2025/04/07 7:27:00 - 08:03:00 Magnetic injection center area
Excitation : K1:PEM-EXCITATION_IY0_RACK_1_EXC
50 - 900 Hz , 5Hz resolution, 10 s in each measurement, 20 cnt
Fig.1. showed the whitening spectrogram
Three IPC glitch like signal detected (18, 24, 29 min)
Large signal detected in 10 min, but we need to check it caused by magnetic injection or not
In other frequency, no significance excess detected.
2025/04/07 8:39:00 - 09:14:00 Shaker injection #1 PR3 bellows leg
Excitation : K1:PEM-EXCITATION_MCF0_RACK_7_EXC
50 - 900 Hz , 5Hz resolution, 10 s in each measurement, 100 cnt
Fig.2. showed the whitening spectrogram
Two IPC glitch like signal detected (6, 20 min)
In other frequency, no significance excess detected.
2025/04/07 9:14:00 - 09:48:00 Shaker injection #2 PR3 bellows leg
Excitation : K1:PEM-EXCITATION_MCF0_RACK_8_EXC
50 - 900 Hz , 5Hz resolution, 10 s in each measurement, 100 cnt
Fig.3. showed the whitening spectrogram
Three IPC glitch like signal detected (5, 25, 31 min)
In other frequency, no significance excess detected.
