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Chapter 1 - Introduction
User Operation...................................................................... 1-1
Reading Techniques.............................................................. 1-1
Symbology/Parameter Specifics........................................... 1-2
2D PQA Reporting ............................................................... 1-3
Full Report ..................................................................... 1-3
Screening Report............................................................ 1-3
Identifying Symbol Content........................................... 1-4
2D Stacked / Multi-row ........................................................ 1-5
PDF417 .......................................................................... 1-5
MicroPDF417................................................................. 1-8
2D Matrix.............................................................................. 1-9
Aztec Code..................................................................... 1-9
Data Matrix .................................................................. 1-10
QR Code....................................................................... 1-11
MaxiCode..................................................................... 1-12
Postal (Height-Modulated) Bar Code 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 Detection Characters................. 1-18
Mask Pattern/Masking ................................................. 1-18
Module Errors .............................................................. 1-19
Print Growth (Horizontal and Vertical) ....................... 1-19
Row Height .................................................................. 1-19
Table of Contents