
Appendix A — Specifications
CN50 Mobile Computer for Windows Mobile 6.1 User’s Manual 87
EA21 Minimum Reading Distances
EA21 Area Imager Typical Reading Distances
Typical distances are measured in an office environment (250 lux).
Symbology Density Minimum Distance Maximum Distance
Code 39 0.15 mm (6.0 mil)
0.25 mm (10.0 mil)
0.5 mm (20.0 mil)
1.0 mm (40.0 mil)
12.0 cm (4.7 in)
5.0 cm (2.0 in)
5.0 cm (2.0 in)
9.0 cm (3.5 in)
18.0 cm (7.1 in)
30.0 cm (11.8 in)
60 cm (23.6 in)
95 cm (37.4 in)
UPC/EAN 100% 0.33 mm (13.0 mil) 5 cm (2 in) 38.0 cm (15.0 in)
Data Matrix 0.25 mm (10.0 mil)
0.38 mm (15.0 mil)
12 cm (4.7 in)
8.0 cm (3.15 in)
22 cm (8.7 in)
34 cm (13.4 in)
PDF417 0.25 mm (10 mil)
0.38 mm (15 mil)
7 cm (2.75 in)
7 cm (2.75 in)
28 cm (11.0 in)
40 cm (15.75 in)
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