Microscan MS-4X Manuel d'utilisateur télécharger pdf (Page 299)

Glossary of Terms

MS-880 Industrial Long Range Scanner User’s Manual A-43

Appendices

Appendix Q — Glossary of Terms

Active On (I

). An optoisolated input that’s logically “on” when current flows through

the connection points.

Active Off (I

OFF

). An optoisolated input that’s logically “on” when no current flows

through the connection points.

Analog Gain Adjustment (AGC). Adjustment to signal strength that seeks to main-

tain a constant level regardless of the range of the bar code label.

Application Record. A variation of UCC/EAN-128 which adds an application identifier

to label data, including user-definable separators, brackets, and padding.

Autocalibration. A routine that cycles through various optical settings and selects the

combination that produce the best read rate.

Autodiscriminate. The ability to decode several different bar code symbologies with-

out changing configuration.

Auto Range. Outward focus of the scanner until an object is sensed by signal strength.

The scanner then begins searching for a decodable label.

Auxiliary Port. RS-232 connections to an auxiliary terminal or device for remote

viewing. the transfer of data to and from the host, and under certain conditions a con-

figuration port.

Bar Code. The symbol used for recognition by a bar code scanner. An array of parallel

bars and spaces of varying widths that conform to recognized standards and can be

decoded and displayed as serial data.

Bar Code Data. The information that is transmitted from a decoded bar code symbol.

Bar Code Label. The physical media on which a bar code symbol is presented.

Bar Code Density. Number of characters per inch or other unit of measure.

Baud Rate. The number of discrete signal events per second. Bits per second.

Capture. The act of grabbing or recording a frame by an sensor. A frame or succession

of frames that are captured.

Channel. A high-speed pathway between the computer and the control units of the

peripheral devices.

Check Digit. A Modulus 43 or Modulus 10 digit that is added to the bar code message

for additional data integrity.

Command Processing. Allows the user to enter the ESP program from the auxiliary

port or send serial string commands from the auxiliary port.

Configuration. A setup or process of changing a scanner’s settings to conform to a

specific application.

Concentrator. Intermediary device that relays data from scanners to a host and

commands from the host to the scanner or other devices.

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Microscan MS-4X Manuel d'utilisateur Page 299

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