J. Kissel, O. Patane
We've recovered all damping and alignment functionality for H1SUSMC1, H1SUSMC3, H1SUSPRM, and H1SUSPR3 (including turning on L, P. and Y Estimators for PR3); the HAM {Small, Large} Triple Suspensions (HXTS, HSTS, HLTS) on HAM2 after their host computer changed from h1sush2a to h1sush12 and their DACs were upgraded to a 32CH 28-bit LIGO DAC (see analog changes in LHO:88519 and software changes in LHO:88527).
The recovery was relatively simple for these suspensions:
- Untripped the software watchdogs for these HAM2 suspensions (H1:IOP-SUS_MC1_DACKILL_RESET, H1:IOP-SUS_MC3_DACKILL_RESET, H1:IOP-SUS_PRM_DACKILL_RESET, H1:IOP-SUS_PR3_DACKILL_RESET) and the HAM2 seismic system beneath it (H1:IOP-SEI_HAM2_DACKILL_RESET).
- Used SEI_HAM2 guardian to bring HAM2 SEI system to ISI_DAMPED_HEPI_OFFLINE (from them having had their watchdogs trip overnight).
- Left / made sure that SUS Guardians in SAFE and unmanaged
- Added a gain of 2^10 = 1024x in the COILOUTF banks in FM10 to compensate for the 18-bit DAC to 28-bit
- Turned off inputs to the COILOUTF, untripped watchdogs, turned MASTER SWITCH ON
- Added small 5 count offsets in COILOUTF, one-at-a-time, and sorted out the MEDM overview macro files***
- lower masses needed adjusted due to the consolidation of DACs
- Computer name changed from h1sush2a to h1sush12
- Tested functionality of binary IO by switching H1:SUS-{MC1,MC3,PRM,PR3}_BIO_{M1,M2,M3}_STATEREQ into various states confirming that the read backs switch correctly (and at this point, we just assume that the binary OUT is actually switching the coil drivers).
- With the SUS guardian still in SAFE, and the MASTER SWITCH still ON, and watching the top mass OSEMs on ndscope ^^^,
- Turned on damping loops one DOF at a time, to confirm that resonant motion exponentially decays as expected without any saturation (reminding ourselves that the DAC saturation limit is now +/-2^27 = +/- 134217728 [DAC ct]_{peak})
- Turned on alignment offsets to see a significant shift in top mass
- Seeing no issue, used the SUS guardian to bring the suspension to ALIGNED, then back to SAFE, then back to ALIGNED.
*** The MEDM overview macro files are
/opt/rtcds/userapps/release/sus/common/medm/
susmc1_overview_macro.txt
susmc3_overview_macro.txt
susprm_overview_macro.txt
suspr3_overview_macro.txt
^^^ Handy ndscope command line to quickly switch between 'scopes of the top mass EULER basis report of OSEM motion
$ optic=MC1;ndscope -k H1:SUS-${optic}_M1_DAMP_{L,P,Y}_IN1_DQ &