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6 - 8
Symbol MiniScan MSXX04 Series Integration Guide
Symbol MS2204VHD Decode Zones
The decode zone is a function of various symbol characteristics including density, print contrast, wide to narrow
ratio and edge acurity. Typical values are shown.
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. The maximum usable length of a symbol at any
given range is shown below. To calculate this distance, see
2-8.
Symbol MS2204VHD 1D Decode Zone
Note: Typical performance at 68˚F (20˚C)
on high quality symbols in normal room light.
Vcc = 5V
MS 2204VHD
2.0
1.75
1.5
*
0
In.
cm
0
* Minimum distance determined by symbol length and scan angle.
Symbol MS2204VHD 1D Slab/Raster Decode Distances
Figure 6-5
4 mil
3.4
5 mil
4.1
6 mil
4.75
7.5 mil
5.25
55 mil
2.5
5
7.5
12.7
25.4
38.1
50.8
Depth of Field
Table 6-3 on page 6-9
and
Calculating the Usable Scan Length Methodon page
15.0
10
12.5
15
63.5
76.2
Table 6-4 on page 6-11
list the typical
In.
cm
W
10 25.4
i
d
7.5
15.2
t
5
10.1
h
2.5
5.1
o
0
0
f
2.5
5.1
F
5
10.1
i
e
7.5
15.2
l
25.4
10
d
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