This afternoon, HAM6 ISI tripped all on it's own, seems like it was probably some sort of glitch in the CPS. Attached trip plot shows all 4 cps in one satellite rack see a sharp spike, that the other 2 CPS don't see. The GS13s also don't see this spike, suggests to me it wasn't real motion and has something to do with satellite rack. Looking at trends of the HAM6 wd, there have been 2 other trips on the HAM6 since the beginning of the month. More investigation is required.