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Entry  Tue Jun 19 23:27:27 2018, gautam, Update, SUS, ETMX coil driver work in AM tomorrow 
    Reply  Thu Jun 21 00:14:01 2018, gautam, Update, SUS, ETMX coil driver out 
       Reply  Thu Jun 21 03:13:37 2018, gautam, Update, SUS, ETMX coil driver noise ETMXsticthced.pdfETMXFullSpan.pdfETMXCoilDriver.fil.zip
          Reply  Sun Jun 24 20:02:07 2018, gautam, Update, SUS, Some notes about coil driver noise CoilDriverSchematic.pdfD010001_2k_fastOnly_2.25k.pdfD010001_4k_fastOnly_4.5k.pdf
             Reply  Tue Jun 26 16:28:00 2018, gautam, Update, SUS, Coil driver protoboard characterization IMG_7060.JPGETMXstitchced.pdfETMXfullSpan.pdfPSRR.pdf
       Reply  Thu Jun 21 18:25:57 2018, gautam, Update, SUS, ETMX coil driver re-installed 
Message ID: 13999     Entry time: Thu Jun 21 18:25:57 2018     In reply to: 13992
Author: gautam 
Type: Update 
Category: SUS 
Subject: ETMX coil driver re-installed 

Initial tests look promising. Local damping works and I even locked the X arm using POX, although I did it in a fake way by simply inserting a x5.625 (=2.25 kohm / 400 ohm) gain in the coil driver filter banks. I will now tune the individual loop gains to account for the reduced actuation range.


Now I have changed the loop gains for local damping loops, Oplev loops, and POX locking loop to account for the reduced actuation range. The dither alignment servo (X arm ASS) has not been re-commissioned yet...

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