Intermec SE1223, User Manual

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SECTION 3 Scanner Specifications
3-12 SE 1223 Scanner User’s Guide
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.
Table 3-8
SE 1223 Standard Scanner Decode Distances
Typical Guaranteed
Symbol Density Minimum Maximum Minimum Maximum
In. mm In. cm In. cm In. cm In. cm
0.010 0.254 9 22.86 22 55.88 12 30.48 18 45.72
0.015 0.381 7.5 19.05 39 99.06 9 22.86 34 86.36
0.020 0.508 7 17.78 44 111.76 9 22.86 39 99.06
0.040 1.01 10 25.4 90 228.6 10 25.4 80 203.2
0.055 1.04 10 25.4 100 254.0 10 25.4 90 228.6
0.070* 1.79 60 152.4 180 457.2 70 177.8 162 411.48
0.100* 2.54 66 167.64 240 609.6 84 213.36 210 533.4
* 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:
L = 1.8 x (D + d) x Tan (A/2)