Digital Scanning 2 - 15

DS3478-HD/DMP Smart Focus

Figure 2-13

DS3478-HD/DPM Smart Focus Decode Zone

In.
cm
0
20 mil
Depth of Field
15.0
5 10 15
0 12.7 25.4 38.1
13 mil (100% UPC)
10.7
5 mil
2.7
11.0
1.64 7.5
15 mil PDF417
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
25.1
410.2
10.2
*
*
* Minimum distance determined by symbol length and scan angle.
4
5.1
in.
Note: T ypical perf or mance at 73°F (23°C)
on high quality symbols in nor mal room light.
Vcc = 3.3V
7.5 mil
2.1
9.5
10 mil PDF417
*
9.5
2
Top of
scanner
6.67mil PDF417
2.5
7.6
20 mil Dot Peen (DPM Version Only)
1.4
5.3