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I performed the PEM injection test with reference accelerometers

05:05 - 05:30 silent run

05:39:00 - 06:50:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, swept sine injection, 400 - 50 Hz, 1 Hz resolution, 10 s in each frequency, 40 cnt

06:53:00 - 06:58:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 80 - 220 Hz, 1000cnt

06:58:00 - 07:03:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 180 - 320 Hz, 1000cnt

07:03:00 - 07:08:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 280 - 420 Hz, 1000cnt

07:08:00 - 07:14:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 380 - 520 Hz, 1000cnt

07:14:00 - 07:19:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 480 - 620 Hz, 1000cnt

07:19:00 - 07:24:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_9_EXC
REF : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
Shaker 1, white noise injection, 580 - 720 Hz, 1000cnt

Locked loss happened

08:57:00 - 09:02:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 80 - 220 Hz, 1000cnt

09:02:00 - 09:07:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 180 - 320 Hz, 1000cnt

09:07:00 - 09:12:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 280 - 420 Hz, 1000cnt

09:12:00 - 09:17:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 380 - 520 Hz, 1000cnt

09:17:00 - 09:22:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 480 - 620 Hz, 1000cnt

09:22:00 - 09:27:00
EXC channel : K1:PEM-EXCITATION_MCF0_RACK_10_EXC
REF : K1:PEM-ACC_PSL_TABLE_PSL3_Z_OUT_DQ
Shaker 2, white noise injection, 580 - 720 Hz, 1000cnt

Memo :
We need to check more detail with investigation, I left the memo of notification during the injection test.
- There are linear peaks in IMC REFL channels (DC, RF14, RF14 WFS)
- There are small peaks in IMMT1 trans QPD (P > Y)
- There are small peaks in REFL RF445 I (PDA1,3), frequency dependence
- There would be resonant frequency at the perisope around 400 Hz and 600 Hz
- It is interesting to evaluate the transfer function reference accelerometer -> accelerometer on the periscope
ACC1 : K1:PEM-ACC_PSL_PORTABLE_1_OUT_DQ
ACC on the periscope : K1:PEM-ACC_PSL_PERI_PSL2_X_OUT_DQ
- There are small peaks in PMC OUT
channel : K1:LAS-POW_PMC_OUT
- Which IMC refl channel is the most impact to the DARM signal -> Ask PSL subsystem member
- Frequency dependence -> Evaluate the transfer function, but most IOO channels were lower sampling rate??

Fig.1. and Fig.2. and Fig.3. showed the several channels with the white noise injection, 280 - 420 Hz, 1000cnt.

All results can be found in
/users/PEM/diaggui/PEMInjection/Shakerinj_postO4/260212/