Printronix t8000 Administrator's Manual page 134

This option is added to be compatible with a special IGP-X00 customization.
Usually, if Interleaved 2/5 bar codes have an odd number of digits, a leading
zero is inserted in front of the data. However, this special IGP-X00
customization gives you the option of adding a space character at the end of
the bar code instead.
Leading Zero
Trailing Space
X2 DPD
Modulo 7 CD
Factory Default
This menu makes the old method of decoding C39 alternative character set
compatible with the new.
Disable
Enable
Factory Default
This option allows you to ignore the user-defined barcode ratio and replace it
with the default ratio (X1).
Disable
Enable
Factory Default
134
Application > PGL Setup > I-2/5 Selection
A leading zero is inserted in front of the data.
A space is inserted at the end of the data instead of a
leading zero.
When selected, I-2/5 bar code with a magnification X2
will use the specially configured ratios 3:3:6:5 rather
than 3:6:9:12 for compatibility issues.
The I-2/5 bar code uses a modulo 7 check digit instead
of the default modulo 10 check digit.
Leading Zero
Application > PGL Setup > C39 Compatbl.
Uses the proper way of decoding.
Matches the old legacy IGP-100 method of decoding.
Disable
Application > PGL Setup > User-Def Ratio
The user-defined barcode ratio will be replaced with
the default ratio (X1).
This option allows you to ignore the user-defined
barcode ratio and replace it with the default ratio (X1).
Enable