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In rare instances where neither a valid Start nor Stop pattern is measurable, yet
the symbol is somehow read, lines {8} and {9} are replaced by a message to
that effect. The message is either:
"[F] < Start/Stop Decode Fails" in a Full Report
or
"Start/Stop Characters are Bad" in a Screening mode.
In Screening modes, it often occurs that none of the parameters are below the
Minimum Acceptable grade. In this case, the final PQA line becomes:
"All Measurements within range".
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 HHP <<<
{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
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 than
true X-dimension. Please contact HHP Application Support for additional
information. Refer to Chapter 3 for contact information.
{5} lists the average Row Height, assigning the grades as: