User's Manual Part 1

Chapter 1 — Using the Computer
CN3 Mobile Computer User’s Manual - PRELIMINARY 5
When the CN3 Computer successfully reads a bar code label, a high
beep is emitted and the Scan LED lights briefly.
3 Release the Scan button.
If you have problems scanning a bar code with the 2D imager, try following
some of these tips to improve the performance of your imager:
• Change to another predefined imager mode:
• Select 1D if only 1D labels are needed.
• Select 1D and 2D Bright Environment if scanning in high ambient
light (such as outdoors in sunshine).
• Select 1D and 2D Reflective Surface if scanning glossy labels.
• Select 1D and 2D Standard for all other cases.
• Keep your hand as steady as possible while scanning a label.
• Position the imager as close to the bar code as possible while still being
able to capture the entire bar code.
• Enable only the bar codes that you need to use every day.
Below are the minimum reading distances for CN3 Computers using the
2D area imager. When correctly mounted, an exit window reduces reading
distances by about 4%.
Use Intermec Settings to configure these imager commands. For more
information on the commands and their parameters, see the Intermec Com-
puter Command Reference Manual (P/N: 073529) available from the Inter-
mec web site at www.intermec.com.
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”
Datamatrix 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/ 3.26”
11.33 cm/ 4.46”
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”
Good Scan LED