Motorola LS4208 - Manual (Page 31)

Scanning 2 - 7
The scanner can be tilted up to 65 ° forward or back and achieve a successful decode ( Figure 2-8 ). Simple practice
quickly shows what tolerances to work within.
Figure 2-8 Maximum Tilt Angles and Dead Zone
Scanning PDF Symbols
For optimal scanning performance, use rastering mode to scan PDF417 symbols. Adjust the raster to cover the
entire PDF symbol. For large PDF symbols, you may need to manually raster the scanner in order to cover the
entire symbol.
If the pattern does not cover the top and bottom of a PDF symbol, pull the scanner back until it does. Make sure the
scan pattern extends beyond the edges of the bar code.
Figure 2-9 Raster Pattern Expanded Over PDF417 Symbol
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 to the top.
Alternatively, move the scanner further away from the bar code until the scan pattern covers a larger portion of the
bar code in the vertical direction.
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