User's Guide

MC3000 User Guide2-20
Imaging
The imager version of the mobile computer has the following features:
• Omnidirectional reading of a variety of bar code symbologies, including the most popular linear, postal, PDF417 and 2-D
matrix code types.
• The ability to capture and download images to a host for a variety of imaging applications.
• Advanced intuitive laser aiming for easy point-and-shoot operation.
Imager
The imager uses digital camera technology to take a digital picture of a bar code, the image is stored in memory and software
decoding algorithms are executed to extract the data from the image. A typical bar code decoding process is as follows:
1. Aim the mobile computer at a bar code and press the scan button or trigger.
2. The red laser aiming pattern turns on to assist in aiming the mobile computer.
3. The mobile computer turns on the secondary white LEDs to illuminate the target bar code.
4. The mobile computer takes a digital picture (image) of the bar code and stores it in memory for decoding. A beep sounds to
indicate that the bar code was properly decoded.
5. Release the scan button.
This process usually occurs instantaneously. Steps 2 - 4 are repeated on poor or difficult bar codes as long as the scan button remains
active.
Operational Modes
The imager version of the mobile computer has two modes of operation: Decode Mode and Image Capture Mode. Refer to the Symbol
Application Guide for the Series 3000 Demo imager application.
Table 2-7. MC3000-G/R, Laser Decode Ranges
Bar Code
Density
Ranges
Near Far
5.0 mil 2.0 in
5.08 cm
4.9 in
12.45 cm
7.5 mil 1.6 in
4.06 cm
7.9 in
20.07 cm
10 mil 1.2 in
3.05 cm
10.8 in
67.95cm
UPC A 1.3 in
3.30 cm
12.7 in
32.26 cm
20 mil 1.4 in
3.56 cm
17.9 in
45.47 cm
40 mil 2.4 in
6.10 cm
26.4 in
67.06 cm
55 mil 3.4 in
8.64 cm
30.6 in
77.72 cm