Fall time measure at Labview

[arielsl\]

Thank you guys for the really good answers

 I tried to do it, I upload my VI...

I got a problem connecting the "greater or equal" and the "stop" of the while loop, you can see it in my upload VI.

Can you help me?

And thanks again for the help, it's really important.

[arielsl\]

I'm sorry but I have one more qustion exept the last one.

I upload the same VI that I uploaded earlyer, but there is a small change:

I want to filter my wave. you can see that I tried to do so, but I got that error that I don't understand...

Thank you again.

[Lucither]

Hi Ariel,

Is a simple solution. You just need to right click on your tunnel intering the loop and select 'Auto Indexing':

I have re-written the code for you here. I have embelished slightly on what the other guys did before. In the previous example the value would be missed if it happened to be the last value in the array (highly unlikely unless you are looking for the 0v point). Have just altered slightly so will still catch the last value also. Also, in the code you posted you had used the 'Greater or Equal' rather then the 'Less than or equal', sure this was just an oversight.

Regards,

Lucither

[Lucither]

You havent added another vi, not one with a filter attempt. What is it that you will be filtering?

[arielsl\]

I succssed!   Thank you - it was very important.

Know I just want to know how do I change the time between samples... I mean the dt.... 

[tbob]

dt is a function of your sample rate.  When you set up the test equipment, like a digitizer or high speed DIO, you set the sample rate.  This tells the instrument how fast you want to take readings.  Think of sample rate as the horizontal time control on an oscilloscope.  dt is always 1 divided by sample rate.  If the sample rate is 1MHz, then dt is 1/1e6 or 1e-6 or 1uS.

[arielsl\]

Can you help me?

I upload my VI..

Thank you....

Ariel

[arielsl\]

Does anyone have a solution?

[tbob]

Your latest vi has subiv's that I don't have on my system.  However, it doesn't show any of the solutions that were posted before.  Is this a new problem?  What is it that you want from this vi?

[arielsl\]

You don't have that subvi's because I got it from the driver's example that I downloaded for my scope....

I just want to determine what will be the dt at any acquisition of waveform that I'm gonna do with my scope.

I think that if you'll can do a VI that uses my scope and does a trigger acquisition with the regular subVI's that we both have it will be better, because that way  I will can use it with another scope except this one...

I know it should take long time, so I'll understand if you don't want to do it.

Thank you,

Ariel.