Rjs Inspector D4000 Auto Optic (FIRMWARE version A.06 Bedienungsanleitung PDF herunterladen (Seite 52)

Appendix D Operator’s Guide

RJS, Minneapolis, MN 002-5564

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, an Overall Symbol

Grade of F will result. The Defects calculation will be the

cause of the F grade and typically be a value greater

than 50%.

Symbols should be scanned in both directions since the

RJS Inspector D4000 is designed to be bi-directional.

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

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Rjs Inspector D4000 Auto Optic (FIRMWARE version A.06 Bedienungsanleitung Seite 52