ANSI-ISO-IEC-12248-1993-R2003.pdf
《ANSI-ISO-IEC-12248-1993-R2003.pdf》由会员分享,可在线阅读,更多相关《ANSI-ISO-IEC-12248-1993-R2003.pdf(137页珍藏版)》请在三一文库上搜索。
1、INTERNATIONAL STANDARD ISOJIEC 12248 First edition 1993-12-15 Information technology - 3,81 mm wide magnetic tape cartridge for information interchange - Helical scan recording - DATA/DAT-DC format using 60 m and 90 m length tapes Technologies de /information - Cartouche de bande magnetique de 3,81
2、mm de large pour Mchange dinformation - Enregistrement par balayage en spirale - Format DATNDAT-DC utilisant des bandes de 60 m et 90 m de long Reference number ISO/IEC 12248:1993(E) Processed and adopted by ASC NCITS and approved by ANSI as an American National Standard. Date of ANSI Approval: 5/12
3、/98 Published by American National Standards Institute, 11 West 42nd Street, New York, New York 10036 Copyright 1999 by Information Technology Industry Council (ITI). All rights reserved. These materials are subject to copyright claims of International Standardization Organization (ISO), Internation
4、al Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of ITI. All
5、 requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard.Adopted by INCITS (InterNational Commi
6、ttee for Information Technology Standards) as an American National Standard. Date of ANSI Approval: 5/12/98 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyright 2002 by Information Technology Industry Council (ITI). All rights reserved. These ma
7、terials are subject to copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not for resale. No part of this publication may be reproduced
8、 in any form, including an electronic retrieval system, without the prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of America Copyright American National Standards Institute
9、Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:02:33 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 12248:1993 (E) Contents 1 Scope 2 Conformance 2.1 Magnetic tape cartridge 2.2 Generat
10、ing system 2.3 Receiving system 3 Normative references 4 Definitions 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 Absolute Frame Number (AFN) algorithm Area ID Automatic Track Finding (ATF) Average Signal Amplitude azimuth back surface byte car
11、tridge Channel Bit Codeword Data Format ID End of Data (EOD) End of Information (EOI) End of Partition (EOP) entity Error Correcting Code (ECC) flux transition position flux transition spacing frame group Logical Beginning of Tape (LBOT) Page 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
12、 (D ISO/IEC 1993 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 and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office ? Case p
13、ostale 56 ? CH-1211 Gerkve 20 ? Switzerland Printed in Switzerland ii Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:02:33 MDTNo reproduction or networking permitted withou
14、t license from IHS -,-,- ISO/IEC 12248: 1993 (E) 4.23 4.24 4.25 4.26 4.27 4.28 4.29 4.30 4.31 4.32 4.33 4.34 4.35 4.36 4.37 4.38 4.39 4.40 4.41 4.42 4.43 4.44 4.45 4.46 Logical End of Tape (LEOT) magnetic tape master reference Master Standard Amplitude Calibration Tape Master Standard Reference Tape
15、 Optimum Recording Field partition partition reference Physical Beginning of Tape (PBOT) Physical End of Tape (PEOT) physical recording density pre-recording condition processed record processed record sequence processing record Reference Recording Field Secondary Standard Amplitude Calibration Tape
16、 Secondary Standard Reference Tape Separator Mark Standard Referemce Amplitude tape noise amplitude Tape Reference Edge track 5 Environment and safety 5.1 Testing environment 5.2 Operating environment 5.3 Storage environment 5.4 Transportation 5.5 Safety 5.6 Flammability Section 2 - Requirements for
17、 the case 6 Dimensional and mechanical characteristics of the case 5 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 General Overall dimensions Loading grip Holding areas Notches of the lid Lid dimensions Optical detection of the beginning and end of tape Bottom side 6.8.1 6.8.2 6.8.3 6.8.4 6.8.5 6.8.6 Locking mech
18、anism of the slider Access holes Recognition, sub-datum and write-inhibit holes Datum holes Access room for tape guides Holes for accessing the hubs 8 9 9 10 11 11 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 5 . . . 111 Copyright American National Standards Institute Provided by IHS under lice
19、nse with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:02:33 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 12248:1993 (E) 6.8.7 Internal structure of the lower half 6.8.8 Light path 6.8.9 Support areas 6.8.10 Datum are
20、as 6.8.11 Relationship between support and datum areas and Reference Plane Z 6.9 Hubs 6.10 Leader and trailer attachment 6.11 Interface between the hubs and the drive spindles 6.12 Opening of the lid 6.13 Release of the hub locking mechanism 6.14 Label areas Section 3 - Requirements for the unrecord
21、ed tape 7 7.1 7.2 7.2.1 7.2.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.10.1 7.10.2 7.11 7.12 7.13 8 8.1 8.2 8.3 8.4 8.4.1 8.4.2 8.5 8.6 8.6.1 8.6.2 8.7 Mechanical, physical and dimensional characteristics of the tape Materials Tape length Length of magnetic tape Length of leader and trailer tapes Tape wid
22、th Discontinuities Total thickness Longitudinal curvature Cupping Coating adhesion Layer-to-layer adhesion Tensile Strength Breaking Strength Yield Strength Residual elongation Electrical resistance of coated surfaces Light transmittance of tape Magnetic recording characteristics Optimum recording f
23、ield Signal amplitude Resolution Overwrite Physical recording densities of 750.6 and 3 002 ftpmm Physical recording densities of 83,4 ftpmm and 1 001 ftpmm Ease of erasure Tape quality Missing pulses Missing pulse zone Signal-to-noise ratio (S/N) characteristic 11 12 13 13 13 13 14 14 14 14 15 26 26
24、 26 26 26 26 26 26 26 26 26 27 27 28 28 28 28 28 29 29 30 30 30 30 30 31 31 31 31 31 31 iv Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/29/2007 13:02:33 MDTNo reproduction or networ
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ANSI ISO IEC 12248 1993 R2003
链接地址:https://www.31doc.com/p-3732919.html