It seems that since the last power glitches, the DBB is back to operational status... hmmmm. That is to say, before the power glitches it was unusable due to the mysterious tripping of the (dbb) interlock when trying to open the beam path into the box. In the past week I've been trying to get good measurements. This was a abit daunting due to the ISS 3rd loop work that was breaking the IMC lock consistently and yanking on the LASER frequency. Below is what I could muster over the course of a couple of days. ISS_RPN will come later as Peter is currently in the enclosure and working on it.

Comments:

RPN - 35W path looks suspiciously good accross the spectrum by a factor af a few...hmmm?   200W path looks tyo be below requirement from 2Hz to ~25Hz and then above to about a factor of a few through high(er) frequencies.

FRQ -  35W path is quite noisy at low freq (below 15Hz). Other than that the rest looks good save for the usual resonances. 200W path looks ok across the spectrum except for the usual resonances.

PNT - 35W path pointing looks pretty good. 200W path shows seperation  of the 1x/y and 2x/y  by a factor of a couple.

MSC - 35W path shows TEM 20 +02 an order of magnitude higer than reference. 200W path shows TEM 02+02 mode higher by a factor of a couple.