Filter on Dewesoft AO in modal test

Hi,

Is there a way to set-up a filter on analog output signal for a shaker, when using modal test module with Excitation settings -> Excitation source -> Deweesoft AO (countinous random)? see picture below, from Channel setup - Modal test, excitation.

Dear Dan,

Thank you for your interest and question.

We do not directly support such excitation filter settings in the Modal test setup, but please try to add the Function generator module to you setup after you have completed configuring the Modal test module. In that way you have some freedom in modifying what the Modal test will output on the AO channels.

In the Function generator module setup you can apply a filter to the random noise signal:

After this is done try go to Measure and do a MT test-run. I hope this will help you.

I have also created a video where I try to explain this in the link below:

https://drive.google.com/file/d/1yymi3pWouiGO8Wx-x5qc0IMDhaymdDZl/view?usp=sharing

If you have made channel changes to your setup, then remember to rebuild the MT Measure display template you use:

Best regards,

DEWESoft

Hi,

thanks a lot for the detailed explanation. The video is super helpful too.

It wasn't clear how the signal generator and modal settings for the shaker are connected. However, it is well explained and I will use this method in our test setup.

The reason we don't want to change the sampling frequency is that we have a measurement sequence with sequencer already in place and a setup with some advanced function, that would take a lot of effort to change. Adjusting the output signal with a filter is much more convenient.

Thanks again

Dan

Dear Dan,

Ok, I see. Yes, then this is probably an easier way to do it.

Thanks for the explanation.

Br