1、II NCH-POUNDI A-A-55431A AA55431 - Disk format o1 Unformatted. 02 Preformatted for IBM PC/AT, MS DOS 3.1 and higher. April 17, 1995 SUPERSEDING Minimun formatted memory - 1.44 megabytes (Mb) A-A-55431 Clovenher 5, 1993 CCUMERCIAL ITEM DESCRIPTION DISK, FLEXIBLE, TW-SIDED, HIGH-DENSITY, 5.3 TRACKS PE
2、R MILLIMETER (TPM) (135 TRACKS PER INCH (TPI), 90 MILLIMETERS (MI) (3.5 INCHES) The General Services Administration has authorized the use of this comercial item description (CID) for all federal agencies. 1. SCOPE. 90 mn (3.5 inches) flexible disk. applications. 2. Nunber (PIN) as shown in the foll
3、owing example (see 6.1). This CID covers the general requirements for a two-sided, high-density, 5.3 TPMH (135 TPI), Flexible disks covered by this CID are intended for comnercial/industrial CLASSIFICATION. This CID uses a classification system which is included in the Part or Identification AA55431
4、 - I o1 I CID nunber Dash nunber (see table I) 3. SALIENT CHARACTERISTICS I 03 I Preformatted for MAC. I I 3.1 Recordinq surfaces. This flexible disk shall have two recording surfaces. 3.2 Nunber of tracks. There shall be 80 discrete concentric data tracks in the recording area for data interchange
5、on each side of this disk. 3.3 Track density. This flexible disk shall have 5.3 TPHH (135 TPI). 3.4 Disk density. 3.5 Bits per radian (BPR). The BPR for this flexible disk shall be 15,916 BPR. 3.6 Jacket. inch) x 94.0 mn 10.3 mn (3.70 inches 1.012 inch). This flexible disk shall be high density with
6、 a minimum of 2.0 MB of unformatted memory. The jackets side dimensions shall be 90.0 mn + 0.4 mn -0.1 mn (3.54 inches +.O16 inch -.O04 Beneficial conments, recomnendations, additions, deletions, clarifications, etc., and any data which may improve this docunent should be sent to: 1507 Uilmington Pi
7、ke, Dayton, OH 45444-5765, or telephone (513) 296-6189, or facsimile (FAX) (513) 296-8868. Defense Electronics Supply Center, ATTN: DESC-ELDM, AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FSC 7045 Provided by IHSNot for ResaleNo reproduction or networkin
8、g permitted without license from IHS-,-,-A-A-55431A W 9999974 0366728 275 H A-A-55431A 3.7 Jacket thickness. 3.8 Operating surface temerature. This flexible disk shall withstand an operating temperature at its surface in the range from 10C to 60C (50F to 140F) at a relative hunidity of 8 percent to
9、80 percent. 3.9 Desian and construction. Flexible disks supplied to this CID shall be as specified herein and shall meet the requirements of ANSI X3.171. 3.10 Used or reconditioned material. reconditioned or is comprised of used or reconditioned material. 4. QUALITY ASSURANCE PROVISIONS The jacket t
10、hickness shall be 3.3 mn 10.2 mn (-13 inch 1.008 inch). A manufacturer shall not furnish any flexible disk which is used or 4.1 product offered meets the salient characteristics of this CID, and that the product conforms to the producers own drawings, specifications, standards, and quality assurance
11、 practices, and is the same product offered for sale in the comercial marketplace. The Govermient reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otheruise provided for under the provisions of the contract. 4.2 Certificate of cmliance. submit
12、a DESC certificate of compliance to DESC-ELDM. product meets all the requirements of ANSI X3.171, and all requirements of this CID. certificate of compliance shall accompany all flexible disks supplied to this CID. 4.3 Market acceptability. The following market acceptability criteria are necessary t
13、o docunent the quality of the product to be provided under this CID: Contractor certification. The contractor shall certify and maintain substantiating evidence that the Each contractor desiring to be listed as a suggested source of supply shall This certificate shall state that the contractors In a
14、ddition, a a. The campeny producing the item must have been producing a product meeting the requirements of this CID for at least 2 years. The campeny wst have sold 1,000 units meeting this CID in the comercial marketplace over the past 2 years. b. 5. PACKAGING 5.1 Preservation, packing. and marking
15、. Preservation, packing, and marking shall be as specified in the contract or order. 6. NOTES 6.1 pIIiI. section 2 for PIN format exanple. 6.2 Source of docunents. The PIN should be used for Govermient purposes to buy comercial products to this CID. See Other Publications AMERICAN NATIONAL STANDARDS
16、 INSTITUTE (ANSI) ANSI X3.171 - One- and Two-sided, High-Density, Unformatted, 90-mn (3.5 in), 5.3-TPMM (135-TPI1, Flexible Disk Cartridge far 15.916 bpr Use- General, Physical, and Magnetic Requirements. (Applications for copies should be addressed ta the American National Standards Institute, 11 W
17、est 42nd Street, New York, NY 10036-8002). (Industry association specifications and standards are generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 6.3 Govermient users. inventory system, contact Defense Electronics Supply
18、 Center, ATTN: DESC-EOC, 1507 Wilmington Pike, Dayton, OH 45444-5520, or telephone (513) 296-5625. To acquire information on obtaining these flexible disks from the Govermient 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-55431A W 9999774 01
19、66727 101 CID dash mnrber AA55431 - o1 02 03 6.4 Ordering data. The contract or order should specify the following: a. CID docunent mmber, revision, and CID PIN. b. Quality assurance provisions. c. d. Packaging requirements. 6.5 Suggested sources of swly. added as they become available. If a bid san
20、ple is required. Suggested sources of supply are listed below. Additional sources will be Vendor Vendor Vendor Vendor Vendor Vendor Vendor comercial connierciai comnercial conmercial comnercial comnercial comnercial PIN PIN PIN PIN PIN PIN PIN CAGE OCEN9 CAGE OEGZ7 CAGE OTWG7 CAGE 04833 CAGE 52327 C
21、AGE 55151 CAGE 74712 15820-09-EPPQ 54290 ClBA211X 725-3657-1 051111-12513 556626 476701 15829-09-EQPQ 54040 - - 051111-12881 - 476701DOS 15828-09-EPQP 54043 _ _-_ 051111-40759 - 476701 MAC Vendor CAGE nunber OCEN9 OEGZ7 OTWG7 04833 52327 55151 7471 2 Vendor name and address Syncom Technologies Incor
22、porated 1000 Syncom Drive Mi tchel 1, SD 57301 -4767 BASF Corporation Information Systems Division 35 Crosby Drive Bedford, MA 01730-1471 (800) 843-9862 (703) 256-7112 Wabash Computer Products Incorporated 12210 E. 52nd Street Tulsa, OK 74146-6204 (918) 254-9704 Nashua Media Incorporated DBA Wang Ex
23、press 57 Daniel Webster Highway Merrimack, NH 03054-4811 (508) 656-8585 Minnesota Mining and MFC Company Data Storage Products Division 3M Center St. Paul, MN 55144-1000 (800) 854-0033 Maxell Corporation of America 22-08 Route 208 Fair Lawn, NJ 07410-2606 Athana Incorporated 23955 President Avenue H
24、arbor City, CA 90710-1333 (619) 661-6600 (310) 320-4581 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-55431A = 9999974 01166730 923 A-A-55431A 6.6 Changes frun Drevious issue. Asterisks are not used in this revision to identify changes with respect to the previous issw due to the extensiveness of the changes. CIVIL AGENCY COORDINATING ACTIVITY: GSA - KMR PREPARING ACTIVITY: DLA-ES Project 7045-DO14 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
