Reports until 16:52, Tuesday 22 April 2025
GQuEST Output Filter Cavities
Torrey Cullen - posted 16:52, Tuesday 22 April 2025 (12267)
Uploading experimentally taken transfer function as an inverted filter on the moku - continued

[Ian, Torrey]

Continuation of 12256.

Testing the script in action. I rewired the set up to mimic how this data was taken and reconfigured moku 1. This includes VCO locking cavity 1 and having the FRA output going to the piezo. Take the updated data, run it through the code, upload to moku, and track performance with the uploaded filter on and off.

Between nofilter.png, the customfilter.png, and customfilterincreasedgain.png (increasing the single leading value in the text file to 3, from 1), reduces the overall RMS from 650 uV -> 550 uV -> 416 uV. Note that you cannot increase the gain arbitrarily high as it will cause piezo to ring up if too high (was too high at 5). This seems successful, but we still need better control overall.

Images attached to this report