Report from last Friday
I tried to do the suspension health check as per the description. The purpose is to excite the mirror coils then check the transfer function to oplev pitch and yaw. If there is no coherence between the input excitation and the output then it is an obvious sign that a magnet has fallen off. However, I ran into some problems:
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The PR oplev is quite off center in pitch. The steering mirror at the output viewport of the PR oplev ran out of actuation when I tried to recenter the PSD. In the medm screen it was about 5000 counts off center. I don't have too much memory of TAMA oplevs so I am wondering if PR oplev pitch is a relatively common issue or not.
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After centering all of the other oplevs, I ran test.sh in the folder /TAMA_VIS/check_after_earthquake. However, the program kept giving test time out errors. I checked the disk space and it was nearly full, so I tried deleting all of the frame data in frames/trend/second and freed up about 25% of disk space. But the problem persisted.