period of an arbitary signal....?????

[Anoop P S]

i want to find out the period of an arbitary signal which is somewhat sine wave........????also i want to know how to assign key board shortcuts to some keys in the front panel....?????my VI is not working properly when assighned swithes for different tasks like data storing, plotting, auto/manual selection and so on.....i am doing a process control system......can any body pls help me.....thanks.........

[RavensFan]

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Anoop P S wrote:
i want to find out the period of an arbitary signal which is somewhat sine wave........????also i want to know how to assign key board shortcuts to some keys in the front panel....?????my VI is not working properly when assighned swithes for different tasks like data storing, plotting, auto/manual selection and so on.....i am doing a process control system......can any body pls help me.....thanks.........

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1.  You can do an FFT on the signal.  Find the dominant frequency.  The inverse of that frequence will be the period of your signal.

2.  Select the control on the front panel.  Right click, properties,  Key navigation tab.  There you can set the shortcut keys for that control.

3.  You'll have to post your VI in order to get help with things like how the code is not working properly.  Usually they are the result of beginners not knowing how the data flows between different parts of the code.

I would recommend looking at the online LabVIEW tutorials:
LabVIEW Introduction Course - Three Hours
LabVIEW Introduction Course - Six Hours