Hardware manual

Impact Reference Guide OCR
3-185 Datalogic Automation Inc.
Maximum Percent Size Change determines how much the read character’s size can change from the
trained character’s size.
OCR Train Modes
These train modes update the Font Library with characters found in the input string, based on the mode
selected.
• Add New
This mode adds any characters that are not recognized (new or different) in the input string to the Font
Library. For example, if there is an "N" in the input string that is slightly different from an "N" in the
Font Library, it is added to the Font Library with the same name. Totally new characters are also
added.
• Add New and Replace
This mode adds any characters that are not recognized (new or different) in the input string to the Font
Library and replaces any existing matching characters.
• Delete Library and Add
This mode deletes all the characters then adds any characters that are not recognized (new or different)
in the input string to the Font Library. This mode is the same as the Add New mode, except it deletes
the existing library before adding characters.
• Add All
This mode adds all the characters in the input string to the Font Library. The characters are added even
if they already exist in the Font Library.
• Add By Index
This mode lets you add specific characters to the library, regardless of whether they can be read or not.
You must also specify a value in Train Index or Train Index List. When you press the Train button, the
specified characters are added to the library. If the Train Index List is present, it is used. If it is not
present, the Train Index value is used. This mode is useful when you have characters that are margin-
ally readable and you don’t want to search for a truly unreadable example to use for training. Note that
the index starts with zero and spaces do not count as characters.
Dealing with undesired results:
• If the characters are broken into multiple bounding boxes, increase the "Minimum Spacing Between
Characters" parameter.