Espectros de amplitudes en dominio de frecuencia

Buenos días a todos,
De nuevo necesito ayuda. Trabajo con Labview 8.6 y DIAdem 11
Tengo que realizar unos informes en DIAdem a traves de Labview donde debo sacar gráficas de espectros de amplitudes en el dominio de la frecuencia de unas señales de geófonos(velocidad) y acelerómetros(aceleración)
He estado mirando en labview, en Signal Processing-->Spectral Analysis la función de "Amplitude and Phase Spectrum" y está saca el espectro de amplitud pero en el dominio del tiempo.
Necesito encontrar la función que me obtenga la transformada de Fourier en el dominio de la frecuencia.
¿Alguien me puede ayudar?

Gracias dSierra,
Precisamente es la función que estoy utilizando, tras mirar ejemplos y el foro ya conseguí lo que necesitaba (el espectro de amplitud)
Ahora tengo otro problema:
Esta gráfica es composición de un cluster de 3 elementos:
pero esta gráfica forma parte de un informe de Diadem, así que para ello utilizo el objeto Diadem Report y cuando uso la vi "Convert to Dinamic Data" no me pinta la gráfica bien.
Este es el código completo:
y el resultado en Diadem es este:
¿alguien me puede ayudar?
gracias a todos

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Hola Aristoy, que es lo que
estas buscando hacer? en que consiste tu aplicación?. Una forma de pasar las
señales del Dominio del Tiempo al dominio de la frecuencia es utilizando la FFT
(Fast Fourier Transform). Esta te va a dar las amplitudes a distintas frecuencias.
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LabVIEW puedes utilizar el VI Express de Spectral, se encuentra en la paleta de
Expres>> Signal Analisys.
Tambien puedes utilizar el
VI directo en la paleta de Signal Precessing>> Waveform
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FFT and Signal Analysis Tutorial
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I am hoping someone can help, as I have spent hours trying to change the amplitude - I thought it may be ymax and ymin of drawPanel - but then I cannt get n number of waves at the required frequency.
Please help!
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Like this
By the way, that Abort VI button is not for stopping your loops. I just kills execution wherever it may be. It should only be used as a last resort if your stopping code is not working properly.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
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Record_BD.png ‏88 KB

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