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Thu Sep 4 19:39:36 2014, Tara, Evan, DailyProgress, FSS, TTFSS OLTFs
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Sun Sep 7 11:54:21 2014, Evan, DailyProgress, FSS, TTFSS OLTFs, residual frequency noise    
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Mon Sep 8 04:20:41 2014, rana, DailyProgress, FSS, TTFSS OLTFs, residual frequency noise
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Wed Oct 2 19:09:31 2019, anchal, DailyProgress, FSS, TTFSS OLTFs; Repeated this 5 year old measurement
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Thu Jan 9 19:00:19 2020, anchal, DailyProgress, FSS, TTFSS OLTFs
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Wed Jan 22 14:16:28 2020, anchal, DailyProgress, FSS, TTFSS OLTFs
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Wed Jan 22 16:00:26 2020, anchal, DailyProgress, FSS, TTFSS OLTFs with Maximum Gain
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Thu Jan 23 19:23:03 2020, anchal, DailyProgress, FSS, NFSS Boost Stage
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Message ID: 2515
Entry time: Wed Jan 22 14:16:28 2020
In reply to: 2508
Reply to this: 2517
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Author: |
anchal |
Type: |
DailyProgress |
Category: |
FSS |
Subject: |
TTFSS OLTFs |
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Repeated these measurements after changes to the RFPDs (Notch improved).
Inferences:
- No significant shape change is observed in the Open loop Transfer Functions (OLTFs).
- Only minor absolute value changes have happened which just indicate a change in overall transimpedance at omega frequencies of the RFPDs.
- This indicates that if non-linearity was affecting anything, it at least wasn't the shape of the OLTFs or the suppression of laser noise.
- Also, these measurements endorse that no major harm has been done to the circuits in the process of modification (as should be the case).
Data |
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