Sound and Vibration measurement toolkit

[Petar2015]

Hi,

I have acquired the input and output of my DUT. Both of them are as time-wave (Voltage).

The input is from a function generator, and the output from a photodiode.

Now I want to obtaine the FRF and phase difference vetween these two waves, Does anyone know how can I do that?

Also, I have performed the sweep by the Function generator, too. so the input is Swept-freq.

I have attached the project (Sound and vibration toolkit)

Thanks

Petar

[Bumblebee_Tuna]

Hi Petar,

Regarding the FRF, you can add a step in SE called frequency response which can be found by navigating to add step>analysis>frequency domain measurements>Frequency Response.

Here is a KB that discusses how to determine the phase difference between two signals in SE:

http://digital.ni.com/public.nsf/allkb/F4BB644ECCA595D886256FFE00722E29

I hope that helps!

Regards,

Jayk

[Petar2015]

Thanks, it was really helpful.

Petar2015