NCR 7870 manual Code, Minimum Characters Allowed

Chapter 7: Programming 7-25

Bar Codes – 2

The Bar Codes 2 programming mode contains programming parameters for Code 39.

Defaults

Parameter	Default Value
Code 39	Disable
Minimum Characters Allowed	8
Full ASCII	Disable
Check Digit Present	Disable
Transmit Check Digit	Disable
Allow 1-or-2 Character Tags	Disable

Specific Program Parameters

Code 39

The Code 39 parameter controls reading Code 39 bar codes. Disable reading Code 39 bar codes by scanning the Hex 0 tag and enable reading by scanning the Hex 1 tag. The default is to disable reading.

If you choose to disable reading Code 39 bar codes, there are no other entries allowed for this parameter. However, if you enable reading Code 39 bar codes, you can program the rest of the parameters.

Minimum Characters Allowed

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. You should set this option to the number of characters in a typical tag. This ensures that the scanner/scale reads typical tags with at least two complete good scans before sending the tag data to the host terminal.