I'm new user. I like to acquire, save and process the dynamic signal data

My signal is from 5-10KHz and I'm using NI4551. I would like to acuire data for 5-10 sec, save it on the file and then perform frequency spectrum analysis. I realy appreciate if somebody refers me a vi, that I can modify to perform this particular task.
Also I know there are good examples in Labview 6.1 but I don't know which would be appropriate for my application, and how to integrate separate vi's and achive my task.
Thanks for the help

In this case, you will not be able to use NIDSA.
In order to program the 4451, you need to use the NIDAQ functions that are available in LabVIEW.
I attach an example that shows how to save data acquired on a single channel to disk.
Things you may want to add are :
- Gain (input limits) depending on your sensor
- AC/DC coupling
I also compute a power spectrum on the whole waveform.
You probably want to analyze your data in smaller blocks or analyze transients and modifying this example should be very easy.
Please note I've been using the "waveform data type" to save data to a file in binary format.
If you want your data to be "readable" by humans (ie save in XLS file format), you will have to use the "Export waveform to
spreadsheet file" available in the waveforms manipulation palette
I also would like to point you to the "Sound and Vibration 2.0 toolset" user manual :
http://digital.ni.com/manuals.nsf/websearch/AC7BC19618C720BD86256BB2005AB842?OpenDocument&node=132100_US
You may find useful information about signal processing in this manual.
Hope this helps !
Gerald
Attachments:
4451_Save_and_Process.vi ‏75 KB

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I'm new user. I like to acquire, save and process the dynamic signal data

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