How to extract data from waveform

I have prepared a VI for acquisition and analysis. I have data from NI 9203 manuplate (power source). I have to use a lot of channels and more than 1 sample of a channel so Daqmx read vi out of waveform module and it is not a choice for table 1 d. How can I this form to scale data and display 2 diffferent scale given in a graphic waveform?

The DAQmx Read returns an array of waveforms.  Each waveform is t0, dt, Y components and optional attributes.  See the palette of waveform for tools to extract the components and build waveforms.

To make your scaling that you do these things:

1. Select the waveform you want to scale by using the Index table or index of waveform Array.vi.

2. download the component Y of the selected waveform.

3. resize it if Y' = m * Y = b, where is the original painting and the Y' is the matrix to scale.  You can use the standard digital functions for * and + because they work for arrays and scalars.

4 build a new waveform using Y'.

Lynn

Tags: NI Software

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