Motorola MSXX07 ユーザーズマニュアル
7 - 8
Symbol MiniScan MSXX07 Series Integration Guide
Symbol MS2207VHD 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 appear.
ratio and edge acurity. Typical values appear.
and
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 appears below. To calculate this distance, see
width in mils of the narrowest element (bar or space) in the symbol. The maximum usable length of a symbol at any
given range appears below. To calculate this distance, see
.
Symbol MS2207VHD 1D Decode Zone
Figure 7-5
Symbol MS2207VHD 1D Slab/Raster Decode Distances
In.
cm
0
7.5 mil
55 mil
15.0
Depth of Field
5.25
Note: Typical performance at 68˚F (20˚C)
on high quality symbols in normal room light.
Vcc = 5V
on high quality symbols in normal room light.
Vcc = 5V
2.5
5
7.5
10
12.5
0
12.7
25.4
38.1
50.8
63.5
5 mil
4.75
4 mil
4.1
2.0
3.4
15
76.2
6 mil
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
1.75
1.5
*
* Minimum distance determined by symbol length and scan angle.
MS 220XVHD