Decode Zones
The decode zones for the laser scanners are shown in
values.
Table 4-2
lists the typical 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.
4 mil
1.00
5 mil
1.30
1.70
1.70
1.70
1.70
2.00
*
0
0
12.7
* Minimum distance determined by symbol length and scan angle.
MC9500-K Laser Scanner 35° Decode Zone
Figure 4-3
5.00
7.50
7.5 mil
12.50
10 mil
17.50
100% UPC
15 mil
20 mil
40 mil
55 mil
5
10
15
20
25.4
38.1
50.8
Depth of Field
Figure 4-3
and
Figure
4-4. The figures shown are typical
15
10
5
0
5
12.7
10
15
23.50
24.50
25.50
27.50
31.50
30
35
25
76.2
88.9
63.5
Data Capture
38.1
W
31.6
i
d
t
12.7
h
o
0
f
F
i
e
l
d
25.4
38.1
4 - 3