Reports until 09:06, Wednesday 01 August 2018
H1 SEI
hugh.radkins@LIGO.ORG - posted 09:06, Wednesday 01 August 2018 (43170)
GS13 gain/whitening switching failure--more tests

FRS 11049

After DaveB swapped the BIO card from the I/O chassis, we tested the switching and saw no change in the behavior: switch worked fine with python command and HAM2 failed the switch when attempted by guardian.

After the swap, I isolated the ISI where the gains remained in the SAFE state.  The gain/whitening where then switched to the run state (analog gain & whitening) with the COMMANDS python script; this switch worked fine.  I then modified the guardian code for HAM2 to do the switching and changed the requested state to damped and the the platform trip immediately when guardian changed the gain & whitening filters.  Likewise when going back to isolated, the platform tripped when the filters were changed.

Bottom line, no change in behavior with the new BIO card.