This option should be used primarily in a clean environment, since it is more susceptible to damage.īarcode products generate images according to the pixels of the target device thereby creating an image difference. By selecting this option, the right hand side of the symbol is removed or truncated. A truncated PDF417 symbol uses less area than the normal PDF417 barcode.Some scanners and decoders cannot dependably read over 20 columns. Truncated PDF417 contains only two row start columns. The normal PDF417 barcode symbol has two row start columns and two row stop columns. Keep in mind when selecting columns, only the number of data columns in the symbol are being selected. However, the PDF417 barcode symbol is limited to 30 columns and 90 rows. The number of rows and columns can be selected, allowing the symbol to be created in various forms.When creating symbols with more than 10 columns, IDAutomation recommends using a ratio of 1:4 or 1:5. Most scanners, such as the IDAutomation PDF417 2D USB Scanner, read PDF417 barcodes well at 1:3. By lowering the ratio, a significant amount of space can be saved however, some scanners cannot read X to Y ratios of less than 1:3. The PDF417 barcode is usually printed at an X to Y ratio of 1:2 to 1:5, with 1:3 being the most popular. The Y dimension is the height of each row within the PDF417 symbol. The X dimension is the width of the narrowest bar in a printed codeword.
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