This is series work of
klog#24725 (IY), klog#24726 (IX), klog#24919 (EY), klog#25011 (EX),
klog#24916 (BS), klog#26129 (SR3), klog#26230 (SRM),
klog#25009 (PR2), klog#25886 (PR3), and klog#26205 (PRM).
We tried to measure DAC noise of SR2 and could measured only noise level at outputs of Anti-Imaging for the TM stage.
According to this measurement shown as Fig.1, DAC or AI noise for TM_H3 (K1:IOP-SR2_MADC0_TP_CH5) seems to be ~10 times louder than other coils.
Noise level of a measurement system (cable + whitening + AA + ADC) shown as the reference ASD (black curve) is same among 4 channels.
So the noise excess on TM_H3 (CH5) should come from AI or DAC.
Remaining measurements were postponed due to a Dolphin trouble and a recovery work.
And also, investigation of the noise source on TM_H3 should be done in the next time.
Because I cannot have a time for this work for a while (maybe until 9/29), it may be better to take over this work to someone if it's required for noise budget.
