Symbol MK1000 Product Reference Manual page 225

Check Digit
Codabar
Code 128
Code 3 of 9 (Code
39)
Code 93
Code Length
Continuous Code
Dead Zone
Decode
Decode Algorithm
Depth of Field
A digit used to verify a correct symbol decode. The scanner inserts the
decoded data into an arithmetic formula and checks that the resulting
number matches the encoded check digit. Check digits are required
for UPC but are optional for other symbologies. Using check digits
decreases the chance of substitution errors when a symbol is
decoded.
A discrete self-checking code with a character set consisting of digits
0 to 9 and six additional characters: ( - $ : / , +).
A high density symbology which allows the controller to encode all 128
ASCII characters without adding extra symbol elements.
A versatile and widely used alphanumeric bar code symbology with a
set of 43 character types, including all uppercase letters, numerals
from 0 to 9, and 7 special characters (- . / + % $ and space). The code
name is derived from the fact that 3 of 9 elements representing a
character are wide, while the remaining 6 are narrow.
An industrial symbology compatible with Code 39 but offering a full
character ASCII set and a higher coding density than Code 39.
Number of data characters in a bar code between the start and stop
characters, not including those characters.
A bar code or symbol in which all spaces within the symbol are parts
of characters. There are no intercharacter gaps in a continuous code.
The absence of gaps allows for greater information density.
An area within a scanner's field of view, in which specular reflection
may prevent a successful decode.
To recognize a bar code symbology (e.g., UPC/EAN) and then
analyze the content of the specific bar code scanned.
A decoding scheme that converts pulse widths into data
representation of the letters or numbers encoded within a bar code
symbol.
The range between minimum and maximum distances at which a
scanner can read a symbol with a certain minimum element width.
Glossary
Glossary-7