gareth123

QUOTE (gareth123 @ Jan 23 2009, 08:12 AM) updated .vi file. I had changed the -inf icon to a numeric constant and it works. Now I would like to display the waveform in real time domain exponential signal, magnitude spectrum and phase spectrum.

ok. this is something which i had tried earlier. I'm supposed to do a fourier transform of this signal.... exp(-alpha*t) where alpha is greater or less than 0.. the upper limit is inf and lower limit is 0. the waveform i got is a straight line, and there's this error -20003 i.e number of samples > 0. I thought I had already defined the number of samples? Is that anything which I had missed out? Please see attached.

QUOTE (jcarmody @ Jan 18 2009, 01:12 PM) Thanks a lot. It sure helps. i tried to wire the exponential function into the graph but it seems it become loose ends. To use a formula, can I say that I had to specify an input into the formula, and let the formula operate from there? Another thing which I'm pretty curious about. At first, my formula was sin(2*pi) and why did you change it to sin(2*pi*mod(i,pi)) instead? what does the "mod(i,pi)" do?

I'm a new user to LabView and am curious about the loops. there are several different types of loops available for LabView and would like to find out. Which loop should I use depending on what type of situation? Can state some examples?

how did you set the type of integration method? as in this example, you set "trapezoidal rule"

this is something which i had tried, however i don't see any output waveforms. did i miss out on something?

I'm a beginner and only started using LabView a few days back. I would like to learn the basic functions, however i do not have a guide. As a start, can I know what diagrams I need to input to create an exponential function, and reflect the waveforms?

I'm a beginner and only started using LabView a few days back. I would like to learn the basic functions, however i do not have a guide. As a start, can I know what diagrams I need to input to create an exponential function, and reflect the waveforms?