Recording and playback of aquired waveform

[ern]

Hi

Please could someone suggest a way in which a waveform which i obtain can be recorded so that it can be playedback at a much slower rate. Is it pretty easy?

I wish to obtain some data from a cars timing sensor and work out all sorts of angles etc, but it would be at 10k Hz or so and i would like to be able to view the entire waveform at any rate i wish.

Cheers

Beginner

[MarkLe]

Hi Ern,

It sounds like you would be wanting to resample the waveform you've 'recorded' - this changes the delta T or spacing of timestamps of the waveform.

If you're using the Express VIs, there is a particular Express VI known as Align and Resample - details of this can be found in the LabVIEW help or here:

https://www.ni.com/docs/en-US/bundle/labview-api-ref/page/vi-lib/express/express-signal-manip/aligna...

Links are also referenced to the non-express VIs, which give you more flexibility over configuraing the operation, but don't have interactive front panels to help you with configuration.

Remeber, if it's just zooming in on parts of the waveform you're after, you can use the zoom controls on graphs or charts, details here:

https://www.ni.com/docs/en-US/bundle/labview/page/zooming-and-moving-the-view-of-a-graph-or-chart.ht...

I hope this helps you get started.

Best wishes,

Mark
Applications Engineer

National Instruments