Symbol MiniScan MS XX07 Series, Руководство по интеграции

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6-9
MS 2207 Specifications
MS 2207 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.
Table 6-3 on
page 6-10 and Table 6-4 on page 6-12 list 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. The maximum usable length of a
symbol at any given range is shown below. To calculate this distance, see
Calculating the
Usable Scan Length Method on page 2-11.
MS 2207 1D Decode Zone
Figure 6-5. MS 2207 1D Decode Distances
In.
cm
0
40 mil Minimum Element Width
55 mil Minimum Element Width
31.0
Depth of Field
24.0
Note: Typical performance at 68˚F (20˚C)
on high quality symbols in normal room light.
Vcc = 5V
5
10 15 20 25
0 12.7 25.4 38.1 50.8 63.5
7.5 mil
19.0
6 mil
1.5 7.0
2.0 5.25
30
76.2
35
88.9
20 mil Minimum Element Width
0
In. cm
W
i
d
t
h
o
f
F
i
e
l
d
0
2.5
5
7.5
2.5
5
7.5
5.1
10.1
15.2
5.1
10.1
15.2
10 25.4
10 25.4
MS 220X
*
* Minimum distance determined by symbol length and scan angle.
14.0
13 mil Minimum Element Width