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Reports until 13:35, Friday 03 February 2023
H1 AOS
kevin.kuns@LIGO.ORG - posted 13:35, Friday 03 February 2023 (67214)
CARM measurement at CARM TO ANALOG
Craig, Kevin

We are having trouble with PRCL in DRMI_TO_POP.  We double checked the CARM UGF at CARM_TO_ANALOG to make sure the bandwidth of that loop was still high.
The UGF is 10 kHz, and has plenty of phase margin.  Looks like it always has.



Instructions to take remote SR785 measurements:

cd /ligo/gitcommon/psl_measurements/templates
conda activate /ligo/home/craig.cahillane/.conda/envs/psl

Make sure the SR785 is plugged into the CARM SERVO board out at the PSL racks.
Open LSC REFL SERVO screen, and activate the EXC A.

Run the injection:
python ../code/SRmeasure.py carm_olg_template.yml -i 10.22.10.30 -a 10 -f /ligo/gitcommon/psl_measurements/data/carm_olg/carm_olg_at_carm_to_analog

Data is saved as dB/deg by default (can be changed in .yml file)

Plot the data:
python ../code/quick_tf_plot.py /ligo/gitcommon/psl_measurements/data/carm_olg/carm_olg_at_carm_to_analog_03-02-2023_132050.txt

Look at data:
open /ligo/gitcommon/psl_measurements/figures/carm_olg/carm_olg_at_carm_to_analog_03-02-2023_132050.pdf

If you made a mistake (like Craig) and inverted IN1 and IN2, you can flip the TF data like:
python ../code/quick_tf_plot.py /ligo/gitcommon/psl_measurements/data/carm_olg/carm_olg_at_carm_to_analog_03-02-2023_132050.txt -f
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