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GW Instek GDM-8351 - Page 82

GW Instek GDM-8351
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GDM-8351 User Manual
82
Filter Count
Filter count defines the number of samples to be
averaged per reading. More samples offer low
noise but a longer delay between measurements.
Less samples offer high noise but a shorter delay
between measurements.
Range:
2 ~ 320
Filter Window
The filter window defines the threshold for when
the digital filter data is updated again. When the
AD data falls in the range between TH and TL, the
filter keeps processing. When the AD data falls out
of the range between TH and TL, the filter will
restart. When measuring unstable signals,
appropriately setting the filter window can
improve the measurement speed.
Time
AD data
TH
TL
TH
TL
TH
TL
Filter
Filter
Filter
Restart
Restart
TH: Threshold High, TL: Threshold Low
Filter Window
Formula
Previous data*(1-window)< threshold< previous
data*(1+window).
Range:
10%, 1%, 0.1%, 0.01% and none

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