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Pulse width measurement on Rigol/Keysight
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Blackgar:
Hello all,

I have the Rigol DS1102 and Keysight DSOX1102A oscilloscopes available for my measurements.

For debugging purposes, for a 5V debug signal (output from MCU), I want to measure the pulse width that will be triggered x300 times.

What I actually wanna do is to run the same event multiple times and measure the min and max of the durations.

Is this somehow possible to be captured using the above oscilloscope and captured on a CSV or whatever file so I can analyze it?

I might have access to other oscilloscope also.


alm:
Are you looking for aggregate statistics like mean pulse width and standard deviation, or do you need access to the individual measurements?

I'm not familiar with those scopes, but scopes commonly support calculating statistics over measurements. But to get access to a series of measurements on this class of scope, I think you'll need a computer program that repeatedly takes a single shot acquisition, retrieves the measurement value and stores it. If the software that comes with the scope doesn't support it, then look into doing it with something like with WinGPIB (search the forum), TestController (also on this forum), Python or LabVIEW.

Does the sampling rate matter? This way the sample rate won't be very high. Maybe in the order of 10 samples per second.
2N3055:
Yes, like alm says for that you need to enable statistics on measurements..

That old Rigol does not have it..
I don't know if "Scrap the Toys, Get a Real Oscilloscope" Keysight DSOX1102A added statistics, they didn't have it at first if I remember correctly...

Most new entry levels scopes from Rigol and Siglent do have statistics. Siglent SDS2000X+ and up also have histograms and histicons and other advanced features.
Blackgar:
Thanks for the replies.

I need the actual measurements and not the statistics (min, max, avg etc)
Njk:
Perhaps it'll make sense to extend the scope to include the counters. That's a specialized instruments and their main advantage is that it seems difficult for the vendors to pack that devices with more and more features resulting in an instrument that can do everything (equally poor), like what we have now with the oscilloscopes. A counter can do one thing but do it well. Even a toy counter like that in the Rigol DG generator series can do what you need, including the statistics, plus the variation plot. The other advantage it that the situation there is more calm so the prices are lower. An old yet decent branded counter can be purchased on the second hand market at a friendly looking cost. Just an opinion.
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