Microcom LDS2 Programming Manual page 74

Chapter 4
encoding parameter. Consult the Data Matrix Specification (11/96) ANSI/AIM BC11 for
additional information.
Encoding
Scheme
ASCII
C40
Text
Base256
Auto
ACSII Encoding Scheme
ASCII encoding is the basic scheme that encodes ASCII data, double density numeric data
and symbology control characters. Which means it encodes one alphabetic or two numeric
characters per byte. All other encoding schemes are invoked from ASCII and will then
return to this scheme through the use of code words, refer to Table 9.
C40 Encoding Scheme
C40 encoding scheme used to encode uppercase alphabetic, numerical and space
characters. C40 encodes three alphanumeric data characters into two bytes.
Text Encoding Scheme
Text encoding used to encode lowercase alphabetic and numerical characters. Text
encodes three alphanumeric data characters into two bytes.
Base 256 Encoding Scheme
The Base 256 encoding scheme used to encode any 8-bit byte data, including extended
channel interpretations (ECI's) and binary data.
LDS2 Programming Manual - 880019-0202
Characters
Double digit numeric
ACSII values 0 – 127
Extended ASCII values 128 - 255
Primarily Uppercase Alphanumeric
Primarily Lowercase Alphanumeric
All byte values 0 – 255
Automatically switches to the most efficient
scheme.
Table 13 Data Matrix Encoding Schemes
Barcodes
Bits per
Character
4
8
16
5.33
5.33
8
NA
4-7