Problem:
c1ioo was not able to talk to c1sus because of timing issues. This prevented the mode cleaner length signal (MC_L) from getting to c1sus.
Solution:
The replacement c1ioo chassis from Downs with a more recent revision of the IO backplane works.
The c1ioo is now talking to c1sus and transmitting a signal.
We connected the cable hanging off the DAQ interface board labeled MC OUT1 to the MC Servo board's output labeled OUT1.
During debugging I modified the c1x02, c1x03, c1mcs and c1ioo codes to print debugging messages. This was done by modifying the /opt/rtcds/caltech/c1/advLigoRTS/src/fe/commData2.c file. I have since reverted those changes.
Future:
We still need to check that everything is connected properly and that the correct signal is being sent to the MC2 suspension.
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