Hardware manual
Character Contour Match Impact Reference Guide
Datalogic Automation Inc. 3-164
How to set up the Data Matrix tool
1. Snap a good image of the desired Data Matrix symbol, then click the Setup tab.
2. Click the ROI & Pass/Fail radio button. Move and size the ROI so it surrounds the data matrix symbol.
The ROI should include the entire symbol, but not extend too far beyond the symbol, as shown here.
The symbol should have a quiet zone around it equal in width to the module size.
3. The Found Module Points and Symbol Boundary are displayed on the image. The decoded Symbol
Type and size are displayed in the Symbol Type area. The grey level threshold is adjusted automati-
Output Name What it is
Symbol String The decoded data matrix symbol.
Successful Read If True, the data matrix has been read and decoded successfully. If the
Verify String is present, this also indicates that the matrix and verify
string match.
Found Modules A point list which displays the modules (dots) of the symbol read
Symbol Boundary A quadrilateral which shows the boundary of the found symbol
Symbol Height Number of modules along the shorter dimension
Symbol Width Number of modules along the longer dimension
Structured Append
Position
The symbol’s position in the structured append (see “How the Data
Matrix tool works” on page 3-165)
Structured Append
Length
The length of the structured append – the number of symbols to append
(see “How the Data Matrix tool works” on page 3-165)
Structured Append
File ID
The file id is used to distinguish symbols from different structured
append files (see “How the Data Matrix tool works” on page 3-165)
Byte Errors A list of errors indicating symbol or location quality. See “Byte Errors” on
page 3-166.
Sampling Resolu-
tion Used
If this property value is 1, the tool’s first full resolution scan read suc-
cessfully. If the value is 2, the second, half resolution scan, read suc-
cessfully.
Threshold Used The threshold value used when the tool ran
ROI
Found Module Points
Symbol Boundary