at 10:37 PDT the IOP model on h1oaf0 received a timing error, all models stopped running at this time(h1pemcs, h1oaf, h1tcscs, h1odcmaster and h1calcs). The calculated IFO range went to a high value and the DARM FOM display went noisy. Only one external model receives IPC from the h1oaf0 computer, h1omc has a dolphin channel from the calcs, these channels went into 100% error.

There was PEM work in the CER around this time, this could have been the cause of the glitch. All the models were restarted and all is running correctly now. The intent bit was not set during this time.