Jim and Dave. After the 2.8 upgrade this morning, we were able to remove the IRIGB pcie card from h1pemmx front end computer. Before the change the timing fiber went to an MX fanout, which in turn fed an IRIGB unit and the IO Chassis. The IRIGB in turn fed the FE PCIE card. Now the timing fiber connects directly to the IO Chassis, and there is no IRIGB card. We moved the single mode SFP from the timing fanout into the IO Chassis.

The IOP model had been changed to obtain its IRIGB time via the network from a remote EPICS IOC. We chose the GPS channel on the DAQ data concentrator H1:DAQ-DC0_GPS. The CDS block in the pemmx iop model has the parameter "remoteGPS=1" set.

On the first startup we got unlucky and started towards the end of the GPS second, which caused the DAQ DC to mark the front end with a 0x4000 timing error. On a second startup of the iop we got lucky and started close to the start of the second.

Note that the TIMING bit in the STATE_WORD for the IOP is RED because the IRIGB timing diagnostic is ZERO. I'll remove this bit from the overview because it no longer gives useful diagnostics.