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Scanner Specifications
SE 1223 Long Range (LR) Scanner
Decode Zone
The SE 1223 LR scanner decodes the symbols as described
in Table 3-8. The numbers shown are typical values as well
as guaranteed values. The minimum element width (or
symbol density) is the width in mils of the narrowest ele-
ment (bar or space) in the symbol.
SE 1223 Standard Scanner Decode Distances
Symbol Density
In.
mm
0.010
0.254 9
0.015
0.381 7.5
0.020
0.508 7
0.040
1.01
0.055
1.04
0.070*
1.79
0.100*
2.54
* Reflective symbol.
The decode zone is a function of various symbol characteris-
tics including density, print contrast, wide-to-narrow ratio,
and edge acuity. Width of decode zone at any given distance
must be considered when designing a system.
Usable scan length is calculated as follows:
3-12
SE 1223 Scanner User's Guide
Table 3-8
Typical
Minimum
Maximum
In.
cm
In.
22.86
22
19.05
39
17.78
44
10
25.4
90
10
25.4
100
60
152.4
180
66
167.64
240
L = 1.8 x (D + d) x Tan (A/2)
Guaranteed
Minimum
cm
In.
cm
55.88
12
30.48
99.06
9
22.86
111.76
9
22.86
228.6
10
25.4
254.0
10
25.4
457.2
70
177.8
609.6
84
213.36
SECTION 3
Maximum
In.
cm
18
45.72
34
86.36
39
99.06
80
203.2
90
228.6
162
411.48
210
533.4
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