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Analog Input Filter
Program Frequency Analog Filter
Analog filtering is applied after the analog reference signal is con-
verted to a digital signal. The type of filtering used is Rolling Aver-
age over time.
Settings:
0 — No Filter
1 — Filter (10 mS)
2 — Filter (15 mS)
3 — Filter (30 mS)
4 — Filter (60 mS)
The analog input signal is sampled and converted to a digital sig-
nal. With no filtering applied, the resulting digital value is scaled
for use by the microprocessor of the ASD.
If the filtering selection 10 mS is selected, the ASD averages the
last 10 mS of sampled signal and converted (digital) values. The
rolling average is updated (every 4 µS) and scaled for use by the
microprocessor.
This holds true for the 15, 30, and 60 mS selections providing a
larger sample to produce the average for use by the microproces-
sor.
False responses to electrical noise are eliminated with no loss in
bandwidth because the value used by the ASD is the average
value of several samples.
108
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F209
Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
F210
Direct Access Number —
Parameter Type — Selection List
Factory Default — No Filter
Changeable During Run — Yes
https://www.toshiba.com/tic/
F209
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