Download BOP Technical Reference Manual

Barcode & OCR Printing: Technical Reference Manual
page 69 / 175
5.10 Symbology: Code 93
5.10.1 Overview
This symbology is known as:
- Code 93
- USS-93
This alpha-numeric code is quite similar to Code 39, but more compact (compressed version).
Usage
Popularity:
not as widely used
Remarks
The full 128 lower ASCII characters can be represented by escaping characters. See "Code 93 Extended" below.
Characteristics: (+) less space than Code 39; (-) low tolerance;
Example
This is a sample of a typical barcode of this symbology.
Further information
The specification of this symbology is maintained at:
(ANSI/AIM BC5-1995 (USS))
Other sources of information can be found at Appendix L.
Applications
Applications based on this symbology are:
- Code 93 Extended (*)
Those marked (*) are directly supported by this product; they are explained in separate sections right after this symbology.
5.10.2 Character set (Alphabet)
Message character set
The message character set consists of 47 = 43 (message) + 4 (control) characters.
This is the same character set as Code 39, enhanced by 4 control characters.
The full set of all 128 lower ASCII characters can be encoded by escaping characters, more specifically by prefixing uppercase letters with one
of the special control characters. See "Code 93 Extended" below.
Message data characters
Alphanumeric:
- 10 numeric digits {0,...,9}
- 26 uppercase letters {A,...,Z}
- 7 special characters { - | . | $ | / | + | % | <SP> }
Message control characters
There are 4 unique control characters: { ($), (%), (/), (+) }.
Control character
($)
(%)
(/)
(+)
Function
Escape characters for Code 93 Extended.
They cannot stand alone by themselves, but they must be in front of an uppercase letter.
Message length restrictions