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PEM (Center)
takaaki.yokozawa - 7:50 Thursday 22 June 2023 (25670) Print this report
Measuring data for testing the offline noise subtraction
To investigate the offline noise subtraction, especially non-linear noise subtraction, we added the oscillation to PR3 mirror and took data

Before this measurement, I measured the DARM OLG, as shown in Fig.1.

data1 : PR3 pitch oscillation
Date : 2023/06/22 05:17:00 - 05:47:00 (JST)
To record the main oscillation siganl, we injected the line signal from BPC model.
K1:BPC-PIT_PR3_OSC_FREQ = 490.1
K1:BPC-PIT_PR3_OSC_CLKGAIN = 30
Fig.2. showed the spectrum during measurement
You can find the oscillation signal in
K1:VIS-PR3_TM_DRIVEALIGN_P_OUT_DQ

data2 : PR3 yaw oscillation
Date : 2023/06/22 05:50:00 - 06:20:00 (JST)
To record the main oscillation siganl, we injected the line signal from BPC model.
K1:BPC-YAW_PR3_OSC_FREQ = 590.1
K1:BPC-YAW_PR3_OSC_CLKGAIN = 30
Fig.3. showed the spectrum during measurement
You can find the oscillation signal in
K1:VIS-PR3_TM_DRIVEALIGN_Y_OUT_DQ

data3 : Reference measurement
Date : 2023/06/22 06:20:00 - 06:50:00 (JST)

data4 : PR3 pitch oscillation
Date : 2023/06/22 06:51:10 - 07:20:10 (JST)
To record the main oscillation siganl, we injected the line signal from BPC model.
K1:BPC-PIT_PR3_OSC_FREQ = 590.1
K1:BPC-PIT_PR3_OSC_CLKGAIN = 30
You can find the oscillation signal in
K1:VIS-PR3_TM_DRIVEALIGN_P_OUT_DQ

data5 : PR3 yaw oscillation
Date : 2023/06/22 07:21:20 - 07:51:20 (JST)
To record the main oscillation siganl, we injected the line signal from BPC model.
K1:BPC-YAW_PR3_OSC_FREQ = 490.1
K1:BPC-YAW_PR3_OSC_CLKGAIN = 30
You can find the oscillation signal in
K1:VIS-PR3_TM_DRIVEALIGN_Y_OUT_DQ

After this measurement, I requested to OBSERVATION state
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