WP11542 EX -18VDC Power Supply Replacement

Fil, Erik:

Towards the end of maintenance, coincidentally 2 seconds before the EDC was restarted, the -18V EX SEIS power supply failed. This caused all of the ADC channels to read 0.0 counts.

Fil and Erik replaced the power supply with a spare unit.

WP11534 h1digivideo1 causing flashing-blue-screens

Jonathan, Patrick, Dave:

Since the upgrade of sw-msr-h1aux last week most, if not all, of the cameras on h1digivideo1 flash their gstreamer viewers periodically with a blue screen. Last Friday I restarted MC1's server process, which did not fix that camera's viewers. First thing today I rebooted h1digivideo1, which did not change anything. This was not surprising, all the server machines were rebooted last Tuesday following the switch upgrade.

Looking at the port statistics on sw-msr-h1aux for the h1digivideo[0,1,2] connections we found that h1digivideo1's VLAN106 port (1/1/16) had a 54% utilization and a dropped packet count of about 9000. Comparing this with the other two machines, which had utilizations around 20% and only dozens of dropped packets.

Jonathan unplugged the ethernet cable for the VLAN106 at both h1digivideo1 and the sw-msr-h1aux ports. The cable appeared to have been seated correctly.

The utilization dropped from 54% to 42% and we have not seen any blue flashes on h1digivideo1's cameras. We will continue to monitor.

WP11541 Add Lock Loss Alert IOC channels to DAQ

Dave:

I created a H1EPICS_ALERT.ini file which contains all of the non-string EPICS records in the lock loss alert IOC. A EDC+DAQ restart was required.

DAQ Restart

Dave, Jonathan:

The DAQ and EDC were restarted. The restart process was interrupted by the loss of h1seiex coincident to the EDC restart, which required some investigation to ensure it was a complete coincidence.

Other than that, and gds1 requiring a second restart, it was a unremarkable restart.

EDC channel count increased by 1082 channels from 56469 to 57551