RJS Inspector D4000 - Page 81

Operator’s Guide Appendix K
002-5564 RJS, Minneapolis, MN
75
Atlanta, GA 30348-5115
Threshold (Global Threshold)
See Global Threshold)
Transmission Mode
The mode where light is transmitted through a film
master symbol rather than reflected from a printed
symbol.
Truncation
Decreasing the length of the bars in a bar code
symbol below the normal specification. Truncation
decreases a symbol’s omni-directional readability
and should be avoided.
Valley
The graphical pattern on a scan reflectance profile
which looks like a “U” or “V.” Within a profile a valley
represents a bar. One or more valleys could also be
found within an element representing a reflectance
change within an element.
Vertical Redundancy
The availability of more than one scan path through a
bar code symbol.
Visual Measurement
Measurements obtained by using human vision in the
determination of characteristics of the bar code
symbol.