ISO INTERNATIONAL STANDARD 22090-1 Secondedition 2014-03-01 Ships and marine technology Transmitting heading devices (THDs) 一 Part 1: Gyro-compasses Navires et technologie maritime - Dispositifs de pilotage a transmission dedonnées- Partie 1: Compas gyroscopiques Reference number ISO 22090-1:2014(E) LSO IS02014 IHS under I ed without license from IHS Not for Resale IS0 22090-1:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 22090-1:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Performance requirements 4.1 Functionality. ..4 4.2 Continuous operation 4.3 Information 4 4.4 Fore and aft mark. 4.5 Speed error correction 4 4.6 Heading information. ..5 4.7 Status indication. .5 4.8 Alert signal 5 4.9 Interface. .5 5 Accuracy .5 5.1 General. .5 5.2 Accuracy of transmission data .5 5.3 Accuracy under static condition .6 5.4 Accuracy under dynamic condition 6 Type tests. 6.1 General .6 6.2 Settling time test. 6.3 Static error (settle point error) test 7 6.4 Settle point heading repeatability test. 6.5 Settling time on a Scorsby table .7 6.6 Scorsbytest. .8 6.7 Intercardinal motion test .8 6.8 Follow-up error test. 8 6.9 Speed error correction test ..8 6.10 General requirement test 9 6.11 Electromagnetic compatibility test ..10 6.12 Interfacetest .10 7 Marking and identification. ..11 Annex A (informative) Equivalent requirements in Is0 22090-1 and IM0 Resolution ..12 Bibliography .13 iii ed without license from IHS Not for Resale