Datalogic Scanning I GD4100 - Manual (Page 203)

Code 128
Product Reference Guide 201
Code 128 — cont.
Code 128 Set Length 2 — cont.
ENTER/EXIT PROGRAMMING MODE
Select Code 128 Length 2 Setting
Make a mistake? Scan the CANCEL barcode to abort and
not save the entry string. You can then start again at the
beginning.
CANCEL
DEFAULT 80 = Length 2 is 80 Characters