5525B/31/32 Line Matrix Printer Code V Programmer's Reference Manual

Codabar
141
Codabar
The Codabar structure is shown in Figure 8 and described on the following
pages.
Figure 8. Codabar Structure
Quiet Zone
Quiet zones extend on both ends of the bar code to permit the scan to begin
and end in a blank area. The quiet zones should be at least 0.25 inches wide
and completely blank to ensure accurate reading of the start/stop codes and
to prevent adjacent bar codes from overlapping. You are responsible for
providing sufficient space on the form for the quiet zones.
Start/Stop Codes
The start/stop codes identify the leading and trailing end of the bar code. Four
start/stop code characters (A, B, C, and D) are available in any combination
as start/stop codes. The start/stop code character must be included in the
data field to be produced with the bar code.
Data Field
The bar code symbol uses a series of wide and narrow bars and spaces to
represent numeric characters and six control characters. Each character is
represented by seven elements consisting of four bars and three spaces,
either wide or narrow.
Readable Data
The optional readable data field provides a readable interpretation of the bar
code data. Human readable data is printed below the horizontal bar code
symbol and to the left of a vertical bar code symbol. The lower guard band is
provided when the readable data field is selected.
DATA FIELD
QUIETQUIET START STOP
LOWER GUARD BAND
CODE CODEZONE ZONE
OPTIONAL READABLE DATA FIELD
HEIGHT
STARTING
POSITION
DATA
FIELD
QUIET
ZONE
QUIET
ZONE
STOP
CODE
START
CODE
OPTIONAL
READABLE
DATA
FIELD
HEIGHT
STARTING
POSITION
GUARD
LOWER
BAND