6 - 8 Symbol MiniScan MSXX07 Series Integration Guide

Symbol MS2207 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. Table 6-3 on page 6-9 and Table 6-4 on p age 6-11 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 Calculating the Usable Scan Length Method on page
2-8.

Symbol MS2207 1D Decode Zone

Figure 6-5
Symbol MS2207 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
510 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