ANSI INCITS ISO IEC 9529-1-1989 Information processing systems - Data interchange on 90 mm (3 5 in) flexible disk cartridges using modified frequency modulation recording at 15 916.pdf

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1、 INCITS/ISO/IEC 9529-1:19892010 (ISO/IEC 9529-1:1989, IDT) Information processing systems - Data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 15 916 ftprad, on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristi

2、cs Reaffirmed as INCITS/ISO/IEC 9529-1:1989 R2015INCITS/ISO/IEC 9529-1:19892010 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

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4、are products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is

5、 found, please inform the 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: 10/6/2010 Published by American National Standards Institute, 25 West 43rd Street, New Y

6、ork, New York 10036 Copyright 2010 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)

7、, 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 requests pertaining to this standard should be submitted to ITI, 1101 K Street NW

8、, Suite 610, Washington DC 20005. Printed in the United States of America ii ITIC 2010 All rights reserved INTERNATIONAL STANDARD ISOIIEC 9529-1 First edition 1989-09-15 Information processing systems - Data interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation r

9、ecording at 15 916 ftprad, on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics Syst - Figure 2 shows Side 1; - Figure 3 shows at a larger scale the upper part of Side 0 without shutter; - Figure 4 shows the disk with hub; and - Figure 5 shows the interface between

10、the cartridge and the drive. 3 ISOAEC 9529-l : 1989 (E) 5.2 Main Elements The main elements of the flexible disk cartridge are - the recording disk; - the liner; - the case. 5.3 Description The cartridge is of a substantially square form. It includes a central hole on one side, head windows on both

11、sides, a write-inhibit hole and an identification hole. The liner is provided between the case and the disk. It comprises two layers of material between which the disk lies. The disk has a central hole with a metal hub attached. 6 General requirements 6.1 Environment and Transportation 6.1.1 Testing

12、 environment Tests and measurements made on the cartridge to check the requirements of ISO/IEC 9529 shall be carried out under the following conditions: temperature : 23Cf20C(730F+40F) relative humidity : 40% to 60% conditioning before testing : 24 h minimum For the tests specified in 9.3 the temper

13、ature and relative humidity shall be measured in the air immediately surrounding the cartridge drive. For all other tests the temperature and relative humidity shall be measured in the air immediately surrounding the cartridge. The stray magnetic field at any point on the disk surface, including tha

14、t resulting from the concentrating effect of the recording head, shall not exceed 4 000 A/m (50 Oe). 6.1.2 Operating environment Cartridges used for data interchange shall be operated under the following conditions: temperature : 10 “C to 51.5 “C (50 OF to 125 OF) relative humidity : 20% to 80% wet

15、bulb tempera- ture : less than 29 “C (85 OF) ISOAEC 9529-l : 1989 (E) The temperature and the relative humidity shall be measured in the air immediately surrounding the cartridge. It is recommended that the rate of change of the temperature should not exceed 20 “C (36 OF) per hour, and that the temp

16、erature and relative humidity conditions when reading a cartridge are not at the opposite extreme to the conditions when it was recorded. There shall be no deposit of moisture on or in the cartridge. The stray magnetic field at any point on the disk surface, including that resulting from the concent

17、rating effect of the recording head, shall not exceed 4 000 A/m (50 Oe). 6.1.3 Storage environment During storage the cartridges shall be kept within the following conditions: temperature : 4 “C to 53 “C (39 “F to 127 OF) relative humidity : 8% to 90% There shall be no deposit of moisture on or in t

18、he cartridge. The ambient stray magnetic field shall not exceed 4 000 A/m (50 Oe). NOTE - Cartridges which have been stored at temperatures and humidities outside the operating conditions may exhibit degraded performance characteristics. Such cartridges should be subjected to a conditioning period o

19、f not less than 24 h within the operating environment prior to use. 6.1.4 Transportation Responsibility for ensuring that adequate precautions are taken during transportation shall be with the sender. The cartridge shall be in a protective package free from dust or extraneous matter. It is recommend

20、ed that a sufficient space exists between cartridge and outer surface of the final container, so that risk of erasure due to stray magnetic fields will be negligible. It is recommended that the following conditions are not exceeded: temperature : - 40 “C to 60 “C (- 40 OF to 140 OF) maximum rate of

21、temperature change : 20 “C (36 OF) per hour relative humidity : 8% to 90% There should be no deposit of moisture on or in the cartridge. 6.2 Materials 6.2.1 Case The case shall be constructed from any suitable material such that it meets the requirements of annex A. 5 ISO/IEC 9529-l : 1989 (E) 6.2.2

22、. Liner The material of the liner shall be able to retain dust or debris without damage to the disk. 6.2.3. Disk The disk shall be constructed from any suitable material (for example bi-axially oriented polyethylene terephthalate) coated on both sides with a flexible layer of magnetic material. 6.2.

23、4. Hub The hub shall be made from any suitable material (for example stainless steel alloy according to IS0 683-13, type 8). 7. Dimensional characteristics The dimensions of the cartridge are referred to two Reference Axes X and Y. They are two lines in space intersecting at right angles. The plane

24、they define is the Reference Plane XY of the cartridge. 7.1 Case 7.1.1 Shape (see figure 1) The case has a rectangular form, its sides shall be 11 = 94,0 mm + 0,3 mm (3,700 in + 0,012 in) 12 = 90,O mm T if mm (3,540 in T in) 7 3 The radius of three of its corners shall be rl = 2,0 mm f. 1,0 mm (0,07

25、9 in * 0,040 in) The angle of its fourth corner shall be 7.1.2 Thickness (see figure 2) In the area extending 8,5 mm (0,335 in) from each of the two edges as shown in figure 2, the thickness of the case shall be el = 3,3 mm f 0,2 mm (0,130 in f 0,008 in) When the cartridge is inserted in the test ga

26、uge specified in annex D, a force of 0,2 N (0,69 ozf) maximum, applied to the centre of the back edge shall cause the cartridge to pass through the gauge. 6 ISO/IEC 9529-l : 1989 (E) The edge radius shall be r2 = 0,40 mm + 0,25 mm (0,150 in + 0,010 in) 7.1.3 Hub access hole (see figure 1) On Side 0

27、there shall be a hub access hole the diameter of which shall be dl = 26,50 mm min. (1,043 in min.) The position of the centre of this hole shall be defined by 13 = 40,OO mm k 0,15 mm (1,575 in + 0,006 in) 14 = 31,00 mmf 0,15 mm (1,220 ink 0,006 in) 7.1.4 Locating holes (see figures 1 and 3) 7.1.4.1

28、Primary locating hole The centre of the primary locating hole shall be at the intersection of Reference Axes X and Y. Its diameter shall be d2 = 3,6 mm + 0,l mm (0,142 in f 0,004 in) The dimensions of its section (see cross-section A-A in figure 1) shall be d3 = 1,5 mm min. (0,059 in min.) 18 = 0,2

29、mm f 0, 1 mm (0,010 in f 0,004 in) 19 = 1,0 mm min. (0,039 in min.) 110 = 2,5 mm min. (0,098 in min.) 7.1.4.2 Secondary locating hole The centre of the secondary locating hole shall be on Reference Axis X, its distance from Reference Axis Y shall be 15 = 80,O mm rt 0,2 mm (3,150 in x = 38,000 0 mm (

30、1,4961 in) for Side 1. 9.2.3.2 Track location tolerance For testing purposes, the centrelines of the recorded tracks shall be within + 0,020 mm (+ 0,000 8 in) of the nominal positions, when measured in the testing environment (6.1.1). 9.2.3.3 Line of access of the read/write heads The line of access

31、 of the read/write heads is a line parallel to a radial line and spaced 0,35 mm (0,013 8 in) from it (see ISO/IEC 9529-2 subclause 3.3). 9.2.4 Track number The track number shall be a two-digit decimal number (from 00 to 79) for each side. It identifies the tracks consecutively, starting at the oute

32、rmost track (00). 9.3 Functional testing 9.3.1 Test conditions Drive unit : The same drive unit shall be used for writing and reading operations, for both the disk under test, and RM9529 (or a tertiary cartridge see 4.7) Rotational speed : 300 r/min _+ 3 r/min Test frequencies : If= 250 000 ftps + 2

33、50 ftps 2f= 500 000 ftps + 500 ftps The frequency (ies) to be used is (are) specified in each test. 15 ISOAEC 9529-l : 1989 (E) Recording current : The Test Recording Current for the side being tested. Recording/Reading : In - Contact condition Extent of the tested : The tests shall be performed on

34、both sides of the disk. area Correction fat tors : The values obtained when using the RM9529 (or a tertiary cartridge - see 4.7) shall be corrected by the calibration factors provided with the RM9529 (and established for a tertiary cartridge - if used) 9.3.2 Surface tests The magnetic properties are

35、 defined by the test requirements given below. 9.3.2.1 Typical field The typical field of the disk under test shall be within + 20% of the Reference Field. It shall be measured using lf on Track 00. 9.3.2.2 Average Signal Amplitude Record: on Track 00 using lf, and on Track 79 using 2J Read back and

36、 compare with RM9529 recorded under the same conditions. The Average Signal Amplitude shall be On Track 00, less than 130% of SRA-If On Track 79, more than 80% of SRA-2f 9.3.2.3 Resolution After recording on track 79, the ratio: Average Signal Amplitude using 2f Average Signal Amplitude using lf sha

37、ll be greater than 80% of the same ratio for the Master Standard Reference Flexible Disk Cartridge. 9.3.2.4 Peak shift The average peak shift measured on the disk cartridge under test, using the method specified in annex E, shall be within the range from 63% to 137% of that of the Master Standard Re

38、ference Flexible Disk Cartridge. This test shall be performed on Track 79. 16 ISO/IEC 9529-l : 1989 (E) 9.3.2.5 Overwrite The overwrite ratio Residual Signal Amplitude at If after overwrite using 2f Signal Amplitude after first recording using lf shall be less than 125 % of the value of the same rat

39、io for the Master Standard Reference Flexible Disk Cartridge when measured according to annex F. 9.3.2.6 Modulation Modulation shall be Maximum mean - Minimum mean x 100% Maximum mean + Minimum mean The maximum mean shall be the average value of the amplitude - modulated output voltage in that part

40、of the track with the maximum amplitudes, and the minimum mean shall be that in the respective part with the minimum amplitudes. Output voltage shall be measured peak-to-peak; averaging shall be done over about 2 000 consecutive flux transitions. On Track 00 using lf, and on Track 79 using 2f, modul

41、ation shall be less than 10%. 9.3.3 Track quality tests These tests shall apply to all 80 tracks at the defined positions. 9.3.3.1 Missing pulses Write a track with 2f and measure the Average Signal Amplitude. Any read signal which, when measured base-to-peak, is less than 45% of half the Average Si

42、gnal Amplitude of the track, shall be a missing pulse. 9.3.3.2 Extra pulse Write a track with 2f and measure the Average Signal Amplitude. Erase the track for one revolution with a direct current equivalent to the quiescent value of the Test Recording Current. Any read signal which, when measured ba

43、se-to-peak, exceeds 20% of half the Average Signal Amplitude shall be an extra pulse. 17 ISOAEC 9529-l : 1989 (E) 9.3.4 Rejection criterion 9.3.4.1 Defective track A track on which one or more missing or extra pulses, or both, are detected in the same position(s) on consecutive passes shall be a def

44、ective track. The applicable number of consecutive passes shall be a matter for agreement between the interested parties. 9.3.4.2 Requirement for tracks As initially received from the medium supplier, the cartridge shall have no defective tracks. 9.3.4.3 Rejected cartridge A cartridge which does not meet the requirement of 9.3.4.2 shall be rejected. 18 ISO/IEC 9529-l : 1989 (E) Figure 1 - Side 0 19 ISO/IEC 9529-l : 1989 (E) Side 0 Figure 2 - Side 1 20 ISOAEC 9529-l : 1989 (E) /3 -:-: - 1 Y 27 Figure 3 - Side 0 Figure 3 Side 0 21