Reports until 02:57, Wednesday 26 October 2016
H1 ISC
sheila.dwyer@LIGO.ORG - posted 02:57, Wednesday 26 October 2016 (30882)
DBB plugged back in

This afternoon Kiwamu and I plugged the DBB back in.  When we did this, the PSL external shutter closed; Peter King said that it is a know issue that shutters close randomly when you power things on or off in those racks. 

I also took put a 1/100 divider on the BNC connector from the 18V rack power, AC coupled it with a 560 and plugged it into LSC_EXTRA_AI_1.  The plan is once we are locking to try another test of the DBB shutters, and see if it still has an impact on our nosie with the TCS and alingment changes from last weekend.