Follett VERSION 6.00 Manual de usuario descargar pdf (Pagina 647)

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Appendix D Barcode symbologies

If your site uses any barcode symbology other than Follett Classic, you must

define the barcode symbology. This appendix contains the following information:

an overview of barcode composition; basic barcode terminology; a listing of your

barcode symbology options; instructions for defining your barcode symbologies;

and a description of how to assign barcodes to items and patrons.

What does a barcode contain?

A barcode contains two primary parts: bars and spaces. A row of numbers

beneath the barcode, called the eyereadable line, is an interpretation of what the

bars and spaces represent.

As shown in the figure below, the bars and spaces can be broken down even

further into the following components:

 Type identifier

 Location code

 Item number

 Check digit

Type identifier Location code Item number Check digit

3 1234 00001006 4

CODE 39 MOD 10

In this example, the components begin in the following positions:

Position 1

Length = 1

Position 2

Length = 4

Position 6

Length = 8

Position 14 (last)

Length = 1

The order of the components may vary except for the check digit, which always

remains in the last position if it is part of the symbology.

Not every barcode symbology will contain all of the components. For example,

your site might not use location code.

Important: If you will be using a PHD to collect barcodes, your barcodes must

include a Type Identifier regardless of the symbology you choose.

Follett Classic symbologies assume a Type Identifier of P" for patron

barcodes and a T" for library material barcodes.

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