The result from AI Chassis bypass test showed that the AI Chassis may be the problem. There are no spikes from DAC's direct output.
All chassis except timing chassis are turned off. Power supplies for 24V, 18V, and -18V are turned off
The AI chassis has been taken out of the rack for further inspection
Refer to:
https://dcc.ligo.org/LIGO-E2300117
https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?.submit=Identifier&docid=D2300124&version= |