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PicoScope 3206 - Sampling rate

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PicoScope 3206 - Sampling rate

Postby Marcel M. » Mon Jul 11, 2016 2:35 pm

Greetings,

I want to analyze the development of a transient signal, with a PicoScope 3206 oscilloscope, over a span of 20 seconds with a sampling rate of 1MS/s. But when making the measurement i experience a limitation of the sampling rate at approximately 48 kS/s.

How can i work around this issue?

BR,
Marcel
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Re: PicoScope 3206 - Sampling rate

Postby alan » Mon Jul 11, 2016 7:57 pm

Hi,

I think the problem is that you have set the max memory (no of samples) to be collected to 1 million - 1 million samples spread over 20 seconds is 50,000 samples per second.

Increase the max no of samples to collect in the box to the right of the time/div setting and the sampling rate should increase.

If that does not work upload the file so we can see what is wrong with the settings.


Regards
Alan
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Re: PicoScope 3206 - Sampling rate

Postby Marcel M. » Mon Jul 11, 2016 8:36 pm

Hi Alan,

The collection time is set to 20s with a total number of samples of 20MS, as you described. However there still seems to be a limitation of the number of samples at approximately 1.000.000.

The file is too large to be uploaded here, but can be downloaded with the following link:
https://www.dropbox.com/s/9qxb239x5x471 ... sdata?dl=0
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Re: PicoScope 3206 - Sampling rate

Postby Martyn » Tue Jul 12, 2016 7:51 am

The 3206 is an older model, and does not support streaming mode, Help->User'sGuide->Contents->Reference->DeviceFeaturesTable, which means that all collected samples must be stored in the scopes memory (1MS).

For your setup you will see the actual value being used as 967.563 , over 20 seconds giving a sample rate of 48.83kS/s
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Re: PicoScope 3206 - Sampling rate

Postby Marcel M. » Tue Jul 12, 2016 7:59 am

Thank you for the quick reply.

Do you have any suggestions on how to work around this issue, or suggest any model which is suited for a such task?
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Re: PicoScope 3206 - Sampling rate

Postby Martyn » Tue Jul 12, 2016 9:59 am

It would not be possible to workaround this restriciton with the 3206.

Streaming at 1MS/s or greater is supported by all devices except the 3204/5/6. I would suggest using the Comparison Chart to specify your particular requirements to see the potential options and prices.

You may also find a suitable product in our PicoAssured section.
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