Printronix ThermaLine T5000r - Manual (Page 59)

Advanced Validator Options
59
Modulation
NOTE: This parameter factors into the Overall Grade (page 57).
Modulation measures how well the scan laser sees the wide
elements (bars or spaces) relative to the narrow elements. In
general, scanning lasers see bars better than spaces and wide
elements better than the narrow elements. This menu item sets the
value used by the validator for pass/fail threshold during the
analysis of bar codes. Higher values create a stricter criterion for
passing.
You can set the Modulation parameter to a percentage value from
0% to 100%. The default is 50%.
1. Press to take the printer offline and place the printer in
Menu mode.
2. If necessary, press
↓
and
↵
at the same time to unlock the
↵
key.
3. If necessary, press until VALIDATOR displays.
4. Press ↑ until Modulation displays.
5. Press + or – to scroll through the percentage values: 0% to
100%. The default is 50%.
6. Press
↵
to select the desired value.
7. Press
↓
and
↵
at the same time to lock the
↵
key, then press
PAUSE to take the printer offline.
8. Press PAUSE again to put the printer online.
EC Min
NOTE: This parameter factors into the Overall Grade (page 57).
The higher the value, the stricter the criterion for passing.
This menu item sets the minimum edge contrast, which is the worst
edge transition (bar to space or space to bar) used by the validator
for pass/fail threshold during the analysis of bar codes. Bar codes
with an edge contrast below this threshold will fail.
You can set the EC Min parameter to a percentage value from 0%
to 100%. The default is 15%.
1. Press to take the printer offline and place the printer in
Menu mode.
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