1、INCITS/ISO/IEC 7811-6:2001/Amd.1:20052008 (ISO/IEC 7811-6:2001/Amd.1:2005, IDT) Identification cards Recording technique Part 6: Magnetic stripe High coercivity Amendment 1: Ui6criteria and test methodINCITS/ISO/IEC 7811-6:2001/Amd.1:20052008(ISO/IEC 7811-6:2001/Amd.1:2005, IDT)INCITS/ISO/IEC 7811-6
2、:2001/Amd.1:20052008 ii ITIC 2008 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the compu
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5、Central Secretariat at the address given below. Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard. Date of ANSI Approval: 6/30/2008 Published by American National Standards Institute, 25 West 43rd Street, New York, New York 10036 Copyri
6、ght 2008 by Information Technology Industry Council (ITI). All rights reserved. These materials are subject to copyright claims of International Standardization Organization (ISO), International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technolo
7、gy 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 requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005.
8、Printed in the United States of America INCITS/ISO/IEC 7811-6:2001/Amd.1:20052008 ITIC 2008 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. Nati
9、onal bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest
10、. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the
11、 rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires
12、 approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO/IEC 7811
13、-6:2001 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 17, Cards and personal identification. INCITS/ISO/IEC7811-6:2001/Amd.1:20052008 ITIC 2008 All rights reserved 1Identification cards Recording technique Part 6: Magnetic stripe High coercivity AME
14、NDMENT 1: Ui6criteria and test method page v, Foreword Add the following after point 5: 6. The algorithm defined in Figure 7 of ISO/IEC 7811-6 has been changed to produce more consistent results. page 8, subclause 7.3, Table 1 In the Requirement column for the Waveform row, replace “Ui6u 0,05 UA6” w
15、ith “Ui6u 0,07 UA6”. Add a row above the note at the end of the table for the following text: “Use test method in Annex E for waveform criteria.” Add the following sentence to the existing note: “These values are for unencoded card tests and are not applicable for encoded cards.” INCITS/ISO/IEC 7811
16、-6:2001/Amd.1:20052008 2 ITIC 2008 All rights reservedPage 9, subclause 7.3, Figure 7 Replace the figure with the one shown below. Ui6Last 0 cross point Midpoint between adjacent peaks Midpoint between adjacent peaks a 1,5a Ui6measurement area for Ui6Last 0 cross point Last 0 cross point Last 0 cros
17、s point a 1,5a measurement area for Ui61. Find midpoint between 2 adjacent peaks. 2. Find 0 crossing point for waveform between midpoint and adjacent peak. 3. The measurement area is 1,5 times the distance between the midpoint and 0 cross point. 4. Find the largest signal amplitude level in the meas
18、urement area defined in the figure. 5. The absolute value of this level is the Ui6for the waveform. INCITS/ISO/IEC 7811-6:2001/Amd.1:20052008 ITIC 2008 All rights reserved 3Page 23 Add the following annex after Annex D. Annex E (normative) Waveform Ui6test method E.1 Purpose The purpose of this test
19、 is to determine the degree of waveform distortion present in the read back waveform when recorded under the specified conditions. NOTE This test method will be included in the next published version of ISO/IEC 10373-2 (currently under revision). E.2 Apparatus The test shall be conducted using the a
20、pparatus specified in ISO/IEC 10373-2 for Amplitude measurements against this standard. E.3 Procedure Perform the entire sequence of measurements on the same equipment and under the same conditions. The read pass upon which measurements are made shall be performed while reading in the same direction
21、 as recording. Only the traverse necessary to restore the card to its start position shall intervene between the recording pass and the read pass upon which the measurements are performed. Record and read the card under the conditions specified in the base standard, with the following additional con
22、straints: a) Encode flux transitions at the density specified in Table 1 across the full length on the card in the track 2 position. b) Determine and record the value of the average amplitude UA6. c) Using the procedure in the base standard, find the largest value of Ui6for the card and record this as the Ui6value. E.4 Test report The report shall give the quantity values obtained and shall state whether or not the result conforms to the requirements of the base standard.INCITS/ISO/IEC 7811-6:2001/Amd.1:20052008 ICS 35.240.15 Price based on 3 pages ITIC 2008 All rights reserved
