IBM 4400 manual Bar Codes Readable Data

Chapter 7 Bar Codes

Readable Data

The optional readable data field provides a readable interpretation of the bar code data. It can be printed above or below the bar code symbol.

Check Digit

The modulo-103 check digit is automatically calculated and inserted in the bar code symbol. The check digit verifies accurate scanning. The start code is included in the check digit algorithm.

NOTE: Access for the alternate set of control function characters is by using SO (Shift Out, hex 0E). The SO control code identifies the next character as the control function character, and must be inserted before each alternate character required. The SO character is selectable from the printer's front panel (refer to your User’s Guide).

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