Symbol MK2000 MicroKiosk, Product Reference Manual

Page: 29 / 194

1-13
MK2000 Introduction
Scanning Composite (2D) Bar Codes
A composite bar code is a combination of a standard bar code (RSS, UPC/EAN or UPC/
EAN-128) and a 2-D bar code (CC-A, CC-B or CC-C).
When scanning a composite bar code:
• Keep the scan pattern parallel to the 2D symbol’s rows.
• Hold the bar coded item at an angle which does not cause specular reflection (see
Specular Reflection on page 1-14).
• Hold the bar code close for small bar codes and farther away for large bar codes.
• When using the single scan line pattern, aim the scan line at the middle of the 2-D
portion. The scan pattern will open up to an optimized Raster pattern and decode
both the 2-D and standard bar code portion of the composite code.
Figure 1-8. Composite Scanning
Aim the single scan line at the center of
the 2D portion
Raster pattern will expand to decode
both portions