User's Manual
applied.
For the two symbologies that have optional check digits – Code39 and Interleave 2 of 5, the decoder will always
transmit the check digit if the verification is disabled:
Verify Check Digit Return Check Digit Description
Disabled
Enabled or Disabled Check digit is not verified but is transmitted
Enabled Disabled Check digit is verified but is not transmitted
Enabled Enabled Check digit is verified and is transmitted
SystemInformation
User can set up sleep time between 1 and 10 seconds. Please set up correct date and time before using the
KDC200 for the first time, after replacing the battery or after resetting the device.
User can check the memory and battery status in the system menu. The installed firmware version and device
serial number can also be verified in the system menu.
MiscellaneousBarcodeInformation
How tall should a linear barcode symbol be?
Industry standards suggest a height of either 6.5mm or 15% of the symbol length, whichever is greater. Symbols
of lesser than recommended heights may cause recognition problems.
Should I use check characters?
Yes, we recommend the use of check-characters in barcodes. Operating without check-characters is not safe and
will lead to errors that are costly to correct. Using check-characters positively effects data integrity especially
when character density is at the limits and/or image quality is not at it's best.
Prevents Interleave 2 of 5 Partial Reading
A partial scan of an Interleave 2 of 5 symbol may decode and cause incorrect data to be read. To prevent partial
scans on long symbols, user should include bearer bars. These are bars that run along the top and bottom edges
of the symbol in the scanning direction. If a partial scan of the symbol occurs, the scanning beam will hit the
bearer bar and will not decode. The bearer bar must touch the top and bottom of all the bars and must be at least
3X wide.
Another solution for the short scanning problem is to fix all Interleave 2 of 5 symbols to a set number of digits.
Zeros can be used to pad the data to the set number of digits. The application program would then be set to only