ISO INTERNATIONAL STANDARD 9241-304 First edition 2008-11-15 Ergonomics of human-system interaction - Part 304: User performance test methods for electronic visual displays Ergonomie de Il'interaction homme-systeme Partie 304: Methodes d'essai de la performance de I'utilisateur pour écrans de visualisation électroniques Reference number ISO 9241-304:2008(E) @ ISO 2008 y IHS under ted without license from IHS Not for Resale ISO 9241-304:2008(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 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 COPYRIGHTPROTECTEDDOCUMENT @ ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, 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 @ Iso 2008 - All rights reserved I without license from IHS Not for Resale ISO 9241-304:2008(E) Contents Page Foreword Introduction 1 Scope 2 Normative references. 3 Terms and definitions 4 Guiding principles 5 Conformance 6 Specifyingthevisualergonomicstestobjectives. 6.1 General .... 6.2 Criterion description . 6.3 Measuring method... 6.4 Performance criteria... 7 Defining the test procedure 7.1 General 7.2 Alphanumeric and non-alphanumeric text 8 Visual performance and comfort test - Carrying out the test and analysing the data. 8.1 General. 8.2 Purpose 8.3 Overview. 8.4 Test participants .6 8.5 The displays 8.6 Test setup. .6 8.7 Dependent measures, 8.8 Statistical treatment of results... 12 8.9 Critical values for Barnard's U test 1:4 Annex A (informative) Overview of the ISo 9241 series .. 16 Bibliography. 20 Copyright International Organization for Standardizalon ghts reserved ii Not for Resale