band pass filter

[jim346]

Hi.

i am trying to implement a bandpass filter  blocking frequencies below 0.1Hz and above 5Hz with sampling rate of 50e-3. I have implemented it using a butterworkh as shown in attached but nothing is coming out, my graph and array are empty. Have I the filter configured correctly or is there another stage? Should I use a different filter block?

Many thanks,

Jim.

[ben64 · Accepted solution]

You didn't posted your text file but from your diagram I would suspect a mismatch between your sampling frequency (50 mHz -> period of 20 sec ) and your loop timing (wait for .. set to 5 msec). Try to increase your sampling frequency or your loop delay.

Ben

[jim346]

Thanks ben.

I was dividing into 1. Silly me,

Thanks.