LabView Instrumentation Experiments without any Physical Interface

[Sanket9391]

Hi friends I need some kind of experiments that can be made using LabView without any external Interface especially in Instrumentation (VCO,PLL,Opamp like) so please tell is it possible or I will need the Interface or can I do something in Instrumentation without Interface in LabView

[Norbert_B]

Your post reminds me on "42".

What exactly is your question? What kind of "experiment" are you talking about?

If you talk about a simulated experiment, sure you can do it using LV without any hardware interfaces.

Norbert

[Sanket9391]

sir I am new user of LabView and recently I donot have any DAQ device or like but I want to build up some more experiments than generation or simulation of signals..

Please suggest me what I can do in OpAmp or VCO and filter like domain without any physical Interface??? 

[Sanket9391]

sir I am new user of LabView and recently I donot have any DAQ device or like but I want to build up some more experiments than generation or simulation of signals..

Please suggest me what I can do in OpAmp or VCO and filter like domain without any physical Interface??? 

[Norbert_B]

Again, if you do not have a input hardware device, you have to simulate the data. If yu have another system having an input device, you can simply write measured data to disk and use that file for further analysis.

What do you like to achieve? There are a bunch of functions which enable you to create good simulated signals for many applications (e.g. sine wave with noise, ...). You should start your search in the waveform palette.

Norbert

[altenbach]

LabVIEW can be used as a pure programming language (I do it all the time!). Data acquisittion or instrument control hardware is completely optional.

You can even simulate a real instrument by using simulated devices. For more complex functionality, you can simulate any other behavior yourself in software.

Of course you still have the "user interface", i.e. the LabVIEW front panel.

Can  you explain in a few more sentences what you have in mind?

[Sanket9391]

I wish to make a system using labview(without any interfacce) in which I can study behaviour of Voltage controlled oscillator and filters in both time and frequency domain.

like simply I have created a Function Generator now I want to give these signals to the VCO(Voltage Controlled Oscillator) but I do not find the VCO simulation on LabView Pallets or even I dont found a Spetrum Analyser so that I can look in Frequency vs Voltage like views

Sanket

[johnsold]

LabVIEW is not primarily a circuit simulation program, so you will not find something like a VCO built in. There are several spectal analysis VIs in Signal Processing >> Spectral and simple FFT and other transform VIs in the Transforms palette.

You could probably simulate a VCO by using the Sine Wave.vi and some mathematical functions to scale voltage to frequency.  PLLs are quite complicated and accurately simulating one might be a significant challenge. In particular validating the simulation  will not be trivial.

Lynn

[Sanket9391]

Kindly thanks all for giving me guideline espically Lynn.

Firstly I thought it might be simple to build PLL or VCO on LabView since I am new it might be my less knowladge about LabView that I am not finding right stuff in it.

I will try different methods and logics to build the same I know its really not that much of simple 

once again thanks all for valuable replies and comments....