Limiting frequency in Lowpass Butterworth smaller than 1 Hz

[HGerisch]

I want to create an application in which I need a Lowpass Butterworth-filter with a limiting frequency smaller than 1 Hz (e.g. o.5 Hz). But in DIAdem, I can't put in a frequency which isn't integer.
Is there a chance, to solve my problem?

[Walter_Rick]

Hi,

It is possible to use the analyse function digital filter with a limiting frequency less than 1Hz, but it is important that the sample frequency is at least the double of the filter frequency. That means if your sample frequency is 1Hz the possible filter frequencies are 0.5 Hz or less.

I hope that will help you

Greetings

Walter Rick