Rice Lake Motorola DS457 Laser Scanner - Manual (Page 54)

4 - 6 DS457 Fixed Mount Imager Integration Guide
Decode Zones
DS457-SR/DL
Figure 4-4
shows the decode zone for the DS457-SR/DL. Typical values appear.
Table 4-3
lists the typical and
guaranteed distances for selected bar code densities. The minimum element width (or “symbol density”) is the
width in mils of the narrowest element (bar or space) in the symbol.
Figure 4-4 DS457-SR/DL Decode Zone - 1D and Data Matrix Symbols
In.
cm
0
20 mil Code 39
Depth of Field
16.5
4 8 12 16 20
0 10.2 20.3 30.5 40.6 50.8
13 mil (100% UPC)
1.5 15.3
0
W
i
d
t
h
o
f
F
i
e
l
d
0
10 25.4
20 50.8
50.8 20
25.4
in.
Note: Typical performance at 73˚F (23˚C)
on high quality symbols.
DS457-SR/DL
10
10.9
15 mil Data Matrix
8.4
10 mil Data Matrix
5 mil Code 39
1.3 8.1
7.5 mil Data Matrix
2.0 6.0
1.5
1.6
1.8
cm