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MicroPDF417
The Full Report from a typical scan looks like the following (line numbers have
been added in curly brackets):
{1} This is a typical Micro PDF417 symbol
{2}
>>> PQA from Hand Held Products <<<
{3} MICROPDF: 15 rows x 3 cols, 24 data & 21 chks
{4} X roughly = 0.015"
{5} [A] < Row Height = 1.8 X
{6} [A] < Data Safety Margin = 100% (0 Erasures & 0
Errors)
{7} [A] < 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 approximate and based upon use of the
4410LR 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 than true
X-dimension. Please contact Hand Held Products Application Support for
additional information. Refer to
{5} lists the average Row Height, assigning the grades as:
A
if Row Height >= 1.5 X,
F
otherwise.
{6} lists the Data Safety Margin. Because MicroPDF's error correction level is
fixed, this parameter is just the "Unused Error Correction" and always
between 0 and 100%.
{7} lists the Edge Accuracymeasured in multiple scans through the Row
Address Patterns.
{8} lists the Print Growth measured within the Row Address Patterns.
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Chapter 3
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