Nominal; Nominal Size; Parameter; Percent Decode - Intermec SE1223 User Manual

SECTION 1 General Information

Nominal

The exact (or ideal) intended value for a specified parame-
ter. Tolerances are specified as positive and negative devi-
ations from this value.

Nominal Size

Standard size for a bar code symbol. Most UPC/EAN codes
can be used over a range of magnifications (e.g., from 0.80
to 2.00 of nominal).

Parameter

A variable that can have different values assigned to it.

Percent Decode

The average probability that a single scan of a bar code
would result in a successful decode. In a well-designed bar
code scanning system, the probability should approach
100%.

Print Contrast Signal (PCS)

Measurement of the contrast (brightness difference) be-
tween the bars and spaces of a symbol. A minimum PCS
value is needed for a bar code symbol to be scannable. PCS
= (R -- R ) /R , where R is the reflectance factor of the
L D L L
background and R the reflectance factor of the dark bars.
D

Programming Mode

The state in which a scanner is configured for parameter
values.
SE 1223 Scanner User's Guide 1-9