How to input distance between two points on a waveform graph onto a numeric indicator?

[cdavid19]

Hi all,

In my program I need to manually input the distance between two points on a waveform graph into a numeric control, which is used in an equation. The wave changes constantly and I was wondering if there Is anyway to record that distance automatically? Thanks

[NitzZ]

Hello,

Are you making the measurements in real time or saving the waveform file and later on measuring the parameters.? If the second one is the case you can just employ a time stamp marker in the acquisition vi of yours and extract it later on and calculate the difference automatically. It would be easier if you post your vi. so that i can make it clear.

Best regards,

Nitzy

[GerdW]

Hi David,

maybe you should define "distance" more clear???

Distance in

- x-direction (time?)

- y-direction (amplitude?)

- both directions (vector? in real units or in pixels?)

Do you want to calculate the (main) frequency of your waveform?

[cdavid19]

I want to acquire the data in real time. The distance is measured in time. Here is a copy of my program. My waveform is coming from Ni-Scope. Thanks