how can i create an indicator to read the RMS value of my FFT using FFT Spectrum (Mag-Phase).vi

[hafizzuddin]

Hai to all,

how can i create an indicator to read the RMS value of my FFT using FFT Spectrum (Mag-Phase).vi.

as u can see in my block diagram(attached), i can use statistic to read the RMS value for the data but i cant's use it on the FFT Spectrum (mag-Phase).vi .

Thank you for helping.

[shrekt]

Hi,

First try to minimize the use of express vis coz of (dynamic data type)

and the components are to be extracted before performing on cluster.

see the attached vi

Regards,

Shrek

[hafizzuddin]

Dear Shrek, I've tried the method from the VIyou attached, but it seems there's been an error when i connect it to my VI, u can i the attachment.

It says:

'You have connected two terminals of different types.

The type of the sourse is 1D arrays of cluster of 3elements.

The type of the sink is cluster of 3 elements.'

What does this means?

[hafizzuddin]

what are your oppinion if i use the 'array to cluster'. will this work?

[shrekt]

Hi,

just change the index in both cases

See the attached vi

Message Edited by shrekt on 01-08-2010 04:25 PM

[hafizzuddin]

thankz...i will try it..

[Coq_Rouge]

What are you trying to do? if you want RMS measurents Labview has some simple functions for calculating that. Also please do not use Express VIs. Using Express VIs is like peeing in your pants a cold winter day. You may be warm for short period, but then you get much colder

[hafizzuddin]

thank you for the opinions, for now i am not using any express Vi..

[Coq_Rouge]

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hafizzuddin wrote:
thank you for the opinions, for now i am not using any express Vi..

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In the long run you will benefit from this. Anyway is your problem solved, or do you need more help?

[hafizzuddin]

for now, i can't test it yet due to my equipment is in my lab, i can only find it out this monday, i'll drop by later. thank you