>
> I�m wondering what rules applies if I�m sampling a signal in short bursts?
> Lets say I want to sample a level and I do that by sampling 10 sample points
> at 1 �s apart. Then I calculate I mean value of these 10 points. The
> sampling frequency in the bursts are 1 MHz. Should I calculate my antialias
> filter by that value (fN = 500 kHz) ?
>
>
If you expect noise above 500kHz in the signal then that would make
sense. I'd place it a bit lower though since you can't really make a
brickwall filter. It will have a slope even if it was a long Tchebychev.
Regards, Joerg
http://www.analogconsultants.com
Reply by Helmut●March 8, 20062006-03-08
Hello
I�m wondering what rules applies if I�m sampling a signal in short bursts?
Lets say I want to sample a level and I do that by sampling 10 sample points
at 1 �s apart. Then I calculate I mean value of these 10 points. The
sampling frequency in the bursts are 1 MHz. Should I calculate my antialias
filter by that value (fN = 500 kHz) ?