Users Guide

DIAG
Diagnostic section of maintenance information manual.
differential
See High Voltage Differential (HVD).
direct access storage
A storage device in which the access time is independent of the location of the data.
display contrast
The brightness of the display on the Operator Panel.
DLL Dynamic Link Library. The Microsoft implementation of the shared library concept. These
libraries usually have the file extension dll, ocs (for libraries that contain activeX controls, or drv
(for legacy system drivers).
DNS Directory Name System. This allows the library to recognize text-based addresses instead of
numeric IP addresses.
download
To transfer programs or data from a computer to a connected device, typically a personal
computer.
To transfer data from a computer to a connected device, such as a workstation or personal
computer.
DPF Data Path Failover.
DRAM
Dynamic random-access memory.
drive, magnetic tape
A mechanism for moving magnetic tape and controlling its movement.
Drive Not Configured
This message occurs during the first boot after a factory settings restore is run. This message is
not a real issue since it takes time for the library to configure.
DRV Drive.
DSA key
Encryption key type.
DSE Data security erase.
DSP Digital signal processor.
E
EBCDIC
Extended binary-coded decimal interchange code.
EC Edge connector. Engineering change.
ECC Error correction code.
EEB Ethernet Expansion Blade
EEPROM
Electrically erasable programmable read-only memory.
EIA Electronics Industries Association.
EIA unit
A unit of measure, which is established by the Electronic Industries Association, equal to 44.45
millimeters (1.75 inches).
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