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Mon Mar 27 20:41:21 2017, rana, gautam, Update, PSL, PMC DAQ assay for feed-forward integration  
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Wed Mar 29 11:41:19 2017, gautam, Update, PSL, PMC DAQ assay for feed-forward integration  
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Thu Mar 30 00:16:09 2017, gautam, Update, PSL, PSL NPRO PZT calibration
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Mon Apr 3 17:25:13 2017, gautam, Update, PSL, PSL NPRO PZT calibration 
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Tue Apr 4 17:27:58 2017, rana, Update, PSL, PSL NPRO PZT calibration
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Thu Mar 30 18:11:01 2017, rana, Update, PSL, PMC DAQ assay for feed-forward integration
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Mon Apr 3 23:07:09 2017, gautam, Update, PSL, PMC DAQ assay for feed-forward integration
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Tue Apr 11 00:38:37 2017, gautam, Update, PSL, PMC demod moved off servo board
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Wed Apr 12 00:36:53 2017, gautam, Update, PSL, PMC demod moved off servo board 
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Tue Apr 18 01:01:03 2017, gautam, Update, PSL, PMC OLTF measured, DAQ channels calibrated 
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Tue Apr 18 16:10:00 2017, gautam, Update, PSL, PMC OLTF measured, DAQ channels calibrated
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Tue Apr 18 23:37:15 2017, rana, Update, PSL, PMC OLTF measured, DAQ channels calibrated
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Wed Apr 19 15:13:30 2017, gautam, Update, PSL, PMC/MCL multicoherence
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Message ID: 12926
Entry time: Mon Apr 3 23:07:09 2017
In reply to: 12920
Reply to this: 12939
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Author: |
gautam |
Type: |
Update |
Category: |
PSL |
Subject: |
PMC DAQ assay for feed-forward integration |
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I made some changes to the DAQ path on the PMC servo board, as per the plan posted earlier in this thread. Summary of changes:
- AC coupling PMC control signal path using 2 x 47uF metal film capacitors (in parallel)
- Grounding pin 5 of U15
- Adding gain to U14 (gain of ~500) and U15 (gain of ~50)
Details + photos + calibration of DAQ channels to follow. The PMC and IMC both seem to remain stably locked after this work. |