has the same status as the official versions. CEN members are the national
9、 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
10、a, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worl
11、dwide for CEN national Members. Ref. No. EN ISO 25178-71:2012: EBS EN ISO 25178-71:2012 EN ISO 25178-71:2012 (E) 3 Foreword This document (EN ISO 25178-71:2012) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration
12、with Technical Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the secretariat of which is held by AFNOR. 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
13、June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. 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 r
14、ights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Fran
15、ce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 25178-71:2012 has been approved by CEN as a E
16、N ISO 25178-71:2012 without any modification. BS EN ISO 25178-71:2012ISO 25178-71:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Type S software measurement standards 24.1 General . 24.2 Type S1, reference
17、 data . 24.3 Type S2, reference software . 35 File format for type S1 reference data . 35.1 General . 35.2 Record 1 Header . 35.3 Record 2 Data area . 55.4 Record 3 Trailer . 56 Software measurement standard certificate 6Annex A (informative) Examples 7Annex B (informative) Relation to the GPS matri
18、x model 10Bibliography .12BS EN ISO 25178-71:2012ISO 25178-71:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technica
19、l committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wit
20、h the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft Interna
21、tional Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be
22、 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 25178-71 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product specifications and verification.ISO 25178 consists of the following parts, under the general
23、 title Geometrical product specifications (GPS) Surface texture: Areal: Part 2: Terms, definitions and surface texture parameters Part 3: Specification operators Part 6: Classification of methods for measuring surface texture Part 70: Physical measurement standards Part 71: Software measurement stan
24、dards Part 601: Nominal characteristics of contact (stylus) instruments Part 602: Nominal characteristics of non-contact (confocal chromatic probe) instruments Part 604: Nominal characteristics of non-contact (coherence scanning interferometry) instruments Part 605: Nominal characteristics of non-co
25、ntact (point autofocus probe) instruments Part 701: Calibration and measurement standards for contact (stylus) instrumentsThe following parts are under preparation: Part 1: Indication of surface texture Part 603: Nominal characteristics of non-contact (phase-shifting interferometric microscopy) inst
26、ruments Part 606: Nominal characteristics of non-contact (focus variation) instrumentsiv ISO 2012 All rights reservedBS EN ISO 25178-71:2012ISO 25178-71:2012(E)IntroductionThis part of ISO 25178 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (se
27、e ISO/TR 14638). It influences the chain link 6 of the chains of standards on surface texture.The ISO/GPS Masterplan given in ISO/TR 14638 gives an overview of the ISO/GPS system of which this document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and the defau
28、lt decision rules given in ISO 14253-1 apply to specifications made in accordance with this document, unless otherwise indicated.For more detailed information of the relation of this standard to the GPS matrix model, see Annex B.This part of ISO 25178 is concerned with software gauges (Type S1) and
29、reference software (Type S2). It also defines the SDF file format for type S1 software gauges.The SURFACE DATA FILE (SDF) format is already used by industry in particular by instrument manufacturers and academia. The SDF file format as defined in this document is a standardized sub-set of the possib
30、ilities included in the SDF file format as initially defined in the European Surfstand project and EUR15178. It is envisaged that the SDF file format could evolve (as more experience in its usage and future requirements are identified) later in a version 2.0 with additional fields and possibilities.
31、 ISO 2012 All rights reserved vBS EN ISO 25178-71:2012BS EN ISO 25178-71:2012Geometrical product specifications (GPS) Surface texture: Areal Part 71: Software measurement standards1 ScopeThis part of ISO 25178 defines Type S1 and Type S2 software measurement standards (etalons) for verifying the sof
32、tware of measuring instruments. It also defines the file format of Type S1 software measurement standards for the calibration of instruments for the measurement of surface texture by the areal method as defined in the areal surface texture chain of standards, chain link 6.NOTE Throughout this part o
33、f ISO 25178, the term “softgauge” is used as a substitute for “software measurement standard Type S1”.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the lat
34、est edition of the referenced document (including any amendments) applies.ISO 5436-2:2001, Geometrical Product Specifications (GPS) Surface texture: Profile method; Measurement standards Part 2: Software measurement standardsISO 16610 (all parts), Geometrical Product Specifications (GPS) FiltrationI
35、SO 17450-2:2012, Geometrical product specifications (GPS) General concepts Part 2: Basic tenets, specifications, operators, uncertainties and ambiguitiesISO 25178-2, Geometrical product specifications (GPS) Surface texture: Areal Part 2: Terms, definitions and surface texture parametersISO 25178-3,
36、Geometrical product specifications (GPS) Surface texture: Areal Part 3: Specification operatorsISO/IEC Guide 98-1:2009, Uncertainty of measurement Part 1: Introduction to the expression of uncertainty in measurementISO/IEC Guide 99:2007, International vocabulary of metrology Basic and general concep
37、ts and associated terms (VIM)3 Terms and definitionsFor the purpose of this document, the terms and definitions in ISO 25178-2, ISO 25178-3, ISO 5436-2:2001, the ISO 16610 series, ISO 17250-2, ISO/IEC Guide 98-1 and ISO/IEC Guide 99, and the following apply.3.1software measurement standardreference
38、data or reference software intended to reproduce the value of a measurand with known specification uncertainty in order to verify the software used to calculate the value of a measurand3.2CHARnarray of n ASCII charactersINTERNATIONAL STANDARD ISO 25178-71:2012(E) ISO 2012 All rights reserved 1BS EN
39、ISO 25178-71:2012ISO 25178-71:2012(E)3.3BYTE1-byte (8-bit) representation of an ASCII character3.4UINT162-byte representation of an unsigned integerNOTE 1 Unsigned integers have a minimum value of 0 and a maximum value of 65 535.NOTE 2 The less significant bytes are stored in lower memory addresses;
40、 the more significant bytes are stored in higher memory addresses.3.5INT162-byte representation of a signed integerNOTE 1 Short integers have a minimum value of 32 768 and a maximum value of +32 767.NOTE 2 The less significant bytes are stored in lower memory addresses; the more significant bytes ar
41、e stored in higher memory addresses.3.6INT324-byte representation of a signed integerNOTE 1 Long integers have a minimum value of 2 147 483 648 and a maximum value of +2 147 483 647.NOTE 2 The less significant bytes are stored in lower memory addresses; the more significant bytes are stored in highe
42、r memory addresses.3.7DOUBLE8-byte representation consisting of a sign bit, an 11-bit binary exponent, and a 52-bit mantissa, plus the implied high-order 1 bitNOTE 1 Double precision float have an approximate range of 2,22e-1022 to 2,22e+1023.NOTE 2 The less significant bytes are stored in lower mem
43、ory addresses; the more significant bytes are stored in higher memory addresses.NOTE 3 See the IEEE 754-1985 Standard for binary floating-point arithmetic.4 Type S software measurement standards4.1 GeneralThese measurement standards are designed to verify the measuring instruments software (i.e. fil
44、ter algorithms, parameter calculation, etc.).The content of a measurement standard shall be considered a scale limited surface (i.e. an S-F surface or an S-L surface). No part of the content of a measurement standard shall be considered form and thus, no form removal shall be undertaken on a measure
45、ment standard prior to presenting it to the software being tested.4.2 Type S1, reference dataThis type of measurement standard is a computer data file that contains a digital representation of a scale limited surface in a suitable recording medium.2 ISO 2012 All rights reservedBS EN ISO 25178-71:201
46、2ISO 25178-71:2012(E)Type S1 reference data are used to test software by inputting them as data into the software under test/calibration and comparing the results from the software under test with the certified results from the calibration certificate of the softgauge.NOTE The certified results for
47、mathematically designed synthetic data can often be calculated directly without the need for certification by Type S2 measurement standards.4.3 Type S2, reference softwareThese measurement standards are reference software. Reference software consists of traceable computer software against which soft
48、ware in a measuring instrument can be compared.NOTE 1 Traceable here means a traceable chain of comparisons, with uncertainty, back to a mathematically designed synthetic data whose results can be calculated directly.Type S2 reference software are used to test software by inputting a common data set
49、 into the software under test/calibration and the reference software and comparing the results from the software under test with the certified results from the reference software. Reference software values shall be traceable.NOTE 2 Type S2 measurement standards can also be used to certify type S1 reference data.5 File format for type S1 reference data5.1 GeneralThe file extension of this file protocol is SDF. The file protocol for the softgauge is divided into three separate sections or records. For im
