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Message ID: 17112     Entry time: Mon Aug 29 18:25:12 2022
Author: Cici 
Type: Update 
Category: General 
Subject: Taking finer measurements of the actuator transfer function 

Took finer measurements of the x-arm aux laser actuator tranfer function (10 kHz - 1 MHz, 1024 pts/decade) using the Moku.

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I took finer measurements using the moku by splitting the measurement into 4 sections (10 - 32 (~10^4.5) kHz, 32 - 100 kHz, 100 - 320 kHz, 320 - 1000 kHz) and then grouping them together. I took 25 measurements of each ( + a bonus in case my counting was off), plotted them in the attached notebook, and calculated/plotted the standard deviation of the magnitude (normalized for DC offset). Could not upload to the ELOG as .pdf, but the pdf's are in the .zip file.

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Next steps are to do the same stdev calculation for phase, which shouldn't take long, and to use the vectfit of this better data to create a PZT inversion filter.

Attachment 1: PZT_TF_fine.png  432 kB  Uploaded Mon Aug 29 19:40:27 2022  | Hide | Hide all
PZT_TF_fine.png
Attachment 2: PZT_TF_fine_mag_stdev.png  231 kB  Uploaded Mon Aug 29 19:40:32 2022  | Hide | Hide all
PZT_TF_fine_mag_stdev.png
Attachment 3: ATF_fine.zip  2.205 MB  Uploaded Mon Aug 29 19:41:06 2022
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