MIF (General)takaaki.yokozawa - 9:47 Tuesday 11 February 2025 (32632)
Print this reportSearch the peaks around 1st violin modeSince we can keep the observation state for a long time, we evaluated the peak frequencies around 1st violin mode. 2025/02/10 18:00- 512s FFT length, 10 times average, 50% overlap
I summarized the peak frequencies checked by my eye (Fig.1., Fig.2. and Fig.3.)
takaaki.yokozawa - 16:56 Tuesday 11 February 2025 (32642)
Print this reportI tried to identify the peaks which come from (IX, IY, EX and EY) by exciting the IM_P one by one.
166.84375 EYIMP 11:01:10 167.26562 NOEYIMP 167.8125 Locked loss when EYIMP excited(Two times) 168.3125 EYIMP 12:20:00 173.20312 NOEYIMP 174.28125 NOEYIMP
There would be the non violin mode peaks ~180 Hz power line Three OMC bread resonant frequency *2 ~89.6 * 2 = ~179.2 ~90.8 * 2 = ~181.6 ~91.1 * 2 = ~182.2
takaaki.yokozawa - 7:14 Wednesday 12 February 2025 (32643)
Print this report[Komori, Yokozawa]
We can excite most part of the peaks by exiting the IM P.
187.53125 EYIMP 11/13:34:00 189.92188 EYIMP 11/13:08:00 191.15625 EYIMP 12/06:29:00 exite 191.375 after stop the excitation (Fig.1.) 191.375 EYIMP 11/12:58:00
Images attached to this comment
dan.chen - 14:05 Thursday 03 July 2025 (34443)
Print this report
With Hiroshi Takaba,
We put the suspension name on the figures reported on klog32632. We did not do any analysis, but just read this klog and put the suspension names on the figures.