Clearly the power calculation is operating from a different internal current readout value, as it doesn't vary as widely.
Below is a list of current values shown on the screen from the start of the capture:
770.0 mA
610.0 mA
740.0 mA
520.0 A
460.35 mA
730.35 mA (briefly, half update)
730.0 mA
1.0 mA
670.0 A
550.0 mA (briefly, half update)
550.09 mA
530.09 mA (briefly, half update)
530.0 mA
840.0 mA
970.0 mA
970.3 mA
790.3 mA
790.3 A (briefly, half update)
790.0 A
470.0 mA
prasimix
commented
2 years ago
When driving a noisy/peaky load like a stepper motor driver, the DCM224 front panel current readout isn't consistent.
Here's a short video showing the issue: https://www.dropbox.com/s/r5a9zkj52qxuub2/2021-11-02%2017.54.50.mp4?dl=0
Clearly the power calculation is operating from a different internal current readout value, as it doesn't vary as widely.
Below is a list of current values shown on the screen from the start of the capture: