DigitalOut_Duty.py

[Ostin Flores]

Hi,

I want to generate a PWM signal that changes frequency, Amplitude and Duty Cycle. I am using the "DigitalOut_Duty.py" Provided inside the SDK folder which seems to work fine until I increase the frequency then my signal shrinks as shown in the attachment. There is a comment in the code saying "# for low frequencies use divider as pre-scaler to satisfy counter limitation of 32k". I tried messing with this number and I still get bad results. Can someone please guide me in the right direction?

 

[attila]

Hi @Ostin Flores

Your oscilloscope capture looks AC coupled and attenuated.
Do you have proper ground connection between the device and scope ? Could you attach a photo from the setup ?

[Ostin Flores]

Hi @attila,

I set up the scrip on my work bench and it seems to be working ok now. Maybe there was an intermitent connection. I had my input measurement DC Coupled last time as well

Edited November 10, 2023 by Ostin Flores