Reports until 17:11, Thursday 18 August 2016
H1 AOS (PSL, TCS)
benjamin.abbott@LIGO.ORG - posted 17:11, Thursday 18 August 2016 (29187)
ISS outer loop and TCS work
This week I installed the ISS Outer Loop chassis into H1-PSL-R1, and hooked most of its cables up.  The two AA cables for PDs 5-8 are not hooked up to an AA Chassis yet, and will be hooked up once the original servo is removed from the AA Chassis (The intention is to re-use one of the original ISS Outer loop servo's cables.)  With the PSL down, I was unable to do any system testing.  I have not disconnected any cables from the original servo, so it is still fully functional.  I made an medm screen in UserApps/psl/h1/medm/H1PSL_ISS_OL.adl  All of the new servo's functionality seems to be working.

The TCS system had a bad channel that I traced back to the AA Chassis, S1301168.  It turns out that 2 of the input buffers (U2 on channels 11 and 12) were bad.  I replaced them, and now everything works fine.  In the e-traveller, it seems that these chips have been replaced once before in February, 2015.  We should keep an eye on them.