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modulating a signal in labview

modulating a signal in labview

modulating a signal in labview


I'm trying to apply the fsk method to modulate an input square wave.  I'm able to manipulate the signal into two different frequencies to represent the 1's and 0's,  however, the output signal is not a continuous signal.  

I think my problem is applying the 'if-else' logic, that's why I'm either getting the 1 OR 0 representation.  I've tried several differnt approaches, but I guess all my methods boil down to the 'if-else' logic.  If that's the case, is there a way for me to extract each signal and sum or (append) the two?  I saw the Append Signal VI but how do I extract the two signals from an 'if-else?'

Thanks in advance!

RE: modulating a signal in labview


I am unclear as to what you mean by if-else logic. Please clarify if you can.

Did the examples I emailed help out at all? Like I said, I have no FSK experience but will try to assist. There's always the NI Developer Zone too. And Thank You for the star!

Wheels within wheels / In a spiral array
A pattern so grand / And complex
Time after time / We lose sight of the way
Our causes can't see / Their effects.

RE: modulating a signal in labview

Hi Analogkid2digialman,

I wasn't able to open the examples that you had sent because I'm using a later version of Labview (7.0).   Also, the NI Developer Zone has a lot of examples, however, it requires the Modulation Toolkit which I don't have.  

Let me forward you my work and maybe then my previous post will make more sense.  And of course, that doesn't mean that I expect you to help me-- but it will be greatly appreciated!

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