ISO INTERNATIONAL STANDARD 6487 Sixth edition 2015-08-01 Road vehicles Measurement techniques in impact tests - Instrumentation Vehicules routiers - Techniques de mesurage lors des essais de chocs 一Instrumentation Reference number IS0 6487:2015(E) ISO @IS02015 IS0 6487:2015(E) COPYRIGHT PROTECTED DOCUMENT @ is0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the:requester. iso copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 copyright@iso.org www.iso.org @ IS0 2015 - All rights reserved IS0 6487:2015(E) Contents Page Foreword .iv Introduction. .V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions. .1 4 Performance requirements .3 4.1 CFC specifications and performance requirements .3 4.2 Phase delay time of a data channel .5 4.3 Time. .6 4.3.1 Timebase .6 4.3.2 Relative time delay .6 4.4 Transducer transverse sensitivity ratio of a rectilinear transducer 6 4.5 Calibration .6 4.5.1 General 6 4.5.2 Accuracy of reference equipment for calibration .6 4.5.3 Calibration procedures and uncertainties. .6 4.5.4 Sensitivity coefficient and nonlinearity 7 4.5.5 Calibration of frequency response .8 4.6 Environmental effects .8 4.7 Choice and designation of data channel .8 4.8 Choice of reference coordinate system. 8 4.9 Impactvelocitymeasurement .8 4.10 ATD temperature measurement 8 Annex A (informative) Example of Butterworth four-pole phaseless digital filter (including initial conditions treatment) algorithm 10 Annex B (informative) Recommendations for enabling requirements of this International Standard to be met 14 Annex C (informative) Temperature measurements systems. ..16 Bibliography .17 na adardzaon rights reserved iii

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