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Chapter 3 — Configuring the Computer
42 751G Color Mobile Computer User’s Manual
Reading Distances
Typical reading distances are done in an office environment using office
lights (4 lux). Minimum distances are measured in the dark (0 lux). Both
reading distances are provided in respective scan engine integration guides.
Contact your Intermec representative for more information.
The minimum standard reading distances for 751Gs built with integrated
scan engines are shown below. When correctly mounted, an exit window
reduces reading distances by about 4%.
2D Area Imager Reading Distances with 0.04" Setbacks
Symbology Density Near Distance Far Distance
MaxiCode 35 mil 4.98 cm/ 1.96" 33.92 cm/ 12.96"
Data Matrix 15 mil 9.30 cm/ 3.66" 16.41 cm/ 6.46"
PDF417 10 mil
8 mil
6.6 mil
7.77 cm/ 3.06"
8.28 cm/ 3.26"
11.33 cm/ 4.46"
22.76 cm/ 8.96"
20.22 cm/ 7.96"
15.77 cm/ 6.21"
Code 39 15 mil
10 mil
8 mil
5.23 cm/ 2.06"
8.03 cm/ 3.16"
8.79 cm/ 3.46"
29.87 cm/ 11.76"
23.27 cm/ 9.16"
19.20 cm/ 7.56"
UPC 13 mil 6.25 cm/ 2.46" 31.65 cm/ 12.46"
EA11 Standard Minimum Reading Distances with 0.04” Setbacks
Symbology Density Minimum Distance Maximum Distance
Code 39 0.125 mm/ 5 mil
0.20 mm/ 8 mil
0.25 mm/ 10 mil
0.50 mm/ 20 mil
7.26 cm/ 2.86"
3.96 cm/ 1.56"
3.45 cm/ 1.36"
4.98 cm/ 1.96"
12.09 cm/ 4.76"
20.98 cm/ 8.26"
25.04 cm/ 9.86"
40.28 cm/ 15.86"
UPC/EAN 0.33 mm/ 13 mil 4.98 cm/ 1.96" 29.92 cm/ 11.66"
Datamatrix 0.191 mm/ 7.5mil
0.254 mm/ 10 mil
0.381 mm/ 15 mil
3.71 cm/ 2.46"
5.98 cm/ 1.96"
*
16.41 cm/ 6.46"
20.73 cm/ 8.16"
27.58 cm/ 10.86"
PDF417 0.168 mm/ 6.6 mil
0.254 mm/ 10 mil
0.381 mm/ 15 mil
6.25 cm/ 2.46"
4.47 cm/ 1.76"
4.98 cm/ 1.96"
13.87 cm/ 5.46"
21.74 cm/ 8.56"
33.43 cm/ 13.16"
* Minimum distance depends on symbology length and scan angle.