RJS Inspector D4000 SP (FIRMWARE version A.06 and Later) - Manual (Page 45)

Operator
’s Guide
Appendix D
002-5572 RJS, Minneapolis, MN 37
Appendix D (Quiet Zone Analysis)
Quiet Zone Analysis
The RJS Inspector D4000 trims data gathered during a
scan to approximately 10 times the X dimension on
each side of a bar code for all symbologies except
UPC and EAN. The areas are assumed to be quiet
zones and are included in the symbol analysis. If a low
reflectance object is detected in these areas the
screen displays:
Std I2of5
Warning QZ/SS
Quiet Zone Analysis for UPC and EAN symbols are
described in the following tables. In cases where an
addendum is included in the bar code, an addendum
gap analysis is also performed.
Table D-1 (Acceptable Parameters for Symbols
Without Addendums)
Symbology Leading QZ Trailing QZ
UPC-A 9X Minimum 9X Minimum
UPC-E 9X Minimum 7X Minimum
EAN-13 11X Minimum 7X Minimum
EAN-8 7X Minimum 7X Minimum
Table D-2 (Acceptable Parameters for Symbols With
Addendums)
Symbology Leading QZ Trailing QZ GAP Size
UPC-A 9X Minimum 5X Minimum 9 - 12X
UPC-3 9X Minimum 5X Minimum 9 - 12X
EAN-13 11X Minimum 5X Minimum 7 - 10X
EAN-8 7X Minimum 5X Minimum 7 - 10X