5-28 Chapter 5: Programming
Minimum Characters
The Minimum Characters Allowed parameter defines how many characters in a bar code must
be read the same by two separate scans before determining a valid read has occurred. This
option should be set to the number of characters in a typical tag which ensures that the scanner
reads typical tags with at least two complete good scans before sending the tag data to the host
terminal.
There are 14 selections for this parameter option (2 through 15 characters). Scan the proper
Hex tag (Hex 2 through Hex F). The default is 8 characters.
Note: 10 = Hex A, 11 = Hex B, 12 = Hex C...
Full ASCII
Code 39 permits full ASCII capability by encoding the additional characters. Disable this
function by scanning the Hex 0 tag, and scan the Hex 1 tag to enable this function.
In this mode, the presence of a special character before an upper-case letter denotes that the
character is lower-case.
Check Digit Present
The Check Digit Present parameter determines if the bar code must contain a correct check
digit to be identified as valid. If this function is enabled, the bar code is ignored if a check digit
is not present. Scan the Hex 0 tag to disable this option, or the Hex 1 tag to enable it.
Transmit Check Digit
The Transmit Check Digit parameter selects whether to send the check digit to the host
terminal. Scan the Hex 0 tag to disable this option, or the Hex 1 tag to enable this option.
Allow 1- or 2-Character Tags
The Allow One- or Two-Character Tags parameter selects whether or not to permit the scanner
to read a 1- or 2-character Code 39 label. If the host terminal software does not require that the
scanner read a 1- or 2-character Code 39 label, scan the Hex 0 tag to disable this option. If the
host terminal software requires this capability, scan the Hex 1 tag to enable it.
Code 39 Tone
This parameter permits you to enable or disable the Code 39 tone. Scan Hex 0 to disable the
tone (default) or Hex 1 to enable it. If disabled, the Code 39 tone is under control of the UPC
tone control (general good read tone).
Tone Length
The Tone Length parameter permits you to set the length of the Code 39 tone. Set this
parameter by scanning the appropriate Hex tag (Hex 0 to Hex F). Each Hex tag is incremented
by 15 milliseconds. For example, Hex 0 = 0 ms, Hex 1 = 15 ms, Hex 2 = 30 ms, Hex 3 = 45
ms, and so forth. The default Code 39 Tone Length is 75 ms (Hex 5).
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