
Operator
’s Guide
Appendix A
002-7858
RJS, Minneapolis, MN
27
Appendix A (Scanning Technique)
The D4000 Laser bar code verifier utilizes the CR3 Laser which has two major improvements when
compared to the previous models:
Codes with an X dimensions as small as 5 mils (0.005 inch, 0.127 mm) can be analyzed (vs.
0.0075 inch, 0.190 mm).
More accurate correlation to the ISO/ANSI Decodability calculation is achieved.
Scanning Technique
Lay the symbol to be scanned on a flat, non-reflective surface
While the laser beam is not over a bar code pull the trigger on the Laser
Adjust the angle and distance of the Laser to the bar code sample so that the distance results in
a laser beam that is twice as wide as the bar code (at least 2 inches wide) and the angle is at 30
degrees (angle of the exit window on the Laser)
Once at the proper angle and distance, drag the laser beam over the bar code (maintaining the
angle and distance)
Figure A-1 (Scanning Position)
Note:
A label containing this information is also attached to the
top of the scanner for quick reference.
Special Considerations
When scanning codes on a low contrast substrate like corrugated material or a specular substrate
(such as shiny aluminum or plastic material), a scan angle other than 30 degrees may produce
better decoding characteristics. Contact RJS Technical support if scanning problems occur.