Elapsed time between 2 points

[airbornehawk]

Hello,

I'm trying to measure the time between 2 datapoints.
When the data acquirement begins the time should be saved and when the signal reaches 90% of it's max.
Those 2 times then get subtracted and then you have the elapsed time.
But I'm not quite sure how to do this... I was thinking with flat sequences.

[crossrulz · Accepted solution]

Are you constantly capturing a signal?  What is your sample rate?

What you need to do first to capture the signal.  You can then find the maximum value with the Array Max & Min function.  Calculate your 90% (0.9*Max).  Search the data until your get greater or equal to the 90% mark.  Get that sampling number.  Your time is then number of samples to the 90% mark divided by the sample rate (in Samples/Second).