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Fri Jun 2 00:54:08 2017, Koji, Update, ASS, Xarm ASS restoration work
Fri Jun 2 01:22:50 2017, gautam, Update, ASS, ASS restoration work
Wed Jun 7 14:11:49 2017, gautam, Update, ASS, Y-arm coil driver electronics investigation
Wed Jun 7 17:45:11 2017, gautam, Update, ASS, Y-arm coil driver electronics investigation
Thu Jun 8 02:11:28 2017, gautam, Update, ASS, Y-arm coil driver electronics investigation
Mon Jun 12 17:42:39 2017, gautam, Update, ASS, ETMY Oplev Pentek board pulled out
Wed Jun 14 18:15:06 2017, gautam, Update, ASS, ETMY Oplev restored
Thu Jun 15 01:56:50 2017, gautam, Update, ASS, ETMY Oplev restored
Tue Jun 27 16:11:28 2017, gautam, Update, Electronics, Coil whitening
Wed Jun 14 18:15:06 2017
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ETMY Oplev restored
I replaced the Pentek Generic Whitening Board and the Optical Lever PD Interface Board (D010033) which I had pulled out. The ETMY optical lever servo is operational again. I will post a more detailed elog with deviations from schematics + photos + noise and TF measurements shortly.
As part of my Oplev servo investigations, I have pulled out the Pentek Generic Whitening board (D020432) from the Y-end electronics rack.
ETMY watchdog was shutdown for this, I will restore it once the Oplev is re-installed.