PicoScope 3000: Getting a sampling time of 1ns or lower

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Fab
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Joined: Mon Oct 21, 2019 9:33 am

PicoScope 3000: Getting a sampling time of 1ns or lower

Post by Fab » Mon Oct 21, 2019 11:57 am

Hello everyone,

I use my PicoScope 3206D with the streaming mode from the GitHub picosdk examples to get the data to LabVIEW (PicoScope3000aExampleStreaming.vi).
Now I have a pulse signal with a duration of 10ns and want to detect this signal with a sampling time of at least 1ns.
However, the smallest sampling time I could adjust is 8ns. When I try to define a value of 7ns or lower an undefined error (5043) occurred.

I want to know, if it is possible to get a sampling time smaller then 8ns with this setup and how I can achieve this.
If this is not possible, what can I do to get a lower sampling time?

Many thanks,
Fab
Attachments
Acquisition Settings (ExampleStreaming).png
PicoScope Sampling Error 5043.png

AndrewA
PICO STAFF
PICO STAFF
Posts: 252
Joined: Tue Oct 21, 2014 3:07 pm

Re: PicoScope 3000: Getting a sampling time of 1ns or lower

Post by AndrewA » Tue Oct 22, 2019 3:30 pm

Hi,

Code: Select all

Error code 5043 is (5043 - 5000) = 0x0000002B hex.
PICO_INVALID_SAMPLE_INTERVAL = The sample interval selected for streaming is out of range.

In streaming mode the 3206D is limited 125 MS/s (SDK) due to the USB controller in the scope.
This rate shared between all enabled channels.
125 MS/s is 8ns sample interval, or 16ns for two channels.

The actual sample Interval is returned back to after calling ps3000aRunStreaming() by reading sampleInterval and sampleIntervalTimeUnits.
Regards Andrew
Technical Specialist

Fab
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Posts: 0
Joined: Mon Oct 21, 2019 9:33 am

Re: PicoScope 3000: Getting a sampling time of 1ns or lower

Post by Fab » Fri Oct 25, 2019 8:20 am

Hi Andrew,

thanks for your quick and helpful answer.

Regards,
Fab

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