Reports until 09:04, Friday 31 July 2026
H1 CDS
david.barker@LIGO.ORG - posted 09:04, Friday 31 July 2026 - last comment - 09:16, Friday 31 July 2026(91346)
h1sush12 IPC ethernet fiber and switch SFP swap

Jonathan, EJ, Erik, Dave:

The first step in fixing h1sush12's IPC errors is to replace the fiber and switch SFP. I've put SEI SWWD for HAM1 and HAM2 into bypass mode in preparation for this.

Jonathan will perform the swap in the MSR.

This will be a hot-swap, no models need to be fenced, stopped or computers rebooted. Very different from the "Dolphin crash" days.

Comments related to this report
david.barker@LIGO.ORG - 09:12, Friday 31 July 2026 (91347)

Here is the CDS overview while h1sush12's fiber/SFP are being swapped out.

Images attached to this comment
david.barker@LIGO.ORG - 09:16, Friday 31 July 2026 (91348)

Replacement completed. I have unbypassed the SWWD for SEI HAM1 and HAM2.

Jonathan replaced the original fiber FMM-02M-1120 and installed FMM-02M-1111. sw-msr-ipc0 port3 SFP was replaced.