Specifications
200
SE4770-SR Decode Zones
The table below lists the typical distances for selected bar code densities.
SE4850-ER Decode Zone
The table below lists the typical distances for selected barcode densities. The minimum element width (or
“symbol density”) is the width in mils of the narrowest element (bar or space) in the symbol.
Table 29 SE4770-SR Decode Distances
Symbology
Typical Working Range
Near Far
3 mil Code 39 2.8 in.
7.11 cm
5.8 in.
14.73 cm
5 mil Code 128 2.3 in.
5.84 cm
9.8 in.
24.89 cm
5 mil PDF417 3.0 in.
7.62 cm
7.9 in.
20.06 cm
6.67 mil PDF 417 2.2 in.
5.58 cm
10.1 in.
25.65 cm
10 mil DataMatrix 2.4 in.
6.09 cm
11.0 in.
27.94 cm
100% UPCA 1.6 in.
4.06 cm
24.9 in.
63.24 cm
15 mil Code 128 2.4 in.
6.09* cm
27.8 in.
70.61 cm
20 mil Code 39 1.6 in.
4.06 cm
36.1 in.
91.69 cm
20 mil QR 1.1 in.
2.79 cm
17.5 in.
44.45 cm
* Limited by width of bar code in field of view. See SE4770 Integration Guide for details.
Photographic quality bar code at 18° tilt pitch angle under 30 fcd ambient illumination. Distances
measured from front edge of scan engine chassis.
Table 30 SE4850-ER Decode Distances
Symbol Density/ Barcode Type
Typical Working Ranges @20 Ft-Cd Minimum
Near Far
10 mil Code 39 5.0 in. *
12.7 cm *
62.0 in.
157.48 cm
13 100% UPC 7.0 in.
17.78 cm
77.0 in.
195.58 cm
15 mil Code 128 10.0 in. *
25.4 cm *
86.0 in.
218.44 cm
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