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™

Quick Check 2D Print

Quality Assessment

Applies to the following products:

IT4410, IT4710, IT4600, IT4800, IT4X80

User’s Guide

Содержание IT4410

Страница 1: ... Quick Check 2D Print Quality Assessment Applies to the following products IT4410 IT4710 IT4600 IT4800 IT4X80 User s Guide ...

Страница 2: ...tment on the part of HHP HHP shall not be liable for technical or editorial errors or omissions contained herein nor for incidental or consequential damages resulting from the furnishing performance or use of this material This document contains proprietary information which is protected by copyright All rights are reserved No part of this document may be photocopied reproduced or translated into ...

Страница 3: ...de Symbologies 1 13 Postnet and Planet Code 1 13 4 State Codes 1 15 Parameter Interpretation 1 16 Average Bar Gap Width 1 16 Average Bar Height Extension Height 1 16 Bar Sequence 1 17 Codeword Data and Check 1 17 Codeword Yield 1 17 Data Safety Margin 1 17 Edge Accuracy 1 17 Encoded Message 1 18 Error Correction Error Correction Characters 1 18 Error Correction Level ECL 1 18 Error Detection Error...

Страница 4: ...w Demonstration Software Instructions 2 1 Setting Up the Imager and the Quick View Software 2 1 Installing Quick View from the Web 2 1 Temporary Quick View Configuration 2 2 Using the Quick View Software 2 3 Chapter 3 Customer Support Obtaining Factory Service 3 1 Technical Assistance 3 2 ...

Страница 5: ...th firm ware revision 1 91 2 18 or higher 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 y...

Страница 6: ...cation of the overall symbol quality When you use 2D PQA under the above conditions you can expect meaningful and repeatable results that can be used to make correction adjustments in your symbol generation process Symbology Parameter Specifics Two dimensional bar code symbologies come in three distinct varieties or basic structures 1 Stacked or Multi Row symbologies e g PDF417 and MicroPDF47 2 2D...

Страница 7: ... identify ing information as well as only those measurements that are below Minimum Acceptable Grade MAG level With the IT4600 4800 4X80 if all of the param eters are met in the screening mode only the bar code data will be output with a beep If one or more of the measured parameters fail to meet the MAG the PQA message is also sent with a beep Note With the IT4410 4710 screening mode outputs are ...

Страница 8: ...h relate directly to the print or creation process and that also remain relatively consistent over a range of hand held reading situations In the 2D PQA Full Report mode successful scans of a 2D symbol output a message similar to the following with slight variations based upon the symbol ogy being tested This is a representative PDF417 symbol PQA from HHP PDF417 11 rows x 3 cols 25 data 8 chks ECL...

Страница 9: ...inkage 43 of X With C as the Minimum Acceptable Grade this same scan would produce just a single beep and the following output message This is a representative PDF417 symbol PQA from HHP Minimum Acceptable Grade C PDF417 X roughly 0 014 All Measurements within range The actual details of the symbol identifying and print quality parameters are explained in the following sections 2D Stacked Multi ro...

Страница 10: ... dimension is approximate and based upon use of the IT4410LR at 4 7 in 12 cm see Reading Techniques on page 1 1 If you use different image engines the X dimension will vary If you hold the reader closer than 4 7 in 12 cm it will have the effect of reporting a larger than true X dimension Conversely if you hold the reader farther away than 4 7 in 12 cm it will have the effect of reporting a smaller...

Страница 11: ...ing modes this parameter is reported as Low Data Safety Margin 44 when that is the case 8 lists the Edge Accuracy measured in the Start or Stop patterns The grade is assigned as A if Edge Accuracy 62 else B if Edge Accuracy 50 else C if Edge Accuracy 37 else D if Edge Accuracy 25 else F otherwise In Screening modes this parameter is reported as Poor Edge Accuracy 59 when that is the case 9 lists t...

Страница 12: ...Edge Accuracy 70 8 A Print Growth 4 of X where 1 is the Encoded Message 2 is the Banner heading 3 identifies the Symbology MICROPDF or one of its derivatives COMPOS ITE A COMPOSITE B or TLC39 and lists other characteristics of this symbol the height and width and the numbers of data and check or error correction characters 4 presents an approximate X dimension Note The reported X dimension is appr...

Страница 13: ...de The Full Report from a typical scan looks like the following line numbers have been added in curly brackets 1 This is a representative Aztec Code symbol 2 PQA from HHP 3 AZTEC CODE 3 layers Compact 23x23 modules 4 Data Field 29 data 22 chks in GF 256 0 Erasures 0 Errors 5 X roughly 0 021 6 A Core Symbol 0 errors 7 A Data Safety Margin 146 8 A Horizontal Print Growth 1 of X 9 A Vertical Print Gr...

Страница 14: ...this parameter is reported as Too many Code Symbol Errors 3 when that is the case 7 lists the Data Safety Margin In Aztec Code symbols the recommended number of error correction words is a minimum that is generally exceeded because any excess codeword capacity is filled with extra check words Thus this parameter often exceeds 100 but it also can be forced to much higher or lower levels by user opt...

Страница 15: ... HHP Application Support for additional information Refer to Chapter 3 for contact information 6 lists the number of Module Errors in the Fixed Patterns which consist of the Finder L and Clocking tracks around the perimeter of the symbol their adjacent quiet zones and any interior alignment patterns in larger ECC200 symbols In Screening modes this parameter is reported as Too many Fixed Pattern Er...

Страница 16: ...ge 1 1 If you use different image engines the X dimension will vary If you hold the reader closer than 4 7 in 12 cm it will have the effect of reporting a larger than true X dimension Conversely if you hold the reader farther away than 4 7 in 12 cm it will have the effect of reporting a smaller than true X dimension Please contact HHP Application Support for additional information Refer to Chapter...

Страница 17: ...fer to Chapter 3 for contact information 5 lists the Data Safety Margin Because the Error Correction level for Maxi Code is fixed for each mode this parameter is just the Unused Error Cor rection and is always between 0 and 100 6 and 7 list the Horizontal Vertical Print Growths respectively Postal Height Modulated Bar Code Symbologies This section describes the height modulated 2 state symbologies...

Страница 18: ...therwise Note These forgiving grade assignments employed throughout the postal symbologies reflect what are generally tight and unforgiving print specifications In Screening modes this parameter is reported as Tall Bars are too Short or Long 0 xxx in when that is the case 6 lists the Average Height of the short bars specified to fall within 0 040 to 0 060 in In Screening modes this parameter is re...

Страница 19: ...llowed range of mea sured width 4 lists the Bar Sequence A representing Ascending bars D representing Descending bars T representing Tracker short bars and H represent ing tall bars that both ascend and descend 5 lists the Average Extension from the centerline of the tall ascenders and descenders as specified in Table 1 In Screening modes this parameter is reported as Tall Bar Extensions are too S...

Страница 20: ...ugh techniques such as undercutting or by making the symbol larger Average Bar Height Extension Height Average Height Extension Height is a measure of the average height of the bars or dark elements in a symbol Depending on the symbology and print process this can be corrected by graphically stretching the symbol for 2D stacked sym bols see Row Height on page 1 19 and Useful Row Height on page 1 1...

Страница 21: ...ows in a 2D stacked symbology A low Codeword Yield can indicate print conditions where this interference is caused by drag streaking or other situations where there is carry over of ink from one row to another see Useful Row Height on page 1 19 Data Safety Margin Data Safety Margin is the ratio of the unused error correction codewords to the recommended number of error correction codewords A low D...

Страница 22: ...f characters used in a symbology for the purpose of error correction Higher levels of error correction allow for correcting greater potential symbol damage Error Detection Error Detection Characters Error Detection is the use of error correction characters symbol characters that are reserved for error detection and calculated automatically from the other symbol characters to detect whether the pre...

Страница 23: ...l areas of correction include adjusting the print process e g ink flow transfer heat print speed adjusting the original bar code symbol graphic or pattern through techniques such as undercutting or by making the symbol larger Row Height Row Height is an approximate measure of the average height of the elements in a row which indicates growth or shrinkage of the element widths In 2D stacked symbolo...

Страница 24: ...y or correcting the print condition e g turning down the thermal burn set ting or adjusting inking that causes rows to interfere X dimension The X dimension is an approximate measure of the average width of the narrow elements in a 2D stacked bar code symbol or a single element or module in a 2D matrix symbol and indicates growth or shrinkage of the element widths ...

Страница 25: ...s com port 2 Insert the SDK CD Load Quick View from the CD For Microsoft Windows 95 or NT 4 0 3 Insert the Quick View diskette labelled 32 Bit Release into Drive A or B 4 From the Start Menu click on Run Type x setup in the command line box where x represents a drive letter typically A for the 3 5 floppy drive on most PCs Click on OK 5 Follow the instructions in the setup screens 6 To start the Qu...

Страница 26: ...ew Configuration For a quick download communication configuration scan the appropriate Quick View bar code and the imager will be temporarily configured for Quick View settings Note If you have a unit capable of keyboard wedge mode scan the bar code below The unit will communicate in RS 232 mode allowing it to work with Quick View through an appropriate serial cable To convert the imager back to k...

Страница 27: ...s to com 1 as the communications port If you have plugged the Imager into another com port you must Cancel out of this message Click on File Preferences This popup appears Click on the radio button for the appropriate com port then click on OK Quick View should now be able to locate the Imager You may also need to pull the Imager s trigger to establish communications between the PC and the Imager ...

Страница 28: ...ter the font in this window by using the Font button or clear all data in the window with the Clear button If you wish to see the mnemonic for any embedded control characters you should put a check in the checkbox for Expand Control Chars the default setting If you wish to see the ASCII control character rather than the mnemonic turn off this checkbox Note The ASCII control character that is displ...

Страница 29: ...product North America HHP Corporate Offices Telephone 800 782 4263 Option 3 Fax 704 566 9904 E mail ProductService HHP com Latin America HHP Latin America Telephone 941 263 7600 Fax 941 263 9689 Brazil HHP Brazil Telephone 55 21 2494 7060 Fax 55 21 2494 5033 E mail suporte HHP com br Europe Middle East and Africa HHP Europe Telephone 31 0 40 29 01 633 Fax 31 0 40 2901631 E mail EuroService HHP com...

Страница 30: ...ephone 315 685 2476 Option 4 8 a m to 6 p m EST or in the U S 800 782 4263 Fax number 315 685 4960 E mail support HHP com Europe Middle East and Africa Telephone European Ofc Int 31 0 40 29 01 600 U K Ofc Int 44 1925 240055 E mail euro_support HHP com Asia Telephone Int 852 2511 3050 or 2511 3132 E mail asia_support HHP com Latin America Telephone 239 263 7600 E mail la_support HHP com ...

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Страница 32: ...QC2DPQA UG Rev B ...

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