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Electronics => Beginners => Topic started by: masterpj55 on April 18, 2019, 06:37:41 pm

Title: Oscilloscope Full Width at half maximum measurement?
Post by: masterpj55 on April 18, 2019, 06:37:41 pm

Hey Guys.

I'm trying to measure the " full width at half maximum"  on my rigol oscilloscope (Rigol DS1054Z) but really cannot figure out how this would be done.
I want to know the pulse width between 2 points where the value is half of the maximum value of a pulse.

Title: Re: Oscilloscope Full Width at half maximum measurement?
Post by: ebastler on April 18, 2019, 07:42:04 pm

Using the softkeys on the left side of the screen, select "+Width" from the Horizontal measurements. That will measure the width of a pulse at the "middle" threshold value.

The "middle" threshold values defaults to 50%, i.e. half maximum, which is what you want. But it can be changed via
Measure > Setting > Type > Threshold.

This is described on page 6-26 in my version of the manual. (Figure 6-3 and the text below.)

Title: Re: Oscilloscope Full Width at half maximum measurement?
Post by: masterpj55 on April 18, 2019, 08:29:26 pm

Thank you so much! So i was doing it right! Apreciate it!
Rigol on the phone wasn't sure but im glad this is confirmed now :)