EN 28630-1:1992
(Main)Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - Part 1: Dimensional, physical and magnetic characteristics (ISO 8630-1:1987, ed. 1)
Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - Part 1: Dimensional, physical and magnetic characteristics (ISO 8630-1:1987, ed. 1)
Informationsverarbeitung - Datenaustausch auf 130 mm (5,25 in) Disketten mit modifizierter Wechseltaktschrift bei zweiseitiger Aufzeichnung mit 13 262 Flußwechsel/rad und 80 Spuren auf jeder Seite - Teil 1: Maße, physikalische und magnetische Eigenschaften (ISO 8630-1:1987, Ausg. 1)
Traitement de l'information - Echange de données sur cartouches à disquettes de 130 mm (5,25 in) utilisant un enregistrement à modulation de fréquence modifiée (MFM) à 13 262 ftprad sur 80 pistes sur chaque face - Partie 1: Caractéristiques dimensionnelles, physiques et magnétiques (ISO 8630-1:1987, éd. 1)
La CEI 62524:2009 spécifie un format de lecteur pour l'édition électronique multimédia, utilisé pour l'échange de données de livres électroniques entre éditeurs et lecteurs, satisfaisant à un certain nombre d'exigences des lecteurs telles que le fait d'être non révisable, de pouvoir s'adapter au matériel et de pouvoir s'adapter à l'application.
Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - Part 1: Dimensional, physical and magnetic characteristics (ISO 8630-1:1987)
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - Part 1: Dimensional, physical and magnetic characteristics (ISO 8630-1:1987)Informationsverarbeitung - Datenaustausch auf 130 mm (5,25 in) Disketten mit modifizierter Wechseltaktschrift bei zweiseitiger Aufzeichnung mit 13 262 Flußwechsel/rad und 80 Spuren auf jeder Seite - Teil 1: Maße, physikalische und magnetische Eigenschaften (ISO 8630-1:1987, Ausg. 1)Traitement de l'information - Echange de données sur cartouches a disquettes de 130 mm (5,25 in) utilisant un enregistrement a modulation de fréquence modifiée (MFM) a 13 262 ftprad sur 80 pistes sur chaque face - Partie 1: Caractéristiques dimensionnelles, physiques et magnétiques (ISO 8630-1:1987, éd. 1)Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - Part 1: Dimensional, physical and magnetic characteristics (ISO 8630-1:1987, ed. 1)35.220.21Magnetni diskiMagnetic disksICS:Ta slovenski standard je istoveten z:EN 28630-1:1992SIST EN 28630-1:1997en01-december-1997SIST EN 28630-1:1997SLOVENSKI
STANDARD
SIST EN 28630-1:1997
SIST EN 28630-1:1997
SIST EN 28630-1:1997
INTERNATIONAL STANDARD 86304 First edition 1987-06-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEmYHAPOfiHAfl OPTAHM3A~Mfl fl0 CTAHjJAPTM3A~MM Information processing - Data interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks on each side - .l and magnetic characteristics Part 1: Dimensional, physica, Reference number ISO 86304: 1987 (E) SIST EN 28630-1:1997
Foreword ISO (the international Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take patt in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8630-1 was prepared by Technical Committee ISO/TC 97, Information processing systems. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its Jatest edition, unless ott-ierwise stated. 0 International Organization for Standardization, 1987 Printed in Switzerland SIST EN 28630-1:1997
ISO 8630-1 :1987 EI Contents Page 0 Introduction . 1 Scope and field of application . 2 Conformance . 3 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 flexibledisk . reference flexible disk cartridge . Secondary Amplitude Reference Disk Cartridge . Signal Amplitude Reference Disk Cartridge . Typical Field . Reference Field . i. . Test Recording Current. . Standard Reference Amplitude . Average Signal Amplitude . in-contact . formatting . initialization . recordingarea . 5 General description . 5.1 General figures. . 5.2 Main elements . 5.3 Description . 5.4 Optional features . 6 General requirements . 6.1 Environment and transportation . : . 6.2 Materials . 6.3 Direction of rotation . 1 1. 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 . . . Ill SIST EN 28630-1:1997
IsO8630-1 : 1987 EI 7 Dimensional characteristics . 3 7.1 Jacket . 4 7.2 Liner . 5 7.3 Disk . 5 8 Physical characteristics . 5 8.1 Flammability . 5 8.2 Coefficient of linear thermal expansion of the disk . 5 8.3 Coefficient of linear hygroscopic expansion of the disk . 5 8.4 Opacity. . 5 8.5 Torque . 5 9 Magnetit characteristics . 6 9.1 Trackgeometry . 6 9.2 Functional testing . 6 Annexes A Measurement of the cartridge thickness . 12 B Measurement of light transmittance . 14 C Method for measunng the effective track width . 16 SIST EN 28630-1:1997
INTERNATIONAL STANDARD ISO 86304 : 1987 (E) nformation processing Data interchange on mm (5.25 in) flexible isk cartridges using modified ency modulation recording at 13 262 ftprad, on 80 tracks on each side - Part 1: Dimensional, physical and magnetic characteristics 0 lntroduction ISO 8636 specifies the characteristics of 130 mm (5.25 in) flexible disk cartridges recorded at 13 262 ftprad, using modified frequency modulation (MFM) recording, on 80 tracks on each side. ISO 8630-2 and ISO 8630-3 each specify the quality sf recorded Signals, the track layout, and a track format to be used on 130 mm (5.25 in), 13 262 ftprad flexible disk cartridges intended for data interchange between data processing Systems. ISO 8630-1 and ISO 8630-2, together with the labelling scheme specified in ISO 7665, provide for full data interchange between data processing Systems. ISO 8630-1 and ISO 8630-3, together with the labelling scheme specified in ISO 9293, provide an alternative method of full data interchange between data processing Systems. 1 Scope and field of application This part of ISO 8630 specifies the dimensional, physical and magnetic characteristics of the cartridge so as to provide physical interchangeability between data processing Systems. NOTE - Numeric values in the SI and/or Imperial measurement System in this patt of ISO 8630 may have been rounded off and therefore are consistent with, but not exactly equal to, each other. Either System may be used, but the two should be neither intermixed nor re-converted. The original design was made using Imperial units and futther developments were made using SI units. 2 Conformance A flexible disk cartridge shall be in conformance with ISO 8630 when it meets all the requirements of this patt of ISO 8630 and all those of either ISO 8630-2 or ISO 8630-3. 3 References ISO 646, Information processing - ISO 7-bit coded Character set for informa tion in terchange. ISO 2022, lnformation processing - ISO 7-bit and 8-bit coded Character sets - Code extension tecbniques. ISO 4873, Information processing - EO 8-bit Code for infor- ma tion in terchange - Structure and rules for implementation. ISO 6429, Information processing - ISO 7-bit and 8-bit Character sets - Additional con trol functions for character- imaging devices. I S 0 7665, Information processing - File s truc ture and labelfing of flexible disk catiridges for information interchange. ISO 9293, Information processing - Vofume and file structure of flexible disk cartridges for informa tion in terchange. 4 Definitions For the purpose of ISO 8630 the following definitions apply. 4.1 flexible disk: A flexible disk which accepts and retains on the specified side or sides magnetic Signals intended for input/output and storage purposes of information data pro- cessing and associated Systems. 4.2 Reference Flexible Disk Cartridge: A flexible disk car- tridge arbitrarily selected for a given property for calibrating purposes. 4.3 Secondary Reference Flexible Disk Cartridge: A flexible disk cartridge intended for routine calibrating purposes, the Performance of which is known and stated in relation to that of the reference flexible disk cartridge. SIST EN 28630-1:1997
ISO 86304 : 1987 (EI 4.4 Signal Amplitude Reference Flexible Disk Car- tridge: A reference flexible disk cartridge selected as a Standard for recording field and Signal amplitude. NOTE - A master Standard for Signal amplitudes reference field, over- write and resolution characteristics has been established by the Physikalisch-Technische Bundesanstalt (PTB) Bundesallee 100 in Braunschweig, Germany, F. R. Secondary reference flexible disk car- tridges tan be ordered from PTB Lab 1.41 under part number RM 8630 as long as available. This material is also available through the U.S. National Bureau of Standards (NBS)‘) under the part number RM 8630. 4.5 Typical Field: In the plot of average Signal amplitude against recording field, at the specified track location and flux transition density, the Typical Field is the minimum field which Causes an average Signal amplitude equal to 95 % of the maxi- mum average Signal amplitude. 4.6 Reference Field: The Typical Field of the reference flexible disk cartridge for recording field and Signal amplitude. There are two Reference Fields, one for each side. 4.7 Test Recording Current (for each side): The current between 145 % and 155 % of the current which produces the Reference Field at 250 000 flux transitions per second (ftps) on track 00. There are two Test Recardirrg Currents, one for each side. 4.8 Standard Reference Amplitude (SRAI: The average Signal amplitudes derived from the reference tracks on the Signal amplitude reference flexible disk cartridge using the appropriate Test Recording Current. There are four Standard Reference Ampiitudes, two for each side. SRA,f is the average Signal amplitude from a recording written using 250 000 ftps at track 00. SRAZJ is the average Signal amplitude from a recording written using 500 000 ftps at track 76 (see 9.1.4). 4.9 Average Signal Amplitude : The arithmetically averaged value for a track of the output voltages measured peak-to-peak over the whole track. 4.10 in-contact : An operating condition in which the magnetic sur-face of the disk intended for data storage is in physical contact with the magnetic heads. 4.11 formatting : Writing the proper control information, establishing the physical tracks and designating the addresses of physical records on the flexible disk surfaces. 4.12 initialization : Writing any information initially required to be on the flexible disk cartridge, for example the ERMAP Label, Prior to the commencement of general processing. 1) 4.13 recording area : That area of each disk surface with which the head may come into contact. 5 General description 5.1 General figures A typical flexible disk cartridge is represented in figures 1 to 3 as follows: Figure 1 - Flexible disk cartridge, Shows the cartridge seen from above, side 0 up. Figure 2 - Section A-A, is a Cross-section along line A-A in figure 1. Figure 3 - Protective envelope with cartridge, Shows a pro- tective envelope with cartridge, side 1 up. 5.2 Main elements The main elements of this flexible disk cartridge are - the recording disk; - the liner; - the jacket. The cartridge is stored in an envelope. 5.3 Description The jacket is of a Square form. lt includes a central window, an index window, and a head window in both sides. The liner is fixed to the inside of the jacket. lt comprises two layers of material between which the disk is held. The liner has the same openings as the jacket. The disk has only a central hole and an index hole. 5.4 Optional features The interchange characteristics of the jacket allow for varia- tions of its construction as follows: a) the jacket may include flaps (for example three flaps as shown in figure 2, or none); and b) notches along the reference edge. 6 General requirements 6.1 Environment and transportation 6.1.1 Testing environment Tests and measurements made on the cartridge to check the requirements of ISO 8630 shall be carried out under the follow- ing conditions : - temperature: 23 + 2 OC (73 + 4 OF); - relative humidity: 40 to 60 %; - conditioning before testing: 24 h minimum. NBS, Office of Standard Reference Materials, Room 311, Chemistry Building, Gaithersburg, MD 20899, USA. 2 SIST EN 28630-1:1997
ISO 8630-1 : 1987 IE) The temperature and the relative humidity shal the air immediately surrounding the cartridge. I be measu red in The stray magnetic field at any Point on the disk surface, including that resulting from the concentrating effect of the recording head, shall not exceed 4 000 A/m (50 Oe). 6.1.2 Bperating environment Cartridges used for data interchange shall be operated under the following conditions : - temperature: 10 to 51,5 OC (50 to 125 OF); - relative humidity : 20 to 80 % ; - wet-bulb temperature: less than 29 OC (84 OF). The temperature and the relative humidity shall be measured in the air immediately surrounding the cartridge. lt is recom- mended that the rate of Change of the temperature should not exceed 20 OC (36 OF) per hour. 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 concentrating 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 under the following conditions : - temperature: 4 to 51,5 OC MO to 125 OF); - relative humidity : 8 to 80 %. Esch cartridge shall be in Position. an envelope and in an upright There shall be no deposit of moisture on or in the cartridge. The ambient stray magnetic field at any Point on the disk su r- face 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 per- formante characteristics. Such cartridges should be subjected to a conditioning period of not less than 24 h within the operating environ- ment Prior to use. 6.1.4 Transportation Responsibility for ensuring that adequate precautions are taken during transportation shall be with the Sender. During trans- portation the cartridge shall be in its envelope and in a protec- tive package. The latter shall be free from dust or extraneous matter. It shall have a clean interior and construction to minimize ingress of dust and moisture. lt is recommended that a sufficient space exists between cartridge and outer surface of the final Container, so that risk of darnage due to stray magnetic fields will be negligible. lt is recommended that the following conditions are not exceeded : - temperature : -40 to +51,5 OC (-40 to +125 OF); - maximum rate of temperature Change: 20 OC (36 OF) per hour; - relative humidity : 8 to 90 %. There should be no deposit of moisture on or in the cartridge. 6.1.5 Handling The cartridge shall stay out of its envelope for the shortest time possible. When handling the cartridge the Operator shall not tauch the exposed magnetic surfaces of the disk and shall avoid exposing the cartridge to direct sunlight, moisture and dust. 6.2 Materials 6.2.1 Jacket The jacket may be constructed from any suitable material. 6.2.2 Liner The material of the liner shall be able to retain dust without darnage to the disk. 6.2.3 Disk The disk may be constructed from any suitable material (for example bi-axially oriented polyethylene terephthalate) coated on both sides with a strong and flexible layer of magnetic material (for example Co-yFe20,). 6.2.4 Envelope The envelope may be manufactured from any suitable material (for example Paper). 6.3 Direction of rotation The direction of rotation shall be counterclockwise when look- ing at side 0. 7 Dimensional characteristics The dimensional characteristics listed in the following clauses are indicated in figures 4 to 7. Figure 4 - Jacket dimensions, Shows the jacket. Figure 5 - Cartridge thickness, Shows a partial cross- section of the jacket. Figure 6 - Disk dimensions, Shows the disk. Figure 7 - Disk thickness, Shows a Cross-section of the disk. All dimensions are referred to the reference edge of t
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