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which scope is right for me

Which product is right for your exact requirements

which scope is right for me

Postby Guest » Tue Jun 16, 2009 9:20 pm

I have a pretty simple request: I need to grab a 5 volt (or less) signal that will span from 3 to 150 microseconds. Ideally, I would like to be able to export the output to MS excel for downstream processing. Can you recommend the most cost effective product to get this done?
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Postby ziko » Wed Jun 17, 2009 8:39 am

Hi question is, how fast does the signal change, this will enable me to determine the sample rate and number of samples and hence the most cost effective product.

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Ziko

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Postby Guest » Wed Jun 17, 2009 3:18 pm

This would be for recording the max output of LED flash lamps. The rise time is in about 3 microseconds to peak and it stays there for 80 to 120 microseconds, depending on my settings. I don't really need to catch the rise portion of the signal, but it would be nice to have at least a number for every 5 to 15 microseconds to make sure the flash peak stability is good. Does that help?
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Postby ziko » Wed Jun 17, 2009 3:48 pm

Ok so you would need to take maybe sample at quicker than 1us intervals for a period of 200us since that is the most suitable time base (20us/division).

Therefore you would need to sample at the very least 1MS/s probably 2MS/s at 20us/division. This would then use a memory of 400 samples.

I think the 2203 should be fine it has an analogue bandwidth of 5MHz, this should be sufficient for the fast rise time. The sample rate is 40MS/s and memory is 8kS.

http://www.picotech.com/picoscope2200-s ... tions.html

Hope this helps.

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Ziko

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