38 | APPENDIX E: DECODE ZONES
Appendix E
Decode Zones
The decode zones for the Class 1 and Class 2 lasers in the In-Hand Scan
Card are shown below. The minimum element width (“X Dimension” or bar
code “size”) is the width in thousandths of an inch (mils) of the narrowest
element (bar or space) in the symbol. The figures shown are the typical
scanning distances (depths of field) for selected bar code sizes. The
maximum usable length of a bar code symbol (Width of Field) at any given
range is also shown below.
Class 1 Laser Decode Zone
