HandHeld Entertainment Quick Check PC600 - Manual (Page 35)

Context Sensitive Help
Context-sensitive Help
none
Select context-sensitive Help then click on different areas of the screen for an
explanation.
Admittedly, humans should be allowed to have only so much fun so at some
point you will need to exit Quick Check
® PC.
Exit
File, Exit
[Alt], [F4]
You will be asked whether you really want to exit Quick Check ® PC. A pop-up
screen will ask whether you really want to exit Quick Check ® PC. The default
response is “Yes.” Click the “Yes” box or hit the “Enter” key to exit. Click the
“No” box if you selected “Exit” by mistake.
Understanding Print Quality Results
The first published document concerning the issue of printed bar code quality
was during the development of the Uniform Code Council (UCC) Universal
Product Code (U.P.C.) Symbol Specifications and U.P.C. Verification manuals.
Quality parameters for checking the quality of bar codes in the original U.P.C.
print quality requirement had to do with:
•
Did the bar code meet the required format structure?
•
Did it have the right characters in the right positions?
•
Did it have the correct number of encoded characters?
•
Did the background and bar contrast (color) or reflectance meet the
correct criteria for a bar code scanner to "see" the bar code? (At that
time, scanners were primarily based on helium neon lasers which "sees"
everything as if it had red glasses on.)
•
Did the widths of the bars and spaces meet the industry specifications?
•
Were the quiet zones wide enough?
•
Was the height of the bar code correct?
These measures were based on easily-obtainable measures: physical tolerances
and reflectance. Although they provided some measure of quality control, they
did not adequately predict whether a symbol would scan at point-of-use.
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