Reports until 20:33, Monday 15 February 2016
H1 ISC
sheila.dwyer@LIGO.ORG - posted 20:33, Monday 15 February 2016 (25548)
some DRMI acquisition settings

Den made some modifications to our DRMI that he thinks might help us lock faster.  

We had all of our integrators zero history immediately, Den added 1 second ramps to the 4:0 in MICH and the 10:0.1 in PRCL with the idea that this can reduce transients when they turn on. 

He also changed our triggering so that SRCL and MICH are triggered together at 20 counts off at 10 coutns (this is about 1/3 of the power build up of POP18).  Before SRCL was triggered at 2 counts.

Den also increased the PRCL gain from 11 to 15, removed the triggering of PRCL FM3 (10:0.1) and engaged it by hand after it locked. (the idea for higher gain being that it is better to supress PRCL well in the SRCL error signal).

He set the SRCL gain to -20 from -45.  

DRMI locked in about two minutes.  Its probably worth testing these settings out more and maybe making an alternate DRMI locking guardian state for testin new settings to see if we can reliably get a faster DRMI time.