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Inspector Model D4000

Inspector Model D4000. Dual mode portable bar code verifier This presentation includes bar code basics. We design and manufacture the world's most complete line of bar code verification equipment. BAR CODES Are the World’s Least Expensive and Most Reliable Method of Entering Data.

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Inspector Model D4000

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  1. Inspector Model D4000 Dual mode portable bar code verifier This presentation includes bar code basics Leadership by Design

  2. We design and manufacture the world's most complete line of bar code verification equipment Leadership by Design

  3. BAR CODES Are the World’s Least Expensive and Most Reliable Method of Entering Data • Bar codes are increasingly being used in critical applications where there is no backup Leadership by Design

  4. Bar Code 101 • Two basic bar code variables • Light/dark • Narrow/wide • Five basic bar code parameters • Layout • Ratio or edge-edge • Element dimensions/deviations • Reflectance/print contrast • Spots and voids Leadership by Design

  5. Light / Dark • Virtually all bar codes are read using reflected and monochromatic light • Diffuse light is scattered randomly • Specular light does not scatter (mirror) • Scanners sense diffuse light • High & low reflectance differentiateselements - “bars and spaces” Leadership by Design

  6. Narrow / Wide • Elements are different widths • Ratio type codes contain two widths • Code 39, I 2 of 5, Codabar • Edge-edge codes contain four widths • Code 128, UPC, EAN, UCC/EAN 128 • Width of narrow element = X dimension Leadership by Design

  7. Layout 1 = human readable 2 = proper size quiet zone 3 = correct data encoded in symbol Leadership by Design

  8. Ratio 1 = narrow element width 2 = wide element width Ratio = avg. wide element width / avg. narrow element width 2:1 to 3.2:1 normal Leadership by Design

  9. Element Dimensions / Deviations 1 = narrow element 2 = wide element 3 = element width tolerance 4 = tolerance added to narrow element 5 = tolerance subtracted from wide element 4, 5 not easily recognized as narrow or wide Leadership by Design

  10. Reflectance / Print Contrast 1 = bar; Low reflectance 2 = space; High reflectance 3 = highest reflectance in symbol, L 4 = lowest reflectance in symbol; D Symbol contrast = L-D PCS = (L-D)/L Scanners must see a significant difference in reflectance for reliable performance Leadership by Design

  11. Spots and Voids 1 = bar with void inside 2 = space with spot inside 3 = signal distorted by void 4 = signal distorted by spot 5 = signal with no distortion Distorted signals can result in no read, poor read rate or data error Leadership by Design

  12. What Is Verification? A specification or parametric check of a bar code symbol Objective: predict or ensure readability Leadership by Design

  13. What Is Scanning? • Decoding bar codes Objective: dig data out of noise Leadership by Design

  14. Why Not Use A Scanner To Verify? • A scanner is designed to read “bad” codes • In open systems “bad” means different things (all designs are different) • Codes do not get better in shipment • The “better” the scanner you use, the less likely it is your customer will be able to read the code Leadership by Design

  15. What Types Of Verification Methods Are Available? Leadership by Design

  16. Verification Methods • Traditional method • ANSI method • Film master (N/A for D4000) • Data validation Leadership by Design

  17. Traditional Method • Objective; Determine how well the symbol is printed • No regard for scanner type • Micrometer, optical comparator history • Major parameters analyzed; • Avg. bar deviation • Print contrast signal • Absolute element widths (optional) Leadership by Design

  18. Traditional Method • Major applications; • Print setup • Less expensive portable models • Absolute measurements for high speed systems • Augmentation for explaining ANSI method grade values • On-line verification strategy Leadership by Design

  19. ANSI Method • Objective; Predict how well any type of scanner incorporating a particular optical configuration (aperture/wavelength) will read this symbol • Overall symbol grade is indicator • B/06/660 or 3.2/06/660 Leadership by Design

  20. ANSI Method All quality parameters derived from scan profile Lowest of parameter grades = overall symbol grade Leadership by Design

  21. ANSI Method • Most documented and traceable verification method • Quality parameters analyzed • Symbol contrast • Modulation • Defects • Decodability • Reference decode • Rmin/Rmax • Minimum edge contrast Leadership by Design

  22. ANSI Method Multiple scan averaging is recommended This provides more information on area of symbol Leadership by Design

  23. ANSI Method • Major applications; • Most compatible with symbols printed on flat surfaces • UPC/EAN and AIM specifications recommend it • Method of Choice for large ISO9000 companies (NIST Traceability) • Choice for compliance labeling • Excellent on-line evaluation process • Can detect any print method failure (traditional!) Leadership by Design

  24. Data Validation • Ensure proper data format • UCC/EAN AI formats • HIBC mod 43 check digit • Ensure data match for specific content • Destination on shipping label • Product ID Leadership by Design

  25. D4000 Modes of Operation • Laser mode • ANSI mode • Mode set by scanner type installed • The modes provide different types of analyses • The modes provide different types of pass/fail criteria Leadership by Design

  26. D4000 Laser Mode • Traditional parameters flag errors • Ave. bar deviation • Quiet zone • Ratio • ANSI Decodability can flag error • User programmable threshold (B - F) • Easy point and shoot Leadership by Design

  27. Laser Mode - CR1 Scanner More accurate analyses than original scanner Analyzes wide range of code size including high density codes with 5 mil (.127 mm) X dimension Leadership by Design

  28. Laser Mode - CR1 Scanner (Cont.) Scanning instructions on scanner Adjust scan distance so beam width is minimum of twice the width of bar code 2 inch (51 mm) minimum scan distance Leadership by Design

  29. D4000 ANSI Mode • ANSI overall symbol grade flags errors • Fail threshold user programmable (B-F) • Ensure proper aperture/wavelength is set • Calibration required for reflectance calculations • Traditional parameters used for reference • Avg. bar deviation is a trend indicator for Decodability Leadership by Design

  30. D4000 ANSI MODE (Cont.) Manual scanning Scan 8 - 12 IPS (smooth) Begin and end scan outside of quiet zone Multiple scan average desired Scan in both directions Leadership by Design

  31. D4000 Data Validation • Mandatory modulo check digits • Code 128, UCC/EAN 128, UPC/EAN • UCC/EAN data format checks • UCC/EAN AI format checks • Comparison mode (laser mode only) Leadership by Design

  32. D4000 Operation HintsEnter & Select Keys • Press ENTER and SELECT at any time simultaneously to enter main menu • Except when actively calibrating or printing a scan profile (ANSI mode) • Press SELECT to move cursor or change a choice • Press ENTER to enable that selection • You may scan at any time in any place in the main menu Leadership by Design

  33. D4000 Operation HintsAnalysis Screens • Initial screen indicates pass/fail analysis and decoded data • Press SELECT to scroll data • LEDs indicate avg. bar deviation • Individual screens accessible for detailed analysis information • Press ENTER to access detailed screens • First screen accessed is “remembered” • Press ENTER to return to initial screen Leadership by Design

  34. D4000 Operation HintsStorage Buffer • % Full displayed when storage enabled • Buffer cleared by pressing ENTER with cursor on % full message Leadership by Design

  35. D4000 Operation HintsANSI Mode Interpretations • Ref decode = F on multiple scan average analysis indicates at least one scan failed ref decode (A-F averaged in multiple scan analysis grade) • Large (> 35%) defect calculation may indicate a bad quiet zone • Decodability set to 00% in a single scan indicates a global threshold failure Leadership by Design

  36. World Leader in Quality Assurance and Data Validation of Printed Symbols Leadership by Design

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