Philips Speechmike6284 Configuration Manual page 87

Nominal
Nominal Size
NOTIS Editing
Parameter
Percent Decode
Print Contrast Signal
(PCS)
Programming Mode
Quiet Zone
Random Access
Memory (RAM)
Refl ectance
Resolution
RTS
RxD
Each bar\space pair consists of one information bit. A zero bit
consists of a narrow bar followed by a wide space, while one bit
consist of a wide bar followed by a narrow bar. The zero bit is one
unit bar followed by a two-unit space and the one bit is a two-
unit bar followed by a one unit space. The primary application for
the MSI Plessey code is marking of retail shelves and subsequent
scanning with portable devices for inventory purposes.
The exact (or ideal) intended value for a specifi ed parameter.
Tolerances are specifi ed as positive and negative deviations from
this value.
Standard size for a bar code symbol. Most UPC/EAN codes can
be used over a range of magnifi cations (e.g., from 0.80 to 2.00 of
nominal).
An option that strips the start and stop characters from a decoded
Codabar symbol.
A variable that can have different values assigned to it.
The average probability that a single scan of a bar code would result
in a successful decode. In a well-designed bar code scanning system,
that probability should approach near 100%.
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 = (RL - RD) / RL, where RL
is the refl ectance factor of the background and RD the refl ectance
factor of the dark bars.
The state in which a scanner is confi gured for parameter values. See
Scanning Mode.
A clear space, containing no dark marks, which precedes the start
character of a bar code symbol and follows the stop character.
Memory devices where any location in memory can be accessed as
quickly as any other location.
Amount of light returned from an illuminated surface.
The narrowest element dimension which can be distinguished by a
particular reading device or printed with a particular device or
method.
Request to send.
Received data.
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