Hand Held Products IT4410, User Manual

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{5} [A] < Row Height = 3.1 X
{6} [A] < Useful Row Height = 2.5 X (82% Row)
{7} [A] < Data Safety Margin = 100% (0 Erasures & 0
Errors)
{8} [B] < Edge Accuracy = 59%
{9} [C] < Print Growth = -43% of X
where:
{1} is always the Encoded Message, the usual data output. In this case "This
is a representative PDF417 symbol".
{2} is a standard Banner heading that marks the start of the PQA portion of the
output.
{3} identifies the Symbology , PDF417 (or its derivative COMPOSITE-C), and
lists other characteristics of this symbol: the height and width of the data
field, the numbers of data and check characters, and the corresponding
Error Correction Level.
{4} presents an approximate X-dimension , presuming normal viewing dis-
tance.
In the Screening PQA modes, the Symbology Identification from Line {3} is com-
bined with the approximate X-dimension from Line {4}.
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:
A if Row Height >= 2.5 X
F otherwise
In Screening modes, this parameter is reported as "Rows are Too Short (2.2X)"
when that is the case.
{6} lists the Useful Row Height , which is the measured Row Height times the
codeword yield (listed in parentheses), the percentage of symbol characters
scanned that actually decode. The grade is assigned as:
A if Useful Height >= 2.0 X, else
B if Useful Height >= 1.6 X, else
C if Useful Height >= 1.3 X, else