[Jenne, DaveB, RyanC, Jason, Betsy, Jennie, Keita, Fil, Marc]

Several folks prepping to align optics for HAM1 work noticed at about the same time that several HAM1 and HAM2 suspensions were not behaving as expected.  Eg, I tried misaligning and aligning PR3, but nothing happened (I did this because the sliders hadn't changed, but the OSEM readbacks had changed).  The team prepping to go into chamber similarly noticed that there were no counts going out to the IOP models.

Fil and Marc had a quick look at the sat amps for the HAM2 suspensions (just in case, even though no one had been near them), and everything looked fine.

Upon going back to the control room, I finally noticed on the CDS overview screen that IOPSUSH12 had its DAC Kill light illuminated. After some clicking around, we found the dac kill watchdog screen, and hit RESET.  However, PM1's RMS was still larger than threshold, because HAM1 is at air and the purge air is on, so its undamped motion was too high.  I clicked BYPASS on PM1, which let signal go through to damp PM1.  PM1 quieted down, and I un-bypassed it by hitting RESET again. 

At this point, it seems like all of the suspensions on HAMs 1 and 2 are again behaving as expected.