How to measure a PI answer...?

[bleuer]

Hi there

I'm a newbie to Teststand, and for a customer project, I need to measure a PI answer. That means, I send an impuls to an output, then I control how the current reacts. In my case, the voltage luckily reacts the same way as the current, so I only need to measure the voltage.

My problem is that I can't get the picture I need...that's the way it should look like...

and if I measure, I get a signal like that:

             -----------------

             l

-------------l

I can't get the rising edge triggered over several samples...It just goes straight from 0V to Vcc...

Are there any examples or tipps you could help me with?

I'm using a DMM, Read Multi Point.vi

Thank you very much

Markus

Message Edited by bleuer on 12-14-2005 02:20 AM

[bleuer]

here is a screenshot of what I measure...

[Dennis_Knutson]

What kind of DMM are you using and how fast can it take measurements? You've got a picture from a scope set for 250ks/sec. Is the DMM that fast?