User guide

4 - 8 MC9500-K Mobile Computer User Guide
Imager Decode Ranges
The decode ranges provide the decode distances for bar codes of specified densities. Figure 4-8 shows the imager
decode ranges and Table 4-2 on page 4-9 lists the scan ranges for the 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.
Figure 4-8 MC9500-K Imager Decode Ranges
In.
cm
0
20 mil Code 39
24.2
510152025
0 12.7 25.4 38.1 50.8 63.5
13 mil (100% UPC)
14.2
1.1
15.0
15 mil PDF417
0
cm
0
4.5
11.4
9
22.9
22.9
*
*
9
11.4
in.
4.5
11.9
15 mil Data Matrix
2.3
9.6
10 mil PDF417
*
10.1
7.5 mil Code 39
*
6.67 mil PDF417
2.9
6.6
5 mil Code 39
1.6
7.0
Note: Typical performance at 73°F (23°C) on high
quality symbols in normal room light.
Depth of Field
* Minimum distance determined by symbol length and scan angle.
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