Motorola DS3478 - Manual (Page 44)

2 - 14 Symbol DS3478 Product Reference Guide
DS3478-HD/DPM Far Focus
Figure 2-12 DS3478-HD/DPM Far 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
3.0 11.0
4.0 7.5
15 mil PDF417
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
2 5.1
4 10.2
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
3.2 9.5
10 mil PDF417
4.3 9.5
2
Top of
scanner
6.67mil PDF417
4.5 7.6
20 mil Dot Peen (DPM Version Only)
2.6 5.3