Accu-Sort 10, Operation And Maintenance Manual

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G
LOSSARY
9
Solutions with Vision
Mouse
A pointing device that controls the movement of the cursor on a screen. Mouse-aware software allows the user to activate
commands by clicking a mouse button while pointing at objects displayed on the screen.
Moving-Beam
Rather than using a stationary laser beam and relying on product movement for a single scan, a multi-facet mirror wheel and
motor is used to ‘move’ the beam across the code several times while in motion itself.
Moving-Beam Bar Code Scanner
A device that dynamically searches for a bar code symbol by sweeping a moving optical beam through a field of view called the
scanning zone. Automatic bar code reader that reads codes by sweeping a moving optical beam through a field of view. Moving-
beam scanners are usually mounted in a fixed position and read codes as they pass by.
MTBF
The abbreviation for mean time between failures.
Multidrop Line
A single communications circuit that interconnects many stations, each of which contains terminal devices. See EIA-485.
NAK (Negative Acknowledgment)
A control character used to indicate that the previous transmission block was in error and the receiver is ready to accept
retransmissions.
Narrow Bar (NB)/Narrow Space (NS)
Smallest code element, bar or space, in the bar code symbol. Also known as the X dimension.
NCDRH (National Center for Devices and Radiological Health)
This organization (a service of the Food and Drug Administration) is responsible for the safety regulations governing acceptable
limitations on electronic radiation from laser devices. Accu-Sort is in compliance with the NCDRH regulations.
Near Distance
The distance (in inches) from the face of the scanner to the closest point at which a code can be successfully scanned.
NEMA
In order to rate the quality of an enclosure the National Electrical Manufacturers Association (NEMA) has developed a system
for rating all enclosures. A partial list of the NEMA enclosures is shown below along with what particles it is designed to restrict.
Ratings
3
Enclosures are intended for indoor or outdoor use primarily to provide protection against windblown dust, rain, and sleet,
and is undamaged by the formation of ice on the enclosure.
4 Enclosures are intended for indoor or outdoor use primarily to provide protection against windblown dust and rain, splashing
water, and hose-directed water; undamaged by the formation of ice on the enclosure.
4X Enclosures are intended for indoor or outdoor use primarily to provide protection against corrosion windblown dust and rain,
splashing water, and hose directed water; undamaged by the formation of ice on the enclosure.
6 Enclosures are intended for use indoors or outdoors where occasional submersion is encountered.
12 Enclosures are intended for indoor use primarily to provide a degree of protection against dust, falling dirt, and dripping
non-corrosive liquids.
13 Enclosures are intended for indoor use primarily to provide a degree of protection against dust, spraying of water, oil, non-
corrosive coolant.
Network
A series of stations (nodes) connected by some type of communication medium. A network may be made up of a
single link or multiple links.
NVC
The acronym for non-valid code. Defines the condition that occurs when an object has been scanned and no bar code could be
decoded. Usually, this indicates that either no code was on the object or the code was badly damaged and could not be decoded.
Node
The connection point at which media access is provided.
No-match
An output condition in which decoded data does not match an entry in the match code table.
No-Read
When the scanner is unable to decode a bar code as it passes through the scan zone.