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While the details are explained below, this general format includes:
• the encoded data (the usual output message) in the first line.
• a banner " >>> PQA from HHP <<<" identifying the start of the 2D PQA
report.
• the symbology, its features, and approximate size.
• graded print quality parameters in the following lines.
In the 2D PQA Screening mode with "A" as the Minimum Acceptable Grade, this
same scan would be accompanied by a triple beep and the following output
message:
This is a representative PDF417 symbol
>>> PQA from HHP <<<
Minimum Acceptable Grade = A
PDF417: X roughly = 0.014"
Poor Edge Accuracy (59%)
Excessive Print Shrinkage (-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-row
This section describes 2D PQA outputs for PDF417 and MicroPDF417, as well
as their derivative 2D arrays used in UCC/EAN Composite Components and
T-Linked Code 39.
PDF417
The Full Report from a typical scan looks like the following (line numbers have
been added in curly brackets):
{1} This is a representative PDF417 symbol
{2} >>> PQA from HHP <<<
{3} PDF417: 11 rows x 3 cols, 25 data & 8 chks (ECL = 2)
{4} X roughly = 0.014"