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• Too fast, too slow, too variable
• Practice scanning smoothly, with little pressure on the wand.
• Practice scanning the symbol, outside of Quiet Zone to outside of
Quiet Zone in about one-half second.
Scanner Missing, Scanner Disabled
• The software is unable to detect the presence of a wand.
• Make sure the verification input device is turned on.
• Check batteries in input unit.
• Check cable connections.
• Check wand connections.
• Check COM port settings (under “Configuration” Icon or Menu).
Frequently Asked Questions
A bar code is a way of representing data using bars, both dark bars and light
bars (spaces). The rules governing the exact method of using bars and spaces
to represent data is called a symbology. A printed pattern that encodes data is
called a symbol.
There are literally hundreds of bar code symbologies in existence but only a
handful are in common use today. Quick Check
®
PC is designed to verify all
commonlyused bar codes.
Symbologies supported by Quick Check
®
PC:
• Codabar
• Code 39
• Code 128
• Interleaved 2-of-5 (ITF)
• UPC/EAN (and addendums)
All bar codes have the same basic elements even if they look very different. The
illustration that follows shows the basic components of a bar code symbol for
Code 39 (upper) and U.P.C. (lower).
The illustration shows:
• A left-hand Quiet Zone
• A Start Character or Pattern
• Encoded data
• A Stop Character or Pattern
• A right-hand Quiet Zone
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