Tool/software:
I'm using the ADS131M08EVM and software, I configured a channel to use DC test voltage signal.
When I take the capture, the GUI voltage scale is not updated correctly, its showing 0.154V to 0V total range.
I noticed the measurement (and codes) are tighter and more closer to expected ~0.16V from the test signal and I can get closer to this value with gain calibration.
Once I toggle the Y scale fit parameter the secondary axis corrects itself.
Just an issue with software, maybe need to update the loop to rescale that secondary Y scale.
Hope this helps,
-Orlando
