SIST EN ISO 25178-71:2014

SLOVENSKI STANDARD
SIST EN ISO 25178-71:2014
01-julij-2014
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Geometrical product specifications (GPS) - Surface texture: Areal - Part 7: Software
measurement standards (ISO 25178-71:2012)
Geometrische Produktspezifikation (GPS) - Oberflächenbeschaffenheit: Flächenhaft -
Teil 7: Software-Normale (ISO 25178-71:2012)
Spécification géométrique des produits (GPS) - État de surface: Surfacique - Partie 7:
Étalons logiciels (ISO 25178-71:2012)
Ta slovenski standard je istoveten z: EN ISO 25178-71:2012
ICS:
17.040.20 Lastnosti površin Properties of surfaces
SIST EN ISO 25178-71:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 25178-71:2014

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SIST EN ISO 25178-71:2014


EUROPEAN STANDARD
EN ISO 25178-71

NORME EUROPÉENNE

EUROPÄISCHE NORM
December 2012
ICS 17.040.20
English Version
Geometrical product specifications (GPS) - Surface texture:
Areal - Part 71: Software measurement standards (ISO 25178-
71:2012)
Spécification géométrique des produits (GPS) - État de Geometrische Produktspezifikation (GPS) -
surface: Surfacique - Partie 71: Étalons logiciels (ISO Oberflächenbeschaffenheit: Flächenhaft - Teil 71: Software-
25178-71:2012) 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 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 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 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 25178-71:2012: E
worldwide for CEN national Members.

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SIST EN ISO 25178-71:2014
EN ISO 25178-71:2012 (E)
Contents Page
Foreword .3

2

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SIST EN ISO 25178-71:2014
EN ISO 25178-71:2012 (E)
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 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 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 rights.
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, France, 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 EN ISO 25178-71:2012 without any
modification.

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SIST EN ISO 25178-71:2014

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SIST EN ISO 25178-71:2014
INTERNATIONAL ISO
STANDARD 25178-71
First edition
2012-12-01
Geometrical product specifications
(GPS) — Surface texture: Areal —
Part 71:
Software measurement standards
Spécification géométrique des produits (GPS) — État de surface:
Surfacique — Partie 71: Étalons logiciels
Reference number
ISO 25178-71:2012(E)
©
ISO 2012

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SIST EN ISO 25178-71:2014
ISO 25178-71:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
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 2012 – All rights reserved

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SIST EN ISO 25178-71:2014
ISO 25178-71:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Type S software measurement standards . 2
4.1 General . 2
4.2 Type S1, reference data . 2
4.3 Type S2, reference software . 3
5 File format for type S1 reference data . 3
5.1 General . 3
5.2 Record 1 — Header . 3
5.3 Record 2 — Data area . 5
5.4 Record 3 — Trailer . 5
6 Software measurement standard certificate . 6
Annex A (informative) Examples . 7
Annex B (informative) Relation to the GPS matrix model .10
Bibliography .12
© ISO 2012 – All rights reserved iii

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SIST EN ISO 25178-71:2014
ISO 25178-71:2012(E)
Foreword
ISO (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
technical 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 with 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 International 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 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 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 standards
— 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-contact (point autofocus probe) instruments
— Part 701: Calibration and measurement standards for contact (stylus) instruments
The following parts are under preparation:
— Part 1: Indication of surface texture
— Part 603: Nominal characteristics of non-contact (phase-shifting interferometric microscopy) instruments
— Part 606: Nominal characteristics of non-contact (focus variation) instruments
iv © ISO 2012 – All rights reserved

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SIST EN ISO 25178-71:2014
ISO 25178-71:2012(E)
Introduction
This part of ISO 25178 is a geometrical product specification (GPS) standard and is to be regarded as a general
GPS standard (see 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
default 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 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 possibilities
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.
© ISO 2012 – All rights reserved v

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SIST EN ISO 25178-71:2014

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SIST EN ISO 25178-71:2014
INTERNATIONAL STANDARD ISO 25178-71:2012(E)
Geometrical product specifications (GPS) — Surface texture:
Areal —
Part 71:
Software measurement standards
1 Scope
This part of ISO 25178 defines Type S1 and Type S2 software measurement standards (etalons) for verifying the
software 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 of ISO 25178, the term “softgauge” is used as a substitute for “software measurement
standard Type S1”.
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 5436-2:2001, Geometrical Product Specifications (GPS) — Surface texture: Profile method; Measurement
standards — Part 2: Software measurement standards
ISO 16610 (all parts), Geometrical Product Specifications (GPS) — Filtration
ISO 17450-2:2012, Geometrical product specifications (GPS) — General concepts — Part 2: Basic tenets,
specifications, operators, uncertainties and ambiguities
ISO 25178-2, Geometrical product specifications (GPS) — Surface texture: Areal — Part 2: Terms, definitions
and surface texture parameters
ISO 25178-3, Geometrical product specifications (GPS) — Surface texture: Areal — Part 3: Specification operators
ISO/IEC Guide 98-1:2009, Uncertainty of measurement — Part 1: Introduction to the expression of uncertainty
in measurement
ISO/IEC Guide 99:2007, International vocabulary of metrology — Basic and general concepts and
associated terms (VIM)
3 Terms and definitions
For 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.
3.1
software measurement standard
reference 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 measurand
3.2
CHAR[n]
array of n ASCII characters
© ISO 2012 – All rights reserved 1

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SIST EN ISO 25178-71:2014
ISO 25178-71:2012(E)
3.3
BYTE
1-byte (8-bit) representation of an ASCII character
3.4
UINT16
2-byte representation of an unsigned integer
NOTE 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; the more significant bytes are stored in
higher memory addresses.
3.5
INT16
2-byte representation of a signed integer
NOTE 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 are stored in
higher memory addresses.
3.6
INT32
4-byte representation of a signed integer
NOTE 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
higher memory addresses.
3.7
DOUBLE
8-byte representation consisting of a sign bit, an 11-bit binary exponent, and a 52-bit mantissa, plus the implied
high-order 1 bit
NOTE 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 memory 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 standards
4.1 General
These measurement standards are designed to verify the measuring instrument’s software (i.e. filter 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 measurement standard prior to presenting it to the software being tested.
4.2 Type S1, reference data
This type of measurement standard is a computer data file that contains a digital representation of a scale
limited surface in a suitable recording medium.
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SIST EN ISO 25178-71:2014
ISO 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 calib
...