ISO INTERNATIONAL STANDARD 14878 First edition 2015-12-15 Cycles Audible warning devices Technical specification and test methods Cycles - Dispositifs avertisseurs sonores - Spécifications techniques etméthodes d'essai Reference number ISO 14878:2015(E) ISO @IS02015 IS0 14878:2015(E) COPYRIGHT PROTECTED DOCUMENT @ ISQ 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 14878:2015(E) Contents Page Foreword ..iv 1 Scope 2 Normative references ..1 3 Terms and definitions ..1 4 Symbols and abbreviated terms .2 5 Instrumentations. .2 5.1 Instruments for acoustical measurement 2 5.1.1 General .2 5.1.2 Calibration... .2 5.1.3 Compliance with requirements .2 5.1.4 Meteorological Instrumentation .2 6 Acoustical environment, meteorological conditions, and background noise .3 6.1 Test site .3 6.2 Meteorological conditions .3 6.3 Background noise. .3 6.4 Mounting of the AWD ..4 6.5 Microphone and AWD positions 4 7 Measurement of the sound pressure level .4 7.1 Actuation of the AWD ..4 7.2 Measurement readings and reported values 4 7.2.1 General. .4 7.2.2 Data compilation 4 7.3 Required sound pressure .5 7.4 Low battery indicator. .5 8 Test of durability .5 8.1 Test procedure .5 8.1.1 Stability mechanical test ..5 8.1.2 Corrosion test. .6 8.2 Test result. .6 9 Test report. 10 Marking son to? Standardizann rights reserved iii