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Realization of the full depth of field for all bar codes given in the specification is based on the ability of the
decoding hardware to resolve a varying range of minimum element times. The minimum element time
calculation for a given bar code size at a given distance is shown in Equation 1 (below).
Minimum Element Time = (Element Size / Spot Speed)
Equation 1.
Example:
Bar code Size = 5.2 mil
Spot Speed @ 95 mm from face = 650 inches/second
Minimum Element Time = (0.0052 inches/ (650 inches/second)) = 8.0 µsec