Cleaning Instructions

Specifications
228
SE4720 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.
SE4770 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.
13 mil
100% UPC
012345678905
80% MRD
1.6 in
4.06 cm
27.0 in
68.58 cm
15 mil
Code 128
1234
80% MRD
1.0 in
2.54 cm
Note 3
29.5 in
74.93 cm
20 mil
Code 39
123
80% MRD
1.4 in
3.56 cm
Note 3
52.0 in
132.08 cm
55 mil
Code 39
CD
80% MRD
31.4 in
8.64 cm
Note 3
100.0 in
254.0 cm
100 mil
Code 39
123456
80% MRD
2.0 ft
60.96 cm
Note 3
17 ft
518.16 cm
NOTE: Contrast is measured as Mean Reflective Difference (MRD) at 650 nm.
Working range specifications at temperature = 23°C, pitch=18°, roll=0°, skew=0°, photographic quality, ambient light ~150
ft-c, humidity 45-70% RH.
Dependent upon width of barcode.
Distances measured from front edge of scan engine chassis.
Table 36 SE965 Decode Distances (Continued)
Symbol Density/
Barcode Type
Barcode Content/ Contrast
Note 1
Typical Working Ranges
Near Far
Table 37 SE4720 Decode Distances
Symbol Density/ Barcode Type
Typical Working Ranges
Near Far
NOTE: Photographic quality barcode at 18° pitch angle under 0.1 fcd ambient illumination.
Dependent upon width of barcode.