Reports until 11:22, Tuesday 12 November 2019
H1 ISC
marc.pirello@LIGO.ORG - posted 11:22, Tuesday 12 November 2019 (53184)
Repaired faulty readback, ASC AS_B_RF72 DEMOD

F. Clara, M. Pirello

We tested the readback channels out of the I&Q Demod chassis (S1001015) located at ISC-R3 position 11.  The outputs looked correct, so we followed the signal back to the concentrator chassis located in ISC-R5.  We discovered gender changers for both outputs of this chassis which were poorly attached.  This loose connection was the cause of the faulty readback.  We replaced the DB9 cables and eliminated the gender changers.  The new cables are ISC_SQ_306 and ISC_SQ_307 they were both changed from M-M to M-F.  This closes WP8465 and solves ALOG53030.