Earlier this week there was a HAM1 HEPI trip at LHO, not sure why. Robert was working near HAM3, that was the only activity. WD says the actuators saturated, but I can't find any evidence of it. 

It looks like a one point there were 6 total actuator saturations, but they must have happened too fast to show up in the 512hz MASTER_OUT channels? Attached plot shows the time when the ACT SAT COUNT channel (16hz) (bottom right) went from 0 to 6. The corner 2 L4Cs see something, there is a burst of something in the actuators (top 2 plots on the left column), but they don't seem to get anywhere near saturating. Something like this happens again less than an hour later and trips the HEPI, breaking the lock.

Second image is the same channels, from before the first act saturations to after the trip. Still no evidence of actuator saturations anywhere in this data. The only way I can make sense of this is somehow we had actuator saturations that were too fast to be recorded in the 512hz MASTER OUT channels, but whatever caused them, don't  seem to show up in the 3d l4c channels on the L4Cs on the floor under the chamber.