Casio DT-X8 Series Software Manual page 39

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4. Minimum digit on NW7 symbology
The no. of minimum digits can be set to one digit only when scanning NW7 symbology is
enabled.
5. Minimum digit on Interleaved 2of5 symbology
The no. of minimum digits can be set to two digits only when scanning Interleaved 2of5
symbology is enabled.
6. Minimum and maximum digits on IATA symbology
The no. of minimum digits can be set to 15 digits or 17 digits for the maximum only when the
IATA check digit calculation is set to "Coupon number and Calculate data segment" or
"Calculate just data segment".
7. The maximum digit count for just numeric data is 74 digits, or the maximum digit count for
just alphabet data is 41 digits.
8. Each no. of maximum digits in the table is defined by optimum condition affected by various
factors including bar code printed quality, resolution, PCS, sun light, distance between the
terminal and bar code to scan, etc. Depending on the condition of these factors, you may fail to
read a bar code even if you set maximum digits in the table for that bar code symbology.
9. Setting the no. of minimum digits to 1 may result in higher error rate. Unless you need to
change it to 1, leave the default (= 4) unchanged.
10. Code128 check digit can be set as disable, but generally please set enable. If you need to scan
Code 128 without check digit by special reason, at this time only set this setting as enable. But
when you set this setting as enable, there is possibility to misreading by barcode printed quality
or reading condition, therefore please use this setting after check scanning operation carefully.
Check Digit Calculation
A bar code value is calculated in accordance with method, and then the calculation result and the
check character at a specific position are compared. If they match each other, the scanning data is
deemed correct. The calculation method differs according to each symbology.
Readable Digits
The actual readable digit on a bard code differs depending on the resolution and the scanning
distance between the terminal and the bar code.
39

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