PDT 7200 Series Product Reference Guide
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The PDF417 bar code symbol has multiple rows, but the raster pattern also has
multiple scanning rows. For this reason, as you scan:
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Center the aiming pattern on the bar code, as illustrated in
•
Keep the pattern in the same horizontal plane as the bar code.
3/4"
Figure 4-4. Orienting Scanning Pattern On PDF417 Bar Code
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If the vertical scan pattern is not high enough to cover a "tall" PDF417 symbol,
move the scanner slowly down toward the bottom of the symbol, keeping the
beam horizontal to the rows, and then slowly back upward toward the top
(Figure
4-5).
Figure 4-5. Moving Scan Pattern Upward and Downward on "Tall" PDF Symbol
4-12
Figure
4-3.
3/4"