Datalogic WEC7 OS, Руководство пользователя

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Glossary
User’s Manual 243
Character
A pattern of bars and spaces which either directly represents data or
indicates a control function, such as a number, letter, punctuation
mark, or communications control contained in a message.
Decode
To recognize a barcode symbology (e.g., Codabar, Code 128, Code 3 of
9, UPC/EAN, etc.) and convert the content of the barcode scanned
from a visual pattern into electronic data.
Density (Barcode Density)
The number of characters represented per unit of measurement
(e.g., characters per inch).
Depth of Field (DOF)
The portion of a scene that appears acceptably sharp in the image.
Although a lens can precisely focus at only one distance, the
decrease in sharpness is gradual on each side of the focused
distance, so that within the DOF, the unsharpness is imperceptible
under normal viewing conditions.
Dock
A dock is used for charging the terminal battery and for
communicating with a host computer, and provides a storage place
for the terminal when not in use.
ESD
Electro-Static Discharge
Ethernet
The standard local area network (LAN) access method. A reference
to "LAN", "LAN connection" or "network card" automatically implies
Ethernet. Defined by the IEEE as the 802.3 standard, Ethernet is