RMS current function

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RMS current function

Postby François » Mon Feb 06, 2012 3:41 pm

Hello,

Firstly, I'm sorry for my bad English, I'm French... :(

My question : I have measured an instantaneous and RMS current with my Pico product. So I have now two curves.
I just want to know if it's possible to calculate the RMS current from the instantaneous current without need to do an other measure. I was searching for a function in the "Maths Channels" but I didn't find.
Image
That's the function I want to calculate.

Is it possible ? If yes, can you help me please ?

Best regards,

François
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Re: RMS current function

Postby François » Thu Feb 09, 2012 2:59 pm

You can see an example in the attachment.

I'm searching to write in "Maths Channel" a function which is able to calculate the red curve from the blue curve...

Thanks
Attachments
Doc1.doc
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Re: RMS current function

Postby Martyn » Wed Feb 15, 2012 9:28 am

Can you save your waveform as a csv file and post it here then we can take a look to see if it is possible to create the maths channel.
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Re: RMS current function

Postby François » Mon Feb 20, 2012 3:15 pm

You can see in the attachment the csv file and the original file...

If you need to have others measurements, I can do it without problem.

Thank you
Attachments
20120220-0001.psdata
original file
(45.55 KiB) Downloaded 120 times
20120220-0003.zip
csv file
(170.06 KiB) Downloaded 111 times
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Re: RMS current function

Postby Martyn » Mon Mar 05, 2012 1:49 pm

I haven't been able to create an equation to do this.

Has anybody else had a go ?
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Re: RMS current function

Postby François » Tue Apr 24, 2012 10:09 am

Hi,

We have found a component which is able to do the conversion from the instantaneous current to the RMS current, this is the reference : AD536A.
If you need to see technical informations, you can go here :
http://pdf1.alldatasheet.fr/datasheet-p ... D536A.html

My question : is it possible to integrate the component or at least its function to the Picoscope ?

Thanks,

François
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Re: RMS current function

Postby Martyn » Mon Apr 30, 2012 9:38 am

It is unlikely that we would be able to integrate the component into Picoscopes. You could contact support@picotech.com for a definitve answer as to whether the functionality could be added.
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