Motorola MS4407 用户手册
Symbol MS4404/MS4407 Specifications 4 - 11
Decode Zones
Standard Near Focus
The decode zone for the Near Focus Symbol MS440X is shown in
. Typical values are shown.
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.
density”) is the width in mils of the narrowest element (bar or space) in the symbol.
Figure 4-6
Standard Near Focus Decode Zone
In.
cm
0
20 mil
Depth of Field
9.5
2
4
6
8
10
0
5.1
10.2
15.2
20.3
25.4
13 mil (100% UPC)
7.0
5 mil
2.0
7.0
2.7
5.5
15 mil PDF417
0
cm
W
i
d
t
h
o
f
F
i
e
l
d
0
1.75 4.4
3.5
8.9
8.9
*
*
* Minimum distance determined by symbol length and scan angle.
1.75
3.5
4.4
in.
Note: Typical performance at 73°F (23°C)
on high quality symbols in normal room light.
Vcc = 5.0 Vdc
on high quality symbols in normal room light.
Vcc = 5.0 Vdc
7.5 mil
2.2
6.0
6.67 mil PDF417
3.0
5.25
10 mil PDF417
3.0
6.0
MS440X