Reports until 16:32, Friday 05 September 2014
H1 SEI (CDS)
jeffrey.kissel@LIGO.ORG - posted 16:32, Friday 05 September 2014 (13785)
HAM4, HAM5 ISI Table Optical Levers in Front-End Model, (but not 4R'ed)
J. Kissel (after talking with R. McCarthy, J. Oberling, D. Barker, H. Radkins, J. Warner)

The ever useful ISI table optical levers for ISIHAM4 and ISIHAM5 are read out by the susham34 and susham56 computers. As such, one needs to distribute the the lever signals from the SUS computer to the desired consumer on the ISIHAM45 computer via the Dolphin network IPC. A long time ago, h1susmc2 had been determined as the "master" for the susham34 front end, and h1sussrm for the susham56, and therefore in charge of distributing optical lever signals, binary IO interactions, etc. As such, a similarly long time ago, I'd installed IPC senders for these optical lever signals from h1susmc2 and h1sussrm but receivers never made it into the h1isiham4 or h1isiham5 front-end models.

Jason has just now getting around to bringing these levers online, and he's discovered the lack of infrastructure in SEI land.

Realizing the problem and simple fix, I've installed the necessary parts in the top levels of the HAM4 and HAM5 (copied from HAM3, with the appropriate name changes). However, because we're already trying to commission six things at once today (SEI ITMX, REFL WFS, SR2 Coil Balancing, HAM5 HPI), and a DAQ / FB restarted did not sound appealing to anyone, we elected NOT to install and restart the front-end code with the new parts. However, I've confirmed the model compiles and committed it to the userapps repo. These models should be make-installed and the front-end process restarted at the next earliest convenience.

Also -- why don't these optical levers have their screens linked from the HAM ISI overview screen? I notice that the ISI levers are still using Ryan DeRosa's optical lever infrastructure (both in Simulink and MEDM) instead of the generic QPD part that all SUS and ISC use... The generic screen is independently linked from LHO's sitemap for HAM2 and 3.

*ahem*...