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SE-923 Scan Engine Integration Guide
Decode Zone
The decode zone for the SE-923-I000A scan engine is shown in Figure 3-2. The figures shown
are guaranted values. Table 3-2 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. The maximum usable length of a symbol at
any given range is shown below. To calculate this distance, refer to the formula on the
following page.
Note: Guaranted performance at 73.4°F (23°C)
on high quality symbols.
SE 923
5 mil
5.0
2.2
7.5 mil
1.8
10 mil
2.0
2.0
*
in.
0
5
cm
0
12.7
*Minimum distance determined by symbol length and scan angle
Figure 3-2. SE-923-I000A Standard Version Decode Zone
3-4
7.5
9.7
100% UPC
12
20 mil
15
40 mil
55 mil
15
10
38.1
25.4
Depth of Field
22
20
25
50.8
63.5
in.
cm
15
38.1
10
25.4
5
12.7
0
0
5
12.7
10
25.4
15
38.1
29
30
76.2
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