Symbol Technologies DS 3408 User Manual
Scanning
2-11
Toggled Focus
Figure 2-9. DS 3408 Toggled Focus Decode Zone
In.
cm
0
20 mil
Depth of Field
20.0
5
10
15
20
0
12.7
25.4
38.1
50.8
13 mil (100% UPC)
12.3
5 mil
0.8
14.5
2.0
6.0
15 mil PDF417
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
4
10.2
8
20.3
20.3
*
*
* Minimum distance determined by symbol length and scan angle.
8
10.2
in.
Note: Typical performance at 73˚F (23˚C)
on high quality symbols in normal room light.
Vcc = 3.3V
on high quality symbols in normal room light.
Vcc = 3.3V
7.5 mil
1.3
8.5
10 mil PDF417
1.8
8.8
4
6.67 mil PDF417
2.3
4.5
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