J. Kissel

The renewed number of IPC errors caused by timing errors from the new fast SUS front ends are causing a problematic number of ISI trips when there are no suspension payload trips. I remembered questioning this issue back in March, and rediscovered that the BSC-ISIs are mishandling the error signals from the Dolphin IPC parts -- see the original identification of the problem LHO aLOG 17044. The state of the payload watchdog flag is still exactly as quoted in that aLOG.

We need to solve this problem, because it's unclear how/when we'll fix the timing errors on the SUS. I'm half-inclined to just make this change *now,* but after reading the aLOG, I don't remember which is the right way to fix the problem. I've tried calling Stanford, but I didn't get an answer, will send an email.