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This measurement is done lasers disabled. The PD supplies a constant current to the preamplifier (SR570), and then the voltage goes into FPGA.
===== X noise (time domain) =====
===== X noise (frequency domain) =====
===== Y noise (time domain) =====
===== Y noise (frequency domain) =====
===== X noise (time domain) =====
===== X noise (frequency domain) =====
===== Y signal (time domain) =====
===== Y signal (frequency domain) =====
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