RJS Inspector D4000 SP (FIRMWARE version A.06 and Later) - Manual (Page 70)

Appendix K Operator
’s Guide
RJS, Minneapolis, MN 002-5572
Module
The narrowest expected bar or space width.
Moving Beam Scanner
A laser device that dynamically searches for a bar
code pattern by sweeping a moving optical
beam through a field of view.
N (wide to narrow ratio)
In symbologies with two element widths, the wide to
narrow ratio of elements is calculated by summing
the average wide bar width and average wide
space width and dividing the sum by 2 times Z. In-
ter-character gaps, if applicable, are not included.
N = (avg.wide bar + avg. wide space) / (2*Z)
Nanometer (nm)
A unit of measure used to define the wavelength of
light, equal to 10-9 meter.
Nominal
The intended value for a specific parameter. Tol-
erances are generally specified as positive and
negative deviations from this value.
No-Read (Non-read, Non-scan)
The absence of data at the scanner output after an
attempted scan because of no code, defective
code or operator error.
Nominal Size
The target size for a specific element or group of
elements.
Numeric
A character set that contains only numbers.
Omni-directional