5122 and signal processing

[cosmund]

Hi,

I'm using NI-Scope to read signals of the PCI-5122 card.

I wish to do Fourier analysis, band pass filtering and display a frequency graph.

Whats the best way to do this? Does 5122 have on-board Fourier analysis?

Also, does NI-Scope provide these functions?

Thanks,

cosmund.

[Dan_K]

Hello cosmund,

You have a couple of options here. You can either use some of the measurement and processing capabilities found in NI-Scope or you can use generic LabVIEW VIs. The main difference between the two methods is in the setup.

When looking at the NI-Scope method there are several examples that use the built in measurement options that are installed with the driver itself. These examples can be found in the Example Finder under Hardware Input and Output»Modular Instruments»NI-SCOPE (High-Speed Digitizers)»Measurements. An example of this type of programming can be seen below.



As far as using LabVIEW-specific VIs there are several examples separate from NI-Scope programming that comes with LabVIEW itself. These examples can be found in the Example Finder under Analyzing and Processing Signals»FFT and Frequency Analysis and Analyzing and Processing Signals»Filtering and Conditioning. An example of this type of programming can be seen below.

Message Edited by Dan_K on 04-02-2009 05:04 PM