Rjs Inspector D4000 SP (FIRMWARE version A.06 and Late Instrukcja Użytkownika Pobierz pdf (Strona 65)

Operator’s Guide Appendix K

002-5572 RJS, Minneapolis, MN

Edge Contrast (EC) See Edge Contrast(min)

The difference between the space reflectance (Rs)

and adjoining bar reflectance (Rb).

EC = Rs - Rb

Edge Contrast (min)

This parameter grade can be “A” or “F.” Edge con-

trast is the Reflectance difference between adjoin-

ing bars and spaces. The minimum edge contrast

is the smallest value of EC = R space – R bar

found in the scan.

The grade is determined by calculating the edge

contrast of every element in a symbol and then

comparing the lowest value to a fixed threshold in

the specification (15%).

If the value is equal to or greater than the thresh-

old, the grade is “A.” If the value is less than the

threshold, the grade is “F.”

Element

A generic term used to refer to either a bar or

space in a bar code symbol.

Element Edge

The location where the scan reflectance profile in-

tersects the midpoint between the space reflec-

tance (R space) and bar reflectance (R bar) of ad-

joining elements. Visual measuring techniques will

generally locate the element edge closer to the

center of the bar.

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Rjs Inspector D4000 SP (FIRMWARE version A.06 and Late Instrukcja Użytkownika Strona 65