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Here's the characterization data and fit results for S1100148, assigned to ITMY L2's ULLLURLR OSEMs.

This sat amp is a UK 4CH sat amp, D0900900 / D0901284. The data was taken per methods described in T080062-v3, using the diagrammatic setup shown on PAGE 1 of the Measurement Diagrams from LHO:86807.

The data was processed and fit using ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
plotresponse_S1100148_ITMY_L2_ULLLURLR_20250917.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are:

`Optic`	`Stage`	`Serial_Number`	`Channel_Number`	`OSEM_Name`	`Zero_Pole_Hz`	`R_TIA_kOhm`	`Foton_Design`
`ITMY`	`L2`	`S1100148`	`CH1`	`UL`	`0.095:5.19`	`120.5`	`zpk([5.19],[0.095],1,"n")`
			`CH2`	`LL`	`0.0957:5.24`	`120.0`	`zpk([5.24],[0.0957],1,"n")`
			`CH3`	`UR`	`0.0958:5.24`	`120.125`	`zpk([5.24],[0.0958],1,"n")`
			`CH4`	`LR`	`0.0967:5.28`	`120.375`	`zpk([5.28],[0.0967],1,"n")`

The attached plot and machine readable .txt file version of the above table are also found in ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/
2025-09-17_UKSatAmp_S1100148_D0901284-v5_fitresults.txt

Per usual, R_TIA_kOhm is not used in the compensation filter -- but after ruling out an adjustment in the zero frequency (by zeroing the phase residual at the lowest few frequency points), Jeff nudged the transimpedance a bit to get the magnitude scale within the ~0.25%, shown in the attached results. Any scaling like this will be accounted for instead with the absolute calibration step, i.e. Side Quest 4 from G2501621, a la what was done for PR3 and SR3 top masses in LHO:86222 and LHO:84531 respectively.

Here's the characterization data and fit results for S1100119, assigned to ETMX L2's ULLLURLR OSEMs.

This sat amp is a UK 4CH sat amp, D0900900 / D0901284. The data was taken per methods described in T080062-v3, using the diagrammatic setup shown on PAGE 1 of the Measurement Diagrams from LHO:86807.

The data was processed and fit using ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
plotresponse_S1100119_ETMX_L2_ULLLURLR_20250916.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are:

`Optic`	`Stage`	`Serial_Number`	`Channel_Number`	`OSEM_Name`	`Zero_Pole_Hz`	`R_TIA_kOhm`	`Foton_Design`
`ETMX`	`L2`	`S1100119`	`CH1`	`UL`	`0.0949:5.19`	`120`	`zpk([5.19],[0.0949],1,"n")`
			`CH2`	`LL`	`0.0971:5.32`	`120`	`zpk([5.32],[0.0971],1,"n")`
			`CH3`	`UR`	`0.0964:5.27`	`120`	`zpk([5.27],[0.0964],1,"n")`
			`CH4`	`LR`	`0.0957:5.23`	`120`	`zpk([5.23],[0.0957],1,"n")`

The attached plot and machine readable .txt file version of the above table are also found in ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/
2025-09-16_UKSatAmp_S1100119_D0901284-v5_fitresults.txt

Per usual, R_TIA_kOhm is not used in the compensation filter -- but after ruling out an adjustment in the zero frequency (by zeroing the phase residual at the lowest few frequency points), Jeff nudged the transimpedance a bit to get the magnitude scale within the ~0.25%, shown in the attached results. Any scaling like this will be accounted for instead with the absolute calibration step, i.e. Side Quest 4 from G2501621, a la what was done for PR3 and SR3 top masses in LHO:86222 and LHO:84531 respectively.

Here's the characterization data and fit results for S1100118, assigned to ITMX L2's ULLLURLR OSEMs.

This sat amp is a UK 4CH sat amp, D0900900 / D0901284. The data was taken per methods described in T080062-v3, using the diagrammatic setup shown on PAGE 1 of the Measurement Diagrams from LHO:86807.

The data was processed and fit using ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
plotresponse_S1100118_ITMX_L2_ULLLURLR_20250916.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are:

`Optic`	`Stage`	`Serial_Number`	`Channel_Number`	`OSEM_Name`	`Zero_Pole_Hz`	`R_TIA_kOhm`	`Foton_Design`
`ITMX`	`L2`	`S1100118`	`CH1`	`UL`	`0.0966:5.27`	`120`	`zpk([5.27],[0.0966],1,"n")`
			`CH2`	`LL`	`0.0961:5.25`	`120`	`zpk([5.25],[0.0961],1,"n")`
			`CH3`	`UR`	`0.0963:5.26`	`120`	`zpk([5.26],[0.0963],1,"n")`
			`CH4`	`LR`	`0.097:5.3`	`120`	`zpk([5.3],[0.097],1,"n")`

The attached plot and machine readable .txt file version of the above table are also found in ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/
2025-10-14_UKSatAmp_S1100118_D0901284-v5_fitresults.txt

Per usual, R_TIA_kOhm is not used in the compensation filter -- but after ruling out an adjustment in the zero frequency (by zeroing the phase residual at the lowest few frequency points), Jeff nudged the transimpedance a bit to get the magnitude scale within the ~0.25%, shown in the attached results. Any scaling like this will be accounted for instead with the absolute calibration step, i.e. Side Quest 4 from G2501621, a la what was done for PR3 and SR3 top masses in LHO:86222 and LHO:84531 respectively.

Here's the characterization data and fit results for S1100127, assigned to ETMY L2's ULLLURLR OSEMs.

This sat amp is a UK 4CH sat amp, D0900900 / D0901284. The data was taken per methods described in T080062-v3, using the diagrammatic setup shown on PAGE 1 of the Measurement Diagrams from LHO:86807.

The data was processed and fit using ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Scripts/
plotresponse_S1100127_ETMY_L2_ULLLURLR_20250916.m

Explicitly, the fit to the whitening stage zero and pole, the transimpedance feedback resistor, and foton design string are:

`Optic`	`Stage`	`Serial_Number`	`Channel_Number`	`OSEM_Name`	`Zero_Pole_Hz`	`R_TIA_kOhm`	`Foton_Design`
`ETMY`	`L2`	`S1100127`	`CH1`	`UL`	`0.0963:5.26`	`121.25`	`zpk([5.26],[0.0963],1,"n")`
			`CH2`	`LL`	`0.0958:5.24`	`121.25`	`zpk([5.24],[0.0958],1,"n")`
			`CH3`	`UR`	`0.0952:5.2`	`121.25`	`zpk([5.2],[0.0952],1,"n")`
			`CH4`	`LR`	`0.0954:5.21`	`121.25`	`zpk([5.21],[0.0954],1,"n")`

The attached plot and machine readable .txt file version of the above table are also found in ${SusSVN}/trunk/electronicstesting/lho_electronics_testing/satamp/ECR_E2400330/Results/
2025-09-16_UKSatAmp_S1100127_D0901284-v5_fitresults.txt

Per usual, R_TIA_kOhm is not used in the compensation filter -- but after ruling out an adjustment in the zero frequency (by zeroing the phase residual at the lowest few frequency points), Jeff nudged the transimpedance a bit to get the magnitude scale within the ~0.25%, shown in the attached results. Any scaling like this will be accounted for instead with the absolute calibration step, i.e. Side Quest 4 from G2501621, a la what was done for PR3 and SR3 top masses in LHO:86222 and LHO:84531 respectively.

Note that the satamp for ETMY L2 has now been swapped back to a S1100137, which has been modified for ECR E2400330.

alog: 87722

Suspension	Old	New	OSEM
ETMX L2 (PUM)	S1100146	S1100119	ULLLURLR
ETMY L2 (PUM)	S1100137	S1100127	ULLLURLR
ITMX L2 (PUM)	S1100135	S1100118	ULLLURLR
ITMY L2 (PUM)	S1000277	S1100148	ULLLURLR