Accu-Sort 10, Operation And Maintenance Manual

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G
LOSSARY
7
Solutions with Vision
Input/Output Modules
Since many scanners are operating in environments that have electrical noise problems, it is helpful to have equipment
electrically isolated from other equipment. The standard method for isolating inputs and outputs is through the use of
OPTICALLY ISOLATED INPUT/OUTPUT MODULES. These flexible modules allow the scanner to control high voltage
outputs that are susceptible to noise. Since they are isolated from each other the noise is not picked up in the scanner.
The modules come in both input and output versions. The output versions are controlled by a 5VDC input. The output of the
modules can range from 24VAC - 140VAC or 3VDC - 200VDC. Foreign voltage ranges are available. The maximum current
that the modules can supply is limited by the output voltage and the module type. The input versions are controlled by either a
DC or AC input ranging from 3VDC - 32VDC or 90VAC - 140VAC. Foreign voltage ranges are available. The output of the
modules is a 5VDC level. The maximum current is limited by the input modules. These output modules are commonly used to
control diverters, alarms, external relays, etc. The input modules can be used for photoeye inputs.
Intercharacter Gap
The space between two adjacent bar code characters in a discrete code.
Interface
A shared boundary defined by common physical interconnection characteristics, signal characteristics and meanings of
interchanged signals.
Interleaved Bar Code
A bar code in which characters are paired together using bars to represent the first character and spaces to represent the second.
Inter-symbol no-read count
The minimum number of no-reads that must occur between symbols scanned when Self-Triggered (continuous decode) is
selected as the decode trigger. Symbols that are not preceeded by the minimum nuber of no-reads are ignored.
I/O
The abbreviation for input/output. The keyboard and a printer, are examples of I/O devices. I/O activity is different from
computational activity. When a program sends a document to the printer, it is engaging in I/O activity; when the program sorts a
list of terms, it is engaging in computational activity.
Jumper
A wire that connects a number of pins on one end of a cable only, such as looping back Request to Send from Clear to Send pins
4 and 5.
Ladder Orientation
When the bar code’s bars are positioned horizontally on the product, causing them to appear as a ladder. The ends of all bars will
enter the scan window first.
LAN
The acronym for local area network. A LAN system is usually confined to the same building or a few nearby buildings, with all
equipment linked by wiring dedicated specifically to the LAN.
Laser Gun
A hand-held non-contact laser scanner that is usually activated with a trigger.
Laser Scanner
An optical bar code reading device using a low energy laser light beam as its source of illumination.
Laser Printing
Laser printers use a pulsed or rastered laser light source to positively charge an image on a dielectric cylinder of an electrostatic
printing mechanism. Toner used in the laser printing process adheres to the charged portion of the cylinder. This toner is then
transferred to paper using heat.
Common Problems with laser printing
The labels are more expensive than those used in dot matrix printers.