Attached below are the results for the charge measurements performed on the ETMX and ETMY (post Oct 2019 vent break).

ETMX: There has been a definite rise in the charge accumulations on all 4 quadrant for the pitch and yaw mode. The first and the 4th quadrant for the pitch mode shows an average bias voltage of +40V and +20V respectively. The  bias voltage on the 2nd, 3rd and 4th quadrant for the pitch mode has jumped by 10-20V.  For the Yaw mode, the 1st and the 3rd quadrant are at 50V, which is quite high. The 3rd quadrant is just above 40V.

I will discuss these results with J. Kissel to see if we need to flip the sign yet.

ETMY: There hasn't been a huge change and the effective bias voltage on most of the quadrant has remained the same or declined. The biggest fall has been seen on the 2nd quadrant (Yaw). The rest of them are between 0-20V.

The slider values were restored after the measurement was complete, and any SDF difference was removed.