69
Changing Thick Bar Determination Criteria
Optical and print characteristics may result in discrepancies in the thickness of black and white
bars, thereby preventing accurate ratios from being obtained during scanning. By checking the left
guard bar and central bar, the black and white bar discrepancies are obtained and incorporated into
the thick bar determination. Changing the position of the bars to be checked can enhance the
scanning accuracy of bar codes which contain some bars with anomalous ratios.
Depending on the bar code system, some codes may have left guard bars and center bars while
others may not. This change is effective for those codes which have the elements. The
symbologies on which this change is effective are listed below.
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EAN, JAN, UPC-A, UPC-B
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EAN, JAN, UPC-A, UPC-B Add-ons
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UPC-E
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UPC-E Add-on
Changing Calculation Method for Thick bar Determination
Optical and print characteristics may result in discrepancies in the thickness of black and white
bars, thereby preventing accurate ratios from being obtained during scanning. This means that
scanning may not be possible when the ratios of the black and white bars are not uniform. This
problem can be overcome by analyzing the black and white bars separately.
Depending on the bar code system, this method of analyzing the black and white codes separately
is effective for some symbologies but not for others. The symbologies on which this analysis
method is effective are listed below.
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EAN, JAN, UPC-A, UPC-B
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EAN, JAN, UPC-A, UPC-B Add-ons
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UPC-E
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UPC-E Add-on
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Code39
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NW7
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Code93
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Code128
Changing Noise Filter Threshold Values
A combination of laser module optical characteristics and barcode printing conditions can
generate noise within the bar code scanning data resulting in the inability to scan. This problem
can be dealt with by removing noise. This is achieved by identifying all data at or below a
prescribed threshold value as noise and removing it when detected by linking it to preceding and
subsequent data.
Содержание IT-800 Series
Страница 15: ...15 2 1 4 Keys Keyboard Layout The following is the keyboard layout employed in the terminal Figure 2 1 ...
Страница 91: ...91 QR Code Enable 0 Min 1 Max 3500 Aztec Enable 0 Min 1 Max 3750 TLCode39 Enable 0 Code 32 Enable 0 ...
Страница 173: ...173 Copyrights Tab This tab is for displaying the OS copyright information Figure 3 19 ...
Страница 179: ...179 Root Tab Figure 3 27 Root certificates authenticate certificates received from other hosts ...
Страница 195: ...195 About Tab This tab displays current version information of the imager setting tool Figure 3 46 ...
Страница 201: ...201 Date Tab This tab is for setting display format of date Figure 3 56 ...
Страница 213: ...213 3 29 Windows Update This applet is used to keep the integrated operating system up to date Figure 3 74 ...
Страница 216: ...216 3 32 Domain Enrollment This applet is used to enroll the terminal to your company network Figure 3 78 ...
Страница 247: ...247 4 2 Games The terminal comes with two games Solitaire and Bubble Breaker Figure 4 2 ...
Страница 248: ...248 4 3 ActiveSync This application is an ActiveSync client program for the terminal to communicate with PC Figure 4 3 ...
Страница 255: ...255 4 5 Calculator The application can be used to operate nine digit calculator Figure 4 11 ...
Страница 261: ...261 2 On the child terminal the following screen appears while the child terminal is receiving data Figure 4 17 ...
Страница 264: ...264 4 11 Getting Started This application displays shortcut menus for setting up the terminal Figure 4 21 ...