Author Topic: count rising edges between cursers  (Read 1234 times)

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Offline snarkysparkyTopic starter

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count rising edges between cursers
« on: December 03, 2023, 04:18:25 pm »
Would love to be able to dial my cursors to position and count rising edges between them.

I really need that capability in my oscope.   Using a sig 1104xe.   Now i export the waveform and open in octave and run a script i wrote.

Does any scope in low cost range do it?

thanks

 

Offline csuhi17

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Re: count rising edges between cursers
« Reply #1 on: December 03, 2023, 04:57:01 pm »
Rigol DHO900 and maybe the 800 also contain several types of counters.
you can find it in the description.
you can set two sources, one is zoom and the other is main.
I did not find an option for counting between two indicators.

I made a small video, in the process I managed to find a bug.
DHO900 series.

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« Last Edit: December 04, 2023, 04:28:44 am by csuhi17 »
Fnirsi oscilloscope = waste&regret
 

Offline alm

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Re: count rising edges between cursers
« Reply #2 on: December 03, 2023, 08:13:59 pm »
My most modern scope is about 20 years old, so I can't comment on which entry level scope you should look at, but what you're looking for is a scope that can gate a measurement between two cursors, and then a measurement like count number of edge transitions (just divide by two and add uncertainty of +/- 1 for just the rising edges). My 20 year old mid-range Lecroy scope can do it as part of the jitter & timing analysis option, and I think Siglent has taken a fair number of features from Lecroy, so it wouldn't surprise me if some modern Siglent scopes supported it, but I'm sure others will chime in for that.
« Last Edit: December 04, 2023, 12:41:13 am by alm »
 

Online 2N3055

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Re: count rising edges between cursers
« Reply #3 on: December 04, 2023, 12:14:30 am »
SDS1000X-E has measurement gates. But no edge or pulse count measurements.
Scopes SDS2000X+ and up have  both...
 

Offline TurboTom

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Re: count rising edges between cursers
« Reply #4 on: December 04, 2023, 12:15:35 am »
Rigol's DHO1k can easily do that and I'm pretty sure the DHO800 / 900 models as well since they untilize the same basic software package. Even the venerable DS1000Z was / is capable of this, though IIRC, the pulse / slope counting function had been added with some firmware update as the instrument matured. Whatsoever, now it's there.
 

Offline csuhi17

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Re: count rising edges between cursers
« Reply #5 on: December 04, 2023, 04:50:37 am »
Rigol's DHO1k can easily do that

How were you able to set the DHO1k to count between the two CA-CB indicators? I can't find it in the description, and I couldn't set it on the DHO924 either, I can only select main and zoom as Region.
Fnirsi oscilloscope = waste&regret
 

Offline TurboTom

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Re: count rising edges between cursers
« Reply #6 on: December 04, 2023, 11:06:41 am »
Oh that comes unexpected!  Another detail where the venerable DS1000Z performs better than the DHO800 / 900. The DHO1k offers three choices for measurement region: Main, Zoom or Cursor, see screenshot.
 
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Offline ebastler

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Re: count rising edges between cursers
« Reply #7 on: December 04, 2023, 12:39:01 pm »
How were you able to set the DHO1k to count between the two CA-CB indicators? I can't find it in the description, and I couldn't set it on the DHO924 either, I can only select main and zoom as Region.

Defining a measurement region via the cursors was added to the DHO1000 and 4000 family with firmware 02.07, released in April, according to the release notes.
 
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