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 Mon Jan 20 20:20:36 2020, gautam, Update, PSL, PMC servo checkout 
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 Wed Jan 22 11:22:39 2020, gautam, Update, PSL, PMC modulation depth measurement
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Wed Jan 22 20:12:36 2020, gautam, Update, PSL, PMC demodulator electrical characterization
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Thu Jan 23 14:37:05 2020, gautam, Update, PSL, PMC VGA chip damaged?
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Thu Jan 23 16:37:14 2020, rana, Update, PSL, PMC VGA chip damaged?
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Thu Jan 23 22:10:01 2020, gautam, Update, PSL, PMC servo pulled out
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Fri Jan 24 15:42:08 2020, gautam, Update, PSL, PMC servo restored
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Sun Jan 26 13:47:00 2020, gautam, Update, PSL, PMC servo characterization
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Tue Jan 28 14:33:24 2020, gautam, Update, PSL, Inferred free-running frequency noise
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Thu Jan 23 18:52:31 2020, gautam, Update, PSL, PMC RFPD characterization
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Message ID: 15143
Entry time: Wed Jan 22 20:12:36 2020
In reply to: 15139
Reply to this: 15144
15147
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| Author: |
gautam |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
PMC demodulator electrical characterization |
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Summary:
The mixer + LPF combo used to demodulate the PMC PDH error signal seems to work as advertised.
Details:
Measurement setup --- Attachment #1. The IF signal was monitored using the scope in High-Z mode.
Results --- Attachment #2.
So the next step is to characterize the RF transimpedance of the PMC RFPD. |
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