These filters are independently software programmable.
Also, all instruNet hardware provides fully programmable
digital low pass, high pass, bandpass, and bandstop
filters on each analog input channel.
For details on working with digital filters,
What is an Anti-Aliasing Filter?
For a summary of anti-aliasing filters and why you might need them, click
iNet-500 AFS Filter Daughterboard
The 8-Pole i500
analog low pass filter daughterboard is ideal for
It provides extremely low ±0.01 dB maximum passband
ripple for Fin/Fc ≤ 0.5.
If one uses further
oversampling, digital filtering and
desampling; then passband ripple
is ±0.002 dB for Fin/Fc ≤
0.8 due to the accuracy of a 30-pole digital filter.
The end user installs between 1 and 6 filter daughterboards onto each
i423 card, one per channel.
For details, click here.
iNet-423 Internal Filters
The i423 card provides a 2 pole analog low pass filter at 6Hz or
4KHz on each analog input channel.
iNet-100 Internal Filters
box provides a 1 pole analog low pass filter
at 40Hz or 4KHz on each analog input channel.