Hand Held Products IT4X80, IT4800, IT4600, IT4710 Introduction, User Operation, Reading Techniques

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Introduction

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Introduction

Two-dimensional Print Quality Assessment (2D PQA), a feature of HHP's image readers, identifies a successfully read symbol and also reports graded mea- surement parameters obtained from the symbol.

2D PQA is not "true" verification in the traditional sense of the word; however it can easily and inexpensively provide test results that you may find useful for 2D bar code symbol print quality process control. This User's Guide explains how to activate HHP's 2D PQA analysis function, what is reported, how the data is measured, what the readings mean, and what you might do to improve your process.

User Operation

To utilize 2D PQA you need to have an IMAGETEAM™ 4600/4800/4X80 with firmware revision 1.135.1.1 or higher or an IMAGETEAM 4410/4710 with firm- ware revision 1.91.2.18 or higher..

Show Firmware

To see displayed results using the 2D PQA feature, Microsoft® Notepad, a word processor/editing program, or Quick*View is recommended. Refer to Chapter 2 for information regarding Quick*View.

Reading Techniques

Hand held movement, rotation, and location will affect the measured results. To obtain proper repeatable reads that yield useful print quality information, you should follow the techniques listed below.

•Lay the bar code symbol to be tested on a flat surface

•IT4600/4800/4X80: Hold the imager 7.0 in (17.8 cm) for SR models, 3.5 in (8.9 cm) for the HD, and 4.5 in (11.4 cm) for the SF from the bar code sym- bol. This distance is measured from the imager's front window to the read- ing surface.

•IT4410/4710: Hold the imager 5.0 in (12.7 cm) for LR models, 2.0 in (5.1 cm) for the HD, and 7.0 in (17.8 cm) for the LX from the bar code symbol. This distance is measured from the imager's front window to the reading surface.

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Contents Quick Check 2D Print Quality Assessment User’s GuideDisclaimer Table of Contents Chapter 1 - IntroductionChapter 3 - Customer Support Chapter 2 - Quick*ViewSymbology X-dimensionReading Techniques IntroductionUser Operation Symbology/Parameter Specifics Screening Report 2D PQA ReportingFull Report This is a representative PDF417 symbol PQA from HHP Identifying Symbol ContentA Data Safety Margin = 100% 0 Erasures & 0 Errors PDF417 11 rows x 3 cols, 25 data & 8 chks ECL = 2 X roughly =Excessive Print Shrinkage -43% of 2D Stacked / Multi-rowPDF417 where In Screening modes, this parameter is reported as Useful Row Height is Too Short 1.5X when that is the case 1 is the Encoded Message MicroPDF417Aztec Code 2D Matrix1 This is a representative Data Matrix symbol 2 PQA from HHP Data Matrix6 A Fixed Patterns 0 module errors 3 DATA MATRIX ECC200 24 x 24 modules in size1 This is a representative QR Code symbol 2 PQA from HHP QR Code7 A Data Safety Margin = 100% 4 lists this symbols Mask Pattern and Error Correction Level MaxiCodePostnet and Planet Code Postal Height-Modulated Bar Code Symbologies7 A Ok Bar Widths = 0.022 in 8 A Ok Inter-Bar Gaps = 0.023 in 1 B15AJ6T 2 PQA from HHP 4-State Codes3 4-STATEBritish 34 Bars, nominally from 38.5 to 42.3 mm. in Width 4 Bar Sequence ADHTATDAHDDAADADAADTHTADHHDATHTADHAverage Bar/Gap Width Parameter InterpretationAverage Bar Height/Extension Height Table 1 Dimensional Tolerances for the Various 4-State BarBar Sequence Data Safety MarginCodeword Data and Check Codeword YieldError Correction Level ECL Error Correction/Error Correction CharactersError Detection/Error Detection Characters Encoded MessageSymbology Module ErrorsPrint Growth Horizontal and Vertical Row HeightX-dimension Setting Up the Imager and the Quick*View Software Installing Quick*View from the WebQuick*View Quick*View Demonstration Software InstructionsIT4410/4710 Temporary Quick*View ConfigurationIT4600/4800/4X80 If Communication Cannot Be Established Using the Quick*View SoftwareScan Data Window Customer Support Obtaining Factory ServiceNorth America Latin AmericaAsia Technical AssistanceNorth America/Canada Page QC2DPQA-UG Rev B