iChapter 1 - IntroductionUser Operation...................................................................... 1-1Reading Techniques.............................................................. 1-1Symbology/Parameter Specifics........................................... 1-22D PQA Reporting ............................................................... 1-3Full Report ..................................................................... 1-3Screening Report............................................................ 1-3Identifying Symbol Content........................................... 1-42D Stacked / Multi-row ........................................................ 1-5PDF417 .......................................................................... 1-5MicroPDF417................................................................. 1-82D Matrix.............................................................................. 1-9Aztec Code ..................................................................... 1-9Data Matrix .................................................................. 1-10QR Code....................................................................... 1-11MaxiCode..................................................................... 1-12Postal (Height-Modulated) Bar Code Symbologies ........... 1-13Postnet and Planet Code............................................... 1-134-State Codes ...................................................................... 1-15Parameter Interpretation ..................................................... 1-16Average Bar/Gap Width............................................... 1-16Average (Bar) Height/Extension Height...................... 1-16Bar Sequence................................................................ 1-17Codeword (Data and Check)........................................ 1-17Codeword Yield ........................................................... 1-17Data Safety Margin ...................................................... 1-17Edge Accuracy ............................................................. 1-17Encoded Message......................................................... 1-18Error Correction/Error Correction Characters ............. 1-18Error Correction Level (ECL)...................................... 1-18Error Detection/Error Detection Characters................. 1-18Mask Pattern/Masking ................................................. 1-18Module Errors .............................................................. 1-19Print Growth (Horizontal and Vertical) ....................... 1-19Row Height .................................................................. 1-19Table of Contents