FFT Analysis and graph display

[411051]

Hello ,

I am taking vibration signal from accelerometer ,using cdaq with NI9234 card. I have designed the attached vi but results are not correct. I am having doubt about

1. Position of highpass filter after integration is correct or not?(I have used integration to get vibration velocity signal)

2. What will be the proper combination of 1. Samples to read,2.samples per channel,

3. sampling rate

4. sampling frequency of highpass filter

As I want to measure vibration of rotating machines having frquency 10Hz to 1kHz .

Please guide.

[GerdW]

Hi number,

I have designed the attached vi but results are not correct.

In which way are the results wrong?

I am having doubt about

Do you doubt something or do you have questions?

1. The high pass filter result is not used anywhere, so it's totally irrelevant. Delete it…

2. Whatever you like. Whatever your device supports. (Don't forget Nyquist and Shannon!)

3. See Nyquist and Shannon.

4. The filter gets its data from DAQ, so it has no "own" sampling frequency…

What about using autoindexing loops instead of duplicating code lots of times? What about using AutoCleanup?