I fill the necessary information on the filter wizard as follows
Gain-6dB
-3dB=40Mhz
Stop band=50Mhz (nyquist frequency of my daq card)
Gain at F stop frequency as (6 dB - 60 dB) as I found the information on the AN699 application note
60 dB is the SNR value of the daq card
Finally, I got the error message as follows
No Lowpass filter solution found with order ≤ 10.
Options:
- Decrease passband frequency
- Increase stopband frequency
- Increase passband attenuation
- Decrease stopband attenuation
My question, is that impossible to create a filter on above parameter or did I insert the incorrect information on to the filter wizard
Because I really do not understand the Gain at F stop frequency of my daq card
Thank you