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WILLETT 430 - Page 124

WILLETT 430
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System Software: Calibrate Menu
Issue 2
107
Part No. 306-0430-102
Modulation Set Level The modulation voltage can be set manually to achieve
optimum jet breakup. Opens the
Machine Control
dialogue.
The
Modulation set value
can be adjusted between 1 and
99.
Auto Modulate This option automatically sets the modulation voltage to
achieve optimum jet breakup. Ensure that Rolling Phase is
enabled when performing an Auto Modulate.
Phase Charge Set
Opens the
Phasing
menu. The
Phase Charge
value can be
adjusted between 0 and 255. This value should normally be
set to 8 ±1 and is the value of Phase Profile shown in the
Diagnostics screen
. The distance the phase detector is
from the jet can affect the value required for good phasing;
the distance should be approximately 1 mm.
Phase Offset Set
Opens the
Phasing
menu. The
Phase Offset
value can be
adjusted between 0 and 15. The Phase Offset should
normally be set to the standard value of 9.
Manual Phase
Opens the
Phasing
menu. The
Manual Phase Angle
value
can be adjusted between 0 and 15. This option can be used
to set the phase angle to the last one used and stop the
phasing changes. This effectively freezes the droplets when
viewed against the printhead LED.
Charge Value This option is used to adjust the amount of charge applied to
the ink droplets in order to achieve optimum print quality.
Opens the
Phasing
menu. The
Charge Value
can be
adjusted between 0 and 255.
EHT Range Set This option sets the upper and lower limits of the EHT field
so that good quality print is achieved at all character height
settings. Opens the
Set EHT Ranges
dialogue.
EHT Value 1
through to
EHT Value 10
can be adjusted to
between 0 and 255.
If
f2
is pressed while the
Set EHT Ranges
dialogue is
displayed then all values are automatically calibrated.
EHT Trip Level Set This option calibrates the trip level for the EHT circuit.

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