ISO/IEC INTERNATIONAL STANDARD 14417 First edition 1999-03-15 Information technology Data recording format DD-1 for magnetic tape cassette conforming to ISO/IEC 1016 Technologies de I'information Format d'enregistrement des données DD-1 pour cassette a bande magnétique conforme a l'ISO/CEl 1016 IEC Reference number ISO/IEC 14417:1999(E) IHS unde Not for Resale ISO/IEC14417:1999(E) Contents 1 Scope. 1.1 Purpose.. 2Conformanc 2.1 Magnetic tape cassettes. 2.2 Generating systems .. 2.3 Receiving systems. 3 Normative References . 4Definitions. 4.1 Auxiliary data.... 4.2 Annotation record .. 4.3 Annotation tracks .. 4.4 Average Signal Amplitude (ASA). 4.5azimuth 4.6 block. 4.7 byte 4.8 Codeword Digital Sum (CDS), 4.9 Data area 4.10 Data area reference line 4.11 Data area reference point. 4.2 Data field.... 4.13 Digital Sum Variation (DSV), 4.14Dropout 4.15Erase 4.16 Erasing field... 4.17 Equivalent reference edge 4.18 flux transition spacing. 4.19 Helical (data) record 4.20 Helical track. 4.21 Home track ID 4.22Inner code 4.23 Leader 4.24 Logical volume 4.25 magnetic tape ISO/IEC1999 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 a and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office · Case postale 56 · CH-1211 Geneve 20 · Switzerland Printed in Switzerland from IH: Not for Resa @ISO/IEC ISO/IEC14417:1999(E) 4.26 Master Standard Reference Tape. 4.27Outercode 4.28 physical recording density . 4.29Postamble 4.30 Preamble... 4.31 reference edge 4.32 reference field.. 4.33Resolution 4.34 Secondary Standard Reference Tape.. 4.35 Sector... 4.36Sectorrecordingtolerance 4.37 Standard Reference Amplitude. 4.38 Standard Reference Current. 4.39 Sync pattern... 4.40 Tape mark ... 4.41 Tolerance zones 4.42 track. 4.43 track angle. 4.44 Track Set... 4.45 Track SetID (TSID) 4.46Volume set 5 Conventions and notations... 5.1 Representation of numbers 5.2Names 5.3 Acronyms 6 Environmental and safety 6.1 Testing environmen 6.2 Operating environment 6.3 Cassette conditioning 6.4 Storage environment . 6.5 Safety 7 Cassette.. 7.1 General description .. 7.2 Dimensions. 7.3Identificationholes 8 Tape mechanical and electrical properties... .8 8.1 Materials.... .8 8.2Tapewidthandtolerance 8.3Delta width. 8.4 Reference edge straightness .8 8.5 Tape thickness ili Copyright Intern onal Organization for Standardization Not for Resale