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 Wed Feb 11 00:07:54 2015, rana, Update, LSC, Lock Loss plot 
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 Wed Feb 11 02:42:05 2015, Jenne, Update, LSC, PRC error signal RF spectra
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Wed Feb 11 03:41:12 2015, Koji, Update, LSC, PRC error signal RF spectra
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Wed Feb 11 17:31:11 2015, ericq, Update, LSC, RFPD spectra
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Wed Feb 11 18:07:42 2015, ericq, Update, LSC, RFPD spectra
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Thu Feb 12 01:00:18 2015, rana, Update, LSC, RFPD spectra
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Message ID: 11003
Entry time: Wed Feb 11 17:31:11 2015
In reply to: 11000
Reply to this: 11004
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| Author: |
ericq |
| Type: |
Update |
| Category: |
LSC |
| Subject: |
RFPD spectra |
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For future reference, I've taken spectra of our various RFPDs while the PRMI was sideband locked on REFL33, using a 20dB RF coupler at the RF input of the demodulator boards. The 20dB coupling loss has been added back in on the plots. Data files are attached in a zip.
Exceptions:
- The REFL165 trace was taken at the input of the amplifier that immediately preceeds the demod board.
- The 'POPBB' trace was taken with the coupler at the input of the bias tee, that leads to an amplifier, then splitter, then the 110 and 22 demod boards.
I also completely removed the cabling for REFLDC -> CM board, since it doesn't look like we plan on using it anytime in the immediate future.
  
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