Why are Python sample code and GUI scope values different in analog discovery2?

[Sangkyu Choi]

Hi!

I'm measuring the voltage value in my circuit.

But, The GUI scope value finely differs from the python sample code.

I use the 'AnalogIn_Record.py' code for Python example.

Can you tell me why it's different?

Help..me..please...

 

Edited June 2, 2021 by Sangkyu Choi
Title error

[attila]

Hi @Sangkyu Choi

The sample rate is probably different and regarding the noise band see the following post:

 

Edited June 2, 2021 by attila

[Sangkyu Choi]

The sample rate is the same and the noise in the gui is removed, but it comes out differently.

Shouldn't GUI and python sample code come out the same?

[attila]

Hi @Sangkyu Choi

Have you adjusted the channel vertical range? like:
dwf.FDwfAnalogInChannelRangeSet(hdwf, c_int(0), c_double(5))
By default the 50V pk2pk range is used which has lower resolution.

[Sangkyu Choi]

Thank you so much!! !!