Symbol MiniScan MS-804FZY, Integration Manual

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Glossary-6
MS-804FZY and MS-904HS Integration Guide
Print Contrast
Signal (PCS) Measurement of the contrast (brightness difference) between the bars and
spaces of a symbol. A minimum PCS value is needed for a bar code
symbol to be scannable. PCS = (R
L
- R
D
) / R
L
, where R
L
is the reflectance
factor of the background and R
D
the reflectance factor of the dark bars.
Programming
Mode The state in which a scanner is configured for parameter values. See
Scanning Mode .
Quiet Zone A clear space, containing no dark marks, which precedes the start
character of a bar code symbol and follows the stop character.
Random Access
Memory (RAM) Memory devices where any location in memory can be accessed as
quickly as any other location.
Reflectance Amount of light returned from an illuminated surface.
Resolution The narrowest element dimension which can be distinguished by a
particular reading device or printed with a particular device or method.
RTS Request to send.
RSS Reduced Space Symbology: A family of space efficient symbologies
developed by UCC.EAN.
RxD Received data.
Scan Area Area intended to contain a symbol.