Greetings,
I am trying to use the PGA970EVM with a 4-wire RVDT sensor and I am unable to see a change in the phase angle (except for noise) when looking at the ADC capture from the provided GUI. I have tried numerous combinations of the GUI's ADC Interface controls to find success, but to no avail. I found this POST asking the same question (no posted solution) and I gather that the phase angle extraction feature should be working right out of the box.
I even tried a hooking up a second PGA970EVM kit but I am getting the exact same results on the ADC capture.
Please see the following attachments (hopefully they help):
- Screenshot of my ADC Capture plot from the GUI
- GUI Configuration file
- PGA970 jumper configuration table
- PGA970 external hookup schematic
- Oscilloscope capture of my primary and secondary waveforms
Can you try my configuration file on your setup? Do you get the same result?
Could you send a configuration file that you are confident works so I could try it?
Are my jumpers in the right places?
Thank you!