Motorola Symbol SE4400, Руководство по интеграции

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3-10
SE4400 Integration Guide
Toggled Focus
Figure 3-4 shows the decode zone for the Toggled Focus SE4400-E000E. Typical values
appear. Table 3-4 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 3-4. SE4400-E000E Toggled Focus Decode Zone
In.
cm
0
20 mil
Depth of Field
21.5
5
10 15 20 25
0 12.7 25.4
38.1
50.8 63.5
13 mil (100% UPC)
13.75
5 mil
2.25
16
3.5
7.5
15 mil PDF417
*
*
* Minimum distance determined by symbol length and scan angle.
Note: Typical performance at 73˚F (23˚C)
on high quality symbols in normal room light.
Vcc = 3.3V
7.5 mil
2.75 10
10 mil PDF417
3.25 10.25
SE 4400
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
4
10.2
8 20.3
20.3 8
10.2
in.
4
6.67 mil PDF417
3.75 6.0