Microscan Quadrus EZ, User Manual, Page: 326 / 366

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Quadrus EZ Reader User’s Manual
Data Matrix Symbology
Appendix H — Data Matrix Symbology
Data Matrix Symbol Comparisonl
Symbol Features ECC 000 - 140 ECC 200
Number of rows and columns
(including finder pattern) Odd (except for some
closed applications)
Even
Element in upper right hand corner
Dark (for light background
symbols) Light (for light background
symbols)
Error correction routine Convolution Reed-Solomon
Symbol sizes
(not including quiet zones) 17 to 21 sizes
(squares only) 24 squares
6 rectangular
Append in structured format No Yes, up to 16 symbols
Subdivide code word stream into
blocks for error detection
No
Yes, for symbols with more than
255 code words
Extended channel interpretation for
other character sets
No Yes, optional
Data encoded in:
Base 11, 27, 41, 37,
ASCII, 8-bit Byte ASCII, C40, text, X12, EDIFACT,
and Base 256
Individual element (or module)
Solid finder pattern on two sides define physical size, orientation
and symbol distortion
A white corner on a white background symbol
indicates an even number of elements per side, a
black corner indicates an odd number.
Alternating finder pattern
on two sides used to define cell structure
Even number of elements per side indicates an
ECC 200; an odd number indicates 000 to 140
(in most cases)