jeffrey.kissel@LIGO.ORG - posted 11:50, Wednesday 05 March 2014 - last comment - 12:12, Wednesday 05 March 2014(10539)
H1 ISIS ETMX Trips while using SWITCH ALL from
For the records. GPS time 1078083583. Tripped on Actuators. Level 2 isolation on both stages, no ST1-ST2 sensor correction on. Had been running on "Start" blends on both stages for quite some time, T240s were pleasantly green. Tried moving ST1 from "Start" to "TCrappy", tripped halfway through on actuators. First glitch in captured screen show is start of switching third spike killed it. Since glitch appears much larger in horizontal, we'll try switching vertical first (Z, RX, RY), then horizontal (X, Y, RZ).
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Blending from "Start" to "TCrappys" on verticals (Z, RX, and RY) then horizontals (X, Y, and RZ) worked much better. I've tried twice (thanks to another trip from unstable ST1 ST2 SC). We should change the SWITCH ALL script to performed the blend switching as such. Note that it also might be the difference between starting the switch process at human-button-click speed vs. computer speed, so we might wanna consider staggering the start of the blend switching.