J. Kissel

I've confirmed that the ESD on H1 SUS ETMY (turned on earlier today, see LHO aLOG 15809) is functional by driving a 4 [Hz], 30000 [ct_pk] sine wave into each quadrant using awggui, and measuring the response in the ETMY optical lever. There is clear amplitude and coherence in pitch and yaw when driving each quadrant.

Other less exciting notes, regarding the functionality of the whole ESD system:
- Remember that the front-end code is still in correctly ordered, but Richard McCarthy assures me that instead of wiring up what had made sense in analog, he has switched the inputs at the ESD driver such that the front end drives the right channels, i.e. the front end's DC bias, which drives the ESD driver's channel 1 is connected to pin 3, all the way to the ESD pattern in chamber as per Filiberto's aLOG (see LHO aLOG 15656), and the remaining quadrants are hooked up identically to how they're hooked up at ETMX and in the two LLO quads. Once Rich Abbott solidifies a drawing of what has been implemented at H1 EY, then the changes will be propogated elsewhere and the front end models will be fixed. Maybe, eventually. But the important statement, again, is that all 4 ETMs are now wired up in the same fashion, such that the front-end drives each quadrant in the same way. Until the analog monitors are functional and I get Rich's drawing, I don't want to add more confusion by attempting to make a channel order. Thank god, when it counts, we only ever use these things in longitudinal driving all four quadrants at once.
- The ESD analog monitor channels, e.g. H1:SUS-ETMY_L3_ESDAMON_LL_MON, are completely non-functional, they don't report change regardless of bias value or excitation on each quadrant.
- The ESD driver's digital monitor signals also don't report anything but ADC noise, *except* for the "MCU" channel, H1:SUS-ETMY_L3_ESDDMON_MCU_MON, which is a 1 [Hz], 3460 [ct_pkpk] sine wave.

DTT Templates for this measurement live here:
/ligo/svncommon/SusSVN/sus/trunk/QUAD/H1/ETMY/SAGL3/Data/
2014-12-23_H1SUSETMY_ESD_biasp9p5V_excLL.xml
2014-12-23_H1SUSETMY_ESD_biasp9p5V_excLR.xml
2014-12-23_H1SUSETMY_ESD_biasp9p5V_excUL.xml
2014-12-23_H1SUSETMY_ESD_biasp9p5V_excUR.xml