Stefan logged yesterday that he was unable to get the ISI into operation state without tripping.

First time I did this today, I did Stage2 one dof at a time and had no problem.  The ETMx blends at 750mHz on both Stages all dofs.  Pretty sure this isn't as well as can be squeaked from the ISI.  I took this opportunity to take spectra as I brought other blend filters to bare.  Attached is the Stage2 GS-13 X In1 with various filter combos.

Ref3, red: As found 750mHz all dofs both Stages.

Ref7, blue: T(rilliums)750mHz all dofs Stage1, 750mHz Stage2---Maybe a factor of 2 improvement below 0.5Hz

Ref11, green: T250mHz all dofs Stage1, 750mHz Stage2---Much better above 0.5Hz but worse between ~.1 and 0.5Hz.

Ref15,thick brown: T100mHz.44NO Stage1 X Y & Rz else T250s, Stage2 750mHz---Big win below 1Hz to about 0.1Hz.

Ref18, pink:T100mHz.44NO Stage1 X Y & Rz else T250s, Stage2 250mHz---Better ~x2 or 4 above 0.8 but worse below especially 0.2Hz.

Ref23, aqua: T100mHz.44NO Stage1 X Y & Rz plus Notch X Y else T250s, Stage2 750mHz---Lost improvement above 0.8Hz but improves over brown between 0.8 and 0.2Hz.

Ref28, black: T100mHz.44NO Stage1 X Y & Rz plus Notch X Y else T750s, Stage2 750mHz---Some improvements below 0.2Hz and some above 1Hz.

I'm not sure this is exactly the best configuration such as maybe the T250 is better than the T750 for both Stages.  Certainly incrementally there were tradeoffs.  We need to combine the benefits in a better way.

So I have the ISI in this final arrangement. I took the ISI out of Isolation (it triggered then!)  I then reset the ISI targets to the unisolated postions.  The ISI was then able to go into Isolation with 'One Button'.  Green team is evaluating if they can live with this minor alignment change.