I wanted to see if our ETMY F2P problems were saturation related. So I looked at the current monitors for the L1 OSEMs.
One thing that was quickly noticed is that while the three others show <100 counts in the readback when there is no drive signal, the LR coil shows -4000 counts. (For scale, saturation occurs around 13000 counts for the three normal looking coils).
This would seem to indicate some problem, possibly removing a third of our range in one direction of one of our coils. However, when you actually drive the coils to saturation, they all seem to have the same range from the point of view of the DAC, just with LR readback offset from zero by 4000 counts.
So this could just be a problem in the readback, not clear without looking at the analog electronics.