Motorola MS4404, MS4407 HD/DPM Near Focus

Symbol MS4404/MS4407 Specifications 4 - 15
HD/DPM Near Focus
The decode zone for the Near Focus Symbol MS440X HD and DPM versions is shown in Figure 4-8. Typical
values are shown. Table 4-7 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 4-8 HD/DPM Near Focus Decode Zone
In.
cm 0
20 mil
Depth of Field
7.0
12345
02.5 10.2 7.6 10.2 12.7
13 mil (100% UPC)
4.5
5 mil
2.2
5.1
1.7 4.0
15 mil PDF417
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
3.8
3.0 7.6
7.6
*
*
* Minimum distance deter mined by symbol length and scan angle .
3.0
in.
Note: Typical performance at 73°F (23°C)
on high quality symbols in nor mal room light.
Vcc = 3.3V
6
15.2
7.5 mil
1.6 4.3
6.67 mil PDF417
2.0
3.6
10 mil PDF417
1.7*
4.0
MS440X
DPM
4 mil PDF417
2.4
3.2
7
17.8
8
20.3
1.5
3.8
1.5
NOTE The decode zone performance for DPM shown above is based on controlled conditions and is to be used
as a guide only. Decoding is affected by mark quality, type, surface, and grade as well as ambient lighting
conditions.