Decode Zones
Standard Near Focus
The decode zone for the Near Focus Symbol MS440X is shown in
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.
Note: Typical performance at 73°F (23°C)
on high quality symbols in normal room light.
Vcc = 5.0 Vdc
MS440X
2.2
2.0
*
*
0
In.
cm
0
5.1
* Minimum distance determined by symbol length and scan angle.
Standard Near Focus Decode Zone
Figure 4-6
5 mil
2.7
5.5
6.67 mil PDF417
3.0
7.5 mil
10 mil PDF417
3.0
13 mil (100% UPC)
15 mil PDF417
7.0
20 mil
2
4
6
8
10.2
15.2
20.3
Depth of Field
Symbol MS4404/MS4407 Specifications 4 - 11
Figure
4-6. Typical values are shown.
cm
in.
3.5
8.9
W
i
d
t
1.75
4.4
h
o
0
0
f
F
i
1.75 4.4
e
l
d
3.5 8.9
9.5
10
25.4
Table 4-5