Barcode reader VB34
Glossary
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Subject to reasonable modifications due to technical advances.
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LED (light emitting diode, also referred to as luminescence diode)
A semiconductor-based light source with a low energy requirement, which emits light
in the visible or in the infrared area continuously or in impulse form to show whether
voltage exists. It is frequently used for display purposes. Its power consumption is less
than that of an electric light bulb, but above that of liquid crystal displays (LCD). If the
service conditions are adhered to, the LEDs have an extremely long life.
Reader
A device which reads printed patterns (barcodes) and which either transmits the data
in an unevaluated state to a decoder or decodes the data and transmits this data to a
host system.
Multidrop lead
A communication path to which several partners can be connected. Also refer to
RS485.
Tilt angle
The rotation of the code in the X axis. S. Section (Chapter 6.5).
PackTrack™
PackTrack™ is a patented packet tracking system, which improves the read
functionality in omnidirectional stations. PackTrack™ manages 6-page read systems,
where it is not possible to recognize the actual position of the code on the packet.
External accessories which are indispensable in traditional tracking systems are thus
unnecessary.
Parameters
A value for specific attributes, which you specify in a program. Generally, parameters
are set in order to configure the device to a certain operating behavior.
Position
The position of the reader or the light source relative to the target of a receiver
element.
Protocol
A collection of formal conventions pertaining to the formatting and time-specific
course of messages and their exchange between two communication partners.
RS232
An interface standard for the serial, binary data exchange between a DTE (data
terminal equipment) and a DCE (data communications equipment), that is, between
two partners.
RS485
An interface standard for the serial data exchange between several transmitters and
receivers via a symmetrical transmission system with several partners, such as via a
Multidrop lead.