I
Interface
A shared boundary defined by common physical
interconnection characteristics, signal
characteristics and meanings of interchanged
signals.
L
LED (Light Emitting Diode)
A low power electronic device that can serve as a
visible or near infrared light source when voltage
is applied continuously or in pulses. It is
commonly used as an indicator light and uses
less power than an incandescent light bulb but
more than a Liquid Crystal Display (LCD). LEDs
have extremely long lifetimes when properly
operated.
M
Multidrop Line
A single communications circuit that
interconnects many stations, each of which
contains terminal devices. See RS485.
P
Parameter
A value you specify to a program. Typically
parameters are set to configure a device to have
particular operating characteristics.
Picket-Fence Orientation
When the barcode’s bars are positioned vertically
on the product, causing them to appear as a
picket fence. The first bar will enter the scan
window first.
Pitch
Rotation of a code pattern about the X-axis. The
normal distance between center line or adjacent
characters.
Position
The position of a scanner or light source in relation
to the target of a receiving element.
Protocol
A formal set of conventions governing the
formatting and relative timing of message
exchange between two communicating systems.
R
Raster
The process of projecting the laser beam at
varied angles spaced evenly from each other.
Typically, the mirrored rotor surfaces are angled
to create multiple scan lines instead of a single
beam.
Resolution
The narrowest element dimension, which can be
distinguished by a particular reading device or
printed with a particular device or method.
RS232
Interface between data terminal equipment and
data communication equipment employing serial
binary data interchange.
RS485
Interface that specifies the electrical
characteristics of generators and receivers for use
in balanced digital multipoint systems such as on a
Multidrop line.
S
TCNM AD/EX Barcode Scanner
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