MIL-HDBK-9660B
Compressed information must be decompressed by the end-user workstation/system before it is usable. Scanned images should be viewed on high resolution monitors which can display at 150 to 240 dots per inch (dpi). Standard VGA monitors display at less than 100 dpi and images often need to be "zoomed out" to be legible. Scanning images at less than 300 dpi may display on a monitor nicely, take less storage space, and take less time to transfer and print, but a significant amount of the original image detail is lost. Standard laser printers can print scanned images at a resolution of 300 dpi or greater.
5.3 End-User Guidelines.
5.3.1 Minimum End-User System to be Supported. Minimum system requirements are to be used by DOD CD-ROM producers as a baseline equipment suite to design their products. In other words, producers can assume DOD personnel will at least have access to one of the minimum system platforms described below. If producers know their users/customers have a higher level system, then they can design to the higher level. End-users looking to procure new systems or upgrade existing systems can refer to 6.1.
5.3.1.1 Minimum Computer Specifications.
DOS Environment: 80286 processor, 2 MB RAM, 20 MB hard disk (must have 10 MB free space), EGA
graphics adapter, EGA color monitor, MS DOS 5.0, Microsoft CD-ROM extensions (MSCDEX) version
2.2.
Unix Environment: Tac-3 with runtime HP-UX, or SPARCstation 2 workstation with 40 MHz SPARC floating-point processor; 14-inch monochrome monitor; 64 KB write-through cache; 32 MB RAM; 424 MB SCSI hard drive; SUN 4.1.2.
Macintosh Environment: 68030 processor with 2 MB of RAM and 20 MB hard drive running Macintosh
System 6 or 7.
5.3.1.2 Minimum CD-ROM Drive Specifications. All Environments: 2X CD-ROM drive, ISO
9660 compatible, with appropriate driver software and interface card/cabling for the computer system being used. Typical average access times for these drives range from 200-400 milliseconds (msec) and throughput/data transfer rate is approximately 300 KBps (Kilobytes per second).
5.3.2 Handling, Storage, and Cleaning of CDs. To ensure continued usefulness of a CD, do not write on, touch, or scratch the recording surface. The CD should be handled by the edges or the center hole only and should not be bent or exposed to excessive sun or heat. Store CDs in the provided container when not in use. Clean dust from the recorded side with a clean soft dry cloth, wiping in a straight motion from the disc hub to the outer edge; do not wipe in a circular motion. Liquid cleaners are available to clean other than dust from the recording surface.
5.3.3 CD-ROM Destruction and General Recycling. This paragraph covers destruction of CDs containing classified information (without 5.2.5 encryption) or Sensitive But Unclassified (SBU) information (i.e., Distribution Restricted and For Official Use Only (FOUO)), and general recycling.
Currently there is no standard for the destruction of CD-ROMs containing classified and SBU
information. Work is being done to approve a method to grind the CD-ROM surface, thus destroying the information recorded on the disc. Acceptable methods include incineration under controlled conditions, and shipping of old CD-ROMs to a central facility for destruction. Special care needs to be taken when incinerating CD-ROMs to ensure that the space is well ventilated since fumes in high concentration can
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