C-10
Glossary
AXIOM™ 400 Product Manual
Accu-Sort Systems, inc.
A3-AXIOM400-Glossary_R10.doc
syntax
The rules dictating how you must type a command or instruction so the
computer will understand it.
tach (tachometer)
Hardware device used to provide conveyor speed information to the
scanner or camera in x pulses per inch.
tag
A collection of information associated with a single variable or I/O point.
TCP/IP
An industry standard suite of protocols providing communications in a
heterogeneous network environment. TCP/IP stands for Transport Control
Protocol/Internet Protocol
.
two-width symbology
A bar code symbology whose bar and spaces are characterized simply as
wide or narrow. Codabar, Code 39, and Interleaved 2 of 5 are examples of
two-width symbologies.
terminal program
Computer software that sends, receives, and displays serial data.
tilt
Rotation around the Z axis. Used to describe the position of the bar code
with respect to the laser scan line.
tracking
Process of keeping track of packages as they travel through the scanning
area. Tracking can be done based on the leading edge or trailing edge of
packages. Belt speed (as monitored via the TACH signal) and reader
mounting also figure into the tracking process. Several methods of
tracking are available. (
See Axcess
Modify > Tracking screen.
)
trailer
A means of identifying the end of a message sent to the host. One example
is <ETX> or End of Text.
transmit point
The time it takes to transmit the decoded results from the time the object
is first sensed (by PE or light curtain) until the completion of transmission
to the host. Transmit point is shorter (faster) for cameras because it is not
required to accommodate a scanning pattern length.
trigger
A signal, typically provided by a photoeye or proximity switch, that informs
the scan head of the presence of an object within its reading zone.
Sometimes referred to as CART signal.
trigger cycle
The time during which the reader is attempting to read the bar code.
two-dimensional symbologies
More complex bar code capable of containing much larger amounts of
data in a smaller image size because of using either a stacked or matrixed
construction when compared to the 1D codes. Example 2D codes:
DataMatrix, MaxiCode, and PDF417. Axiom does not read 2D codes.
UCC (Uniform Code Council)
The organization which administers the UPC and other retail standards.
undersquare
Used to describe bar codes that are longer (from the first to last bar) than
they are high (from the top to bottom of the bars).
Uniloader
Diagnostic feature of Axcess that is used to reload reader firmware.
UPC
Acronym for Universal Product Code. The standard bar code type for retail
food packaging in the United States.
UPS
The abbreviation for uninterruptible power supply. A battery-powered unit
that automatically supplies power to your computer in the event of an
electrical failure.
utility
A program used to manage system resources including memory, disk
drives, and printers.
verifier
A device that makes measurements of the bars, spaces, quiet zones and
optical characteristics of a symbol to determine if the symbol meets the
requirements of a specification or standard.
visible laser diode
A light source used in scanners to illuminate the bar code symbol.
Generates visible red light at wavelengths between 660 and 700 nM.
Replaced Helium-Neon tubes in most scanners because diodes are small
and consume less power.
void
The undesirable presence of an area of high reflectance in a bar.
Wide Bar (WB)/Wide Space (WS)
Widest code element, bar or space, in the bar code symbol.
wide to narrow ratio
Dividing the size of the wide elements by the size of the narrow elements
of a bar code yields the bar and space ratios. Bar and space ratios can
differ. NOTE: If the narrow bar and narrow spaces are equal and the wide
bar and wide spaces are equal then you calculate only one ratio.
window (scan head, reader, or graphical user interface)
1) The physical location on the scan head where the sensor receives
reflected laser light from the surface of products. 2) The physical location
on a scan head from which the laser light exits the device. Often referred
to as the exit window. 3) A software graphical user interface that appears
on a monitor with which the users interacts (via keyboard and/or mouse)
to operate various user-definable functions. In Axcess, there are several
buttons and drop-down menus available from the
Main Window
.
word
A unit of data which contains two bytes (16 bits).
write-protected
Read-only files are said to be
write-protected
. You can write-protect a
3.5-inch diskette by sliding its write-protect tab to the open position.
"X" dimension
The dimension of the narrowest bar and narrowest space in a bar code.
XON
A control character sent by the receiving device to signal the transmitting
device to begin sending data.
XOFF
A control character sent by the receiving device to signal the transmitting
device to stop sending data.
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...
