DLA A-A-55430 A-1995 DISK FLEXIBLE TWO-SIDED HIGH-DENSITY 3 8 TRACKS PER MILLIMETER (TPMM) (96 TRACKS PER INCH (TPI)) 130 MILLIMETERS (MM) (5 25 INCHES)《3 8磁道每毫米(TPMM)(96磁道每英寸)130M.pdf
《DLA A-A-55430 A-1995 DISK FLEXIBLE TWO-SIDED HIGH-DENSITY 3 8 TRACKS PER MILLIMETER (TPMM) (96 TRACKS PER INCH (TPI)) 130 MILLIMETERS (MM) (5 25 INCHES)《3 8磁道每毫米(TPMM)(96磁道每英寸)130M.pdf》由会员分享,可在线阅读,更多相关《DLA A-A-55430 A-1995 DISK FLEXIBLE TWO-SIDED HIGH-DENSITY 3 8 TRACKS PER MILLIMETER (TPMM) (96 TRACKS PER INCH (TPI)) 130 MILLIMETERS (MM) (5 25 INCHES)《3 8磁道每毫米(TPMM)(96磁道每英寸)130M.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、 A-A-55430A 9999974 0366700 176 AA55430- CI NCH-POUND1 A-A-55430A April 17, 1995 SUPERSEDING A-A-55430 November 5, 1993 Disk format Minim formatted memory COMMERCIAL ITEM DESCRIPTION o1 02 DISK, FLEXIBLE, TWO-SIDED, HIGH-DENSITY, 3.8 TRACKS PER MILLIMETER (TPMM) (96 TRACKS PER INCH (TPI), 130 MILLIM
2、ETERS (Mi) (5.25 INCHES) The General Services Administration has authorized the use of this comercial item description (CID) for all federal agencies. 1. 130 mn (5.25 inches) flexible disk. comnercial/industrial applications. 2. Nunber (PIN) as shown in the following exanple (see 6.1). SCOPE. This C
3、ID covers the general requirements for a two-sided, high-density, 3.8 TPMM (96 TPI), Flexible disks covered by this CID are intended for CLASSIFICATIDII. This CID uses a classification system which is included in the Part or Identification Unformatted. - Preformatted for IBM PC/AT, MS DOS 3.1 and hi
4、gher. 1.2 megabytes (Mb) CID nunber Dash nunber (see table I) 3. SALIENT CHARACTERISTICS TABLE I. Characteristics I 03 I Preformatted for MAC. 1 I 3.1 Recording surfaces. This flexible disk shall have two recording surfaces. 3.2 Nunber of tracks. There shall be 80 discrete concentric data tracks in
5、the recording area for data interchange on each side of this disk. 3.3 Track density. 3.4 Disk density. 3.5 3.6 Jacket. The jacket shall be square with a side 133.3 mn 20.4 mn (5.250 inches t.015 inch). This flexible disk shall have 3.8 TPMM (96 TPI). This flexible disk shall be high density with a
6、minim of 1.5 Mb of unformatted mry. Flux transitions per radian (FTPR). The FTPR for this flexible disk shall be 13,262 FTPR. Beneficial cmnts, recmndations, additions, deletions, clarifications, etc., and any data which may inprove this docunent should be sent to: 1507 Uilmington Pike, Dayton, OH 4
7、5444-5765, or telephone (513) 296-6189, or facsimile (FAX) (513) 296-8868. Defense Electronics Supply Center, ATTN: DESC-ELDM, AMSC NIA DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FSC 7045 Provided by IHSNot for ResaleNo reproduction or networking permitted with
8、out license from IHS-,-,-A-A-55430A 9999974 OLbb7OL O22 A-A-55430A 3.7 Jacket thickness. The jacket thickness shall be 1.397 m to 1.905 mn (.O55 inch to .O75 inch). 3.8 Operating surface temerature. surface in the range from 10“C to 51.5“C (40F to 125F) at a relative hunidity of 8 percent to 80 perc
9、ent. 3.9 Design and construction. meet the requirements of ANSI X3.162. 3.10 Used or reconditioned material. reconditioned or is comprised of used or reconditioned material. 4. QUALITY ASSURANCE PROVISIONS This flexible disk shall withstand an operating tenperature at its Flexible disks supplied to
10、this CID shall be as specified herein and shall A manufacturer shall not furnish any flexible disk which is used or 4.1 Contractor certification. product offered meets the salient characteristics of this CID, and that the product conforms to the producers own drawings, specifications, standards, and
11、 quality assurance practices, and is the same product offered for sale in the comercial marketplace. The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for der the provisions of the contract. 4.2 Certificate of c
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