Fil, Betsy

Today Fil and I did a quick repeat of T2200048 HAM7 ground loops check just before doors are going on.

Last checks were done:

Feb this year by Camilla/Sheila https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=89048

Feb 2022 Fil/me https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=61738

Keita had done them prior, hence the document.

We basically found the same results as Camilla/Sheila namely:

• ISC_SQ_479 and ISC_SQ_480 have pins 13 and 23 connected 
• ISC_SQ_483, ISC_SQ_303 and ISC_SQ_481 have pin 13 and rack ground connected 

All the rest were "open".