A-A-55001/4B
6.2 CD-ROM disk drive unit. A CD-ROM disk drive unit consists of one or more connected CD-ROM disk
drives within a single cabinet as a distinct fully integrated unit.
6.2.1 CD-ROM disk drive. A CD-ROM disk drive is a computer peripheral that plays CD-ROM disks.
6.3 SCSI CD-ROM disk drives. Users should verify that their personal computer (PC) is SCSI compatible.
If a SCSI interface card is needed then AA55001/04-01 or AA55001/04-03 should be considered.
AA55001/04-02 and AA55001/04-04 are not provided with a SCSI interface card.
6.4 Multimedia PC Marketing Council (MPC) level II minimum requirements. The following requirements
are minimum requirements which a CD-ROM disk drive must meet to be compliant to MPC level II.
a. Double speed with CD-DA outputs (capable of sustained 300 kilobytes/second transfer rate).
b. No more than 40 percent of the CPU bandwidth may be consumed when maintaining a
sustained transfer rate of 150 kilobytes/second.
c. Average seek time of 400 ms or less.
d. 10,000 hours MTBF.
e. CD-ROM XA ready (mode 1 capable, mode 2 form 1 capable, mode 2 form 2 capable).
f. Multisession capable.
g. MSCDEX 2.2 driver or equivalent that implements extended audio APIs.
h. Subchannel Q support (P, R-W optional).
6.5 CAGE code. For ordering purposes, inventory control, and submission of these CD-ROM disk drive
units to DESC under the Military Parts Control Advisory Group (MPCAG) evaluation program, CAGE code
58536 should be used.
6.6 Source of Documents.
Commercial Item Description
A-A-55001
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Disk Drive Unit, Half Height, CD-ROM, Small Computer System Interface
(SCSI), and Other Accessories, General Requirements for.
(Copies of commercial item descriptions are available from the Defense Printing Service Detachment
Office, Building 4D (Customer Service), 700 Robbins Avenue, Philadelphia, PA 19111-5094.)
Other Publications
INTERNATIONAL STANDARDS OFFICE (ISO)
ISO 9660 - Information Processing - Volume and File Structure of CD ROM for Information
Interchange.
(Applications for copies should be addressed to the International Standards Organization,
3 Rue De Varembe' Geneve, Switzerland.)
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