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SE4400 Integration Guide
SE4400-E004E
Near Focus
Figure 3-5
shows the decode zone for the Near Focus SE4400-E004E. Typical values
appear.
Table 3-6
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.
Note: Typical performance at 73°F (23°C)
on high quality symbols in normal room light.
Vcc = 3.3V
SE4400-
E004E
*
*
1
0
In.
cm
0
2.5
* Minimum distance determined by symbol length and scan angle.
Figure 3-5. SE4400-E004E Near Focus Decode Zone
3-14
4 mil PDF417
2.9
5 mil
2.2
6.67 mil PDF417
2.5
7.5 mil
2.1
10 mil PDF417
2.2
13 mil (100% UPC)
2.4
15 mil PDF417
20 mil
3
2
4
10.2
7.6
10.2
Depth of Field
4.5
5.0
6
5
7
15.2
17.8
12.7
in.
cm
3.0
7.6
1.5
3.8
0
0
1.5
3.8
3.0 7.6
7.5
8
20.3
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