Reports until 18:27, Monday 02 July 2018
H1 SUS (ISC, SUS)
jeffrey.kissel@LIGO.ORG - posted 18:27, Monday 02 July 2018 (42740)
Re-Balance of H1SUSETMX UIM/L1 Stage Actuators
J. Kissel

I've balanced ETMX UIM/L1 coils using the demodulated optical lever method (LHO aLOGs 11392 and 9453). 

I'll characterize in more detail tomorrow, but here are the results:

      Former          New
UL   -0.965868       -0.998394
LL   +1.00386        +0.974717
UR   -0.995864       -1.02572
LR   +1.03386        +1.00139

Recall that the signs are funky on UR and LR because we think the polarity of these two channels are flipped in hardware (see LHO aLOG 42732, and IIET Ticket 10998).
Images attached to this report