filiberto.clara@LIGO.ORG - posted 13:31, Tuesday 02 July 2019 (50348)
End Station E3074 Electrostatic Drivers Modified
Modified the EY ESD driver per E1900071. This adds a LP filter to reduce ESD bias noise due to DAC noise.
Replaced C26 with 10uf
Replaced R7&R8 with 10k ohm
Unit at EX was modified on 3-5-2019, alog 47308. Spare unit is also modified.
EX SN S1101848
EY SN S1101846
Spare SN S1101843