Search found 4 matches

by justinis
Mon Jan 10, 2022 10:28 pm
Forum: C and C++
Topic: Cannot retrieve max samples from 4262
Replies: 2
Views: 2166

Re: Cannot retrieve max samples from 4262

That did it! Thank you!
by justinis
Thu Jan 06, 2022 6:16 pm
Forum: C and C++
Topic: Cannot retrieve max samples from 4262
Replies: 2
Views: 2166

Cannot retrieve max samples from 4262

I am trying to retrieve as many samples as possible from a picoscope 4262 in block mode. The datasheet says the buffer is 16MS. But when I try to retrieve that many samples (I'm using the C wrappers in python) the driver gives me a PICO_TOO_MANY_SAMPLES error. By trial and error I've discovered the ...
by justinis
Wed Nov 10, 2021 6:45 pm
Forum: Projects
Topic: Noise floor changes with timebase
Replies: 2
Views: 15963

Re: Noise floor changes with timebase

Thank you! I have come to similar conclusions. I think the scope drops samples to reduce the sample rate, which makes noise measurements inaccurate.
by justinis
Wed Oct 27, 2021 11:35 pm
Forum: Projects
Topic: Noise floor changes with timebase
Replies: 2
Views: 15963

Noise floor changes with timebase

I am collecting data using a 5444D picoscope. The input on the scope is shorted. I used python to make two different data collections (600K samples each) that were identical except the timebase for one was 6 and the other was 34. I created a PSD of the data using scipy.signal as follows: fs = 1/np.a...