Reports until 15:14, Wednesday 14 September 2011
H2 SUS
jeffrey.garcia@LIGO.ORG - posted 15:14, Wednesday 14 September 2011 (1396)
FMY cabling complete
The cabling was completed today for the full FMY suspension system. The M1 - F1, F2, F3, & LF OSEMs were connected and their outputs verified on the medm screens. The cable of type D1000234 - 125" has a S/N of 900, which is then connected to an extension cable of type D1000225 - 199" with a S/N of 1104783. PEEK cable ties were used to consolidate the 12 cables from each OSEM into a bundle that runs up against the sleeve of the FMY. This bundle is then clamped to the BSC-ISI Optical Table using the new Cable Brackets.  The feed-through positioning did not allow for a "clean" path for the extension cable for the normal M1 - F1,F2,F3,&LF slot, so instead the "SPARE" slot was used in the feed-through.

In yesterday's aLog , the M2 OSEMs and the "RT" and "SD" OSEMs of M1 were connected and verified on the medm.  After unplugging and rearranging cabling today, the OSEM cables were reconnected but the M1 "SD" output in the medm screen did not read a "real" signal.  Reseating of the cable to the OSEM output was tried, but no difference in the output was noticed.  This is an issue to investigate after the SEI crew has completed re-balancing the ISI.