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Fast digital data streaming

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Fast digital data streaming

Postby eglotero » Fri Jan 30, 2015 9:17 am

Hello,

I would like to know if it is feasible to use a 3206 MSO to acquire data (streaming mode) from 4 digital channels and save it to a *.txt file for later processing. I was checking the datasheets and some forum topics and it sounds possible but I think it is better to ask here before I start.

The 4 signals I want to acquire come from 2 position sensors (quadrature signals) and the frequency can be quite high, up to some 3 MHz. As far as I understand I would need to write some code for this application, I also see there is an example for a console application that reads the data in streaming mode (so I would only need to do some modifications to this example right?).

Kind regards,
Otero
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Re: Fast digital data streaming

Postby Karunen » Fri Jan 30, 2015 3:40 pm

Hi Otero,

This should be okay assuming your using ports D0-D7.

How long do you intend to stream for?

And you should just be able to modify the code we provide to achieve what you require.

And it should just be a matter of editing the code we provide in the SDK to suit your application.

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Re: Fast digital data streaming

Postby eglotero » Tue Feb 03, 2015 9:46 am

Hello Karunen,

thanks for the quick reply! The intention is to stream for a long time (about 10 to 15 minutes).

Kind regards,
Otero
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Re: Fast digital data streaming

Postby Karunen » Wed Feb 04, 2015 9:07 am

Hi Otero,

You are correct this can only be done using streaming mode.

If you only intend to streaming 4 digital channels you can do this with the 2205MSO.
https://www.picotech.com/oscilloscope/2205-mso/picoscope-2205-mixed-signal-oscilloscope

With USB 2.0 you can stream up to around 30 MS/s.

Also D0-D7 counts as 1 sample, D8-D15 counts as another sample.

Kind Regards,
Karunen

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Re: Fast digital data streaming

Postby eglotero » Thu Feb 12, 2015 9:52 am

Hello Karunen,

after some discussion it was decided we should get a 3203D-MSO scope for this task, pretty much due to the USB 3.0 (it may be a good thing to have).

The problem is, I've just checked the PS3000A SDK and the 3203D-MSO is not on the list of supported devices. Is there no SDK for this model? I couldn't find something on the downloads list either.

Kind regards,
Otero
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Re: Fast digital data streaming

Postby Karunen » Thu Feb 12, 2015 11:59 am

Hi Otero,

The list might be out of data the 3XXXD MSO variants are supported by the PS3000A SDK.

Can you tell me which SDK version you downloaded and where you found this list?

Kind Regards,
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Re: Fast digital data streaming

Postby eglotero » Thu Feb 12, 2015 12:41 pm

Hello Karunen,

link to the SDK:
https://www.picotech.com/downloads/lightbox/sdk-ps3000a

Version: PS3000Asdk_r10_5_2_1

There is a Readme.txt, there you'll find a list of "Products supported by this SDK". The PS3203D-MSO is not on the list.

Also in the product page, if you go to picotech.com > downloads > Oscilloscopes > PicoScope 3000 Series > PicoScope 3203D MSO, you will not find the link to the SDK.

Kind regards,
Otero

Kind regards,
Otero
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Re: Fast digital data streaming

Postby Martyn » Tue Mar 31, 2015 10:20 am

The download is now available, additionally a new version of the SDK will be uploaded shortly.
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