Reports until 09:25, Tuesday 09 August 2022
H1 ISC (ISC, SEI, SUS)
jeffrey.kissel@LIGO.ORG - posted 09:25, Tuesday 09 August 2022 (64381)
SDF Reconciliation Before 20-Bit DAC Upgrade for SRM and SR2
J. Kissel

In prep for the restart of sush34 and sush56 this morning and the upgrade of the DACs for the M2 and M3 stages of SRM and SR2, I reconciled the SDFs of the suspensions and seismic systems that will be impacted. Recall, from Austin's handy Front-end Computer to Suspension Map D2100766, one can see that a *LOT* of suspensions will be brought offline today as a result, even though SRM and SR2 are the only ones that actually receive hardware changes:
    - h1sush34
        ham3 isi/hepi (not restarted, but brought to ISI_DAMPED_HEPI_OFFLINE)
            MC2 in HAM3
            PR2 in HAM3
        ham4 isi/hepi (not restarted, but brought to ISI_DAMPED_HEPI_OFFLINE)
            SR2 in HAM4
    - h1sush56 
        ham5 isi/hepi (not restarted, but brought to ISI_DAMPED_HEPI_OFFLINE)
            SR3
            SRM
            OFI
            ZM6
        ham7 isi (no hepi, so ISI manager brought to DAMPED)
            ZM5
            ZM4
        ham6 isi/hepi (not restarted, but brought to ISI_DAMPED_HEPI_OFFLINE)
            OM1
            OM2
            OM3
            OMC

So, as a result, I reconciled the following:
    ham3 isi/hepi - Looks like Jim changed blend filters on Jun 16th from FM8 to FM10. Accepted this in the OBSERVE.snap only.
        -  Accepting Elenna and Evan's work reshuffling HSTS damping loop filters LHO:64194. Also accepted the current alignment sliders.
        - PR2 Accepting Elenna and Evan's work reshuffling HSTS damping loop filters LHO:64194. Also accepted the current alignment sliders.
    ham4 isi (nothing to reconcile)
       - SR2 (nothing to reconcile). Also accepted the current alignment slider values.
    ham5
       - SRM
            - Accept Sheila's work for installing DAC offsets on all the quadrants of M2 and M3 stages, see two screens worth of accepting: the values and ramps and then the actual buttons being on (LHO aLOG 64326)
            - Separately accepting Elenna and Evan's work reshuffling HSTS damping loop filters LHO:64194. 
            - REVERTED the outputs of the M3 DITHER banks being ON -- probably turned on for a test, but have been stagnant since July. Did this for PRM too.
            - Also accepted the current alignment sliders.
       - SR3 (nothing to reconcile). Also accepted the current alignment sliders.
       - OFI Accepted Alignment Slider Values
       - OMC / OM1 / OM2 / OM3 Alignment Slider Acceptance (includes OFI)
    ham7 isi accepting a vertical offset change
       - ZM4 ZM5 
       
    Unaffected models that I accepted the SDF changes anyways:
       ham2 PRMAccepting Elenna and Evan's work reshuffling HSTS damping loop filters LHO:64194. Also accepted the current alignment sliders.

In short, I accepted: 
     - Alignment sliders
     - HSTS damping loop filter reschuffle
     - SRC DAC offsets
     - HAM3 ISI blend filter change
     - HAM7 vertical position offset
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