C-6
Glossary
AXIOM™ 400 Product Manual
Accu-Sort Systems, inc.
A3-AXIOM400-Glossary_R10.doc
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.
net mask
A numeric value that is used by devices to determine whether the device it
wishes to communicate with is on the same network. If not, the data must
be forwarded via a Gateway. May also be referred to as Subnet Mask. (See
gateway, gateway address
.)
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 reader is unable to decode a bar code as it passes through the
scan zone.
non-read
The absence of data at the reader output after an attempted scan due to
no code, defective code, scanner failure or operator error.
odd-parity
A data verification method in which each character must have an odd
number of on bits.
omni-directional
Orientation is unpredictable and can be ladder, picket fence, or any angle
in between. A single scan line is not sufficient to scan bar codes oriented
omnidirectionally.
one-dimensional symbologies
Also referred to as linear codes. Examples: Code 39, I2of5, and UPC are all
1D or linear bar codes.
operating range
The sum of the scanner’s optical throw and depth-of-field. Also referred to
as the read zone or read range.
optical throw
Measured distance from the scanner’s window to the near reading
distance of the depth of field. Typically, this is the closest a bar code can
be to the scanner’s window and still be properly decoded.
optimum reading distance
Typically, the center of the depth of field.
orientation
The alignment of the code’s bars and spaces to the scan head. Often
referred to as vertical (picket fence) and horizontal (ladder).
output counter
A counter that is associated with each output condition. The counter
increments by 1 each time the condition occurs.
oversquare
Used to describe bar codes that are taller (from top to bottom of the bars)
than they are wide (from first to last bar).
package spacing
This is the spacing between items on a conveyor. Package spacing is
measured one of two ways: Leading edge of one box to leading edge of the
next or trailing edge of one box to trailing edge of the next. Package
spacing is critical to system operations.
parameter
A value or opinion that you specify to a program. A parameter is
sometimes called a
switch
or an
argument
. All parameters for Axiom can
be configured using the Axcess software.
parameter file, PAM file
File of Axiom parameters that can be modified via Axcess. Parameters that
are changed using the series of
Modify
functions will only be saved when
the save or backup functions are used. It is recommended that copies of
these files be kept on the system PC or network.
parameter storage module
EEPROM (Electronically Erasable Programmable Read-Only Memory) chip
where the parameter (PAM) file is stored in both the scan head and wiring
base.
parity bit
A bit that is set at “0” or “1” in a character to ensure that the total number
of 1 bits in the data field is even or odd.
percent good reads
The number of successful reads per refresh period. This is valid only when
the refresh period is set to 0.
Summary of Contents for AXIOM 400
Page 1: ...AXIOM 400 Bar Code Scanning Solutions Product Manual...
Page 96: ...8 8 Service AXIOM 400 Product Manual Accu Sort Systems inc 08 AXIOM400 Service_R10 doc Notes...
Page 104: ...B 2 Read Charts AXIOM 400 Product Manual Accu Sort Systems inc A2 AXIOM400 ReadCharts_R10 doc...
Page 105: ...AXIOM 400 Product Manual Read Charts B 3 A2 AXIOM400 ReadCharts_R10 doc Accu Sort Systems inc...
Page 106: ...B 4 Read Charts AXIOM 400 Product Manual Accu Sort Systems inc A2 AXIOM400 ReadCharts_R10 doc...
Page 107: ...AXIOM 400 Product Manual Read Charts B 5 A2 AXIOM400 ReadCharts_R10 doc Accu Sort Systems inc...
