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 Thu Jun 14 21:37:37 2012, yuta, Update, Green Locking, succeeded in 1FSR mode scan 
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 Fri Jun 15 00:50:54 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR
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Fri Jun 15 01:53:05 2012, Koji, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 12:03:41 2012, Zach, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 13:01:17 2012, yuta, Update, Green Locking, scanned Y arm for 5FSR
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Sat Jun 16 18:17:00 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan
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Sat Jun 16 18:51:44 2012, Koji, Update, Green Locking, Y arm length using 5FSR scan
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Sat Jun 16 19:32:11 2012, yuta, Update, Green Locking, Y arm length using 5FSR scan
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Message ID: 6823
Entry time: Sat Jun 16 12:03:41 2012
In reply to: 6820
Reply to this: 6824
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| Author: |
Zach |
| Type: |
Update |
| Category: |
Green Locking |
| Subject: |
scanned Y arm for 5FSR |
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Is that time stamp really correct? I wanted to look at the signal closely to see if I could get any feeling for why it would look so different when positive vs. negative, but I do not see a triangle anywhere near this time (1023780144)...
| Quote: |
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Interesting. It seems for me that there is a dependence of the noisiness as the beat frequency is scanned.
As you increase (or decrease?) the offset, C1:ALS-BEATY-COARSE_I_IN1 becomes bigger and more crisp.
The resulting out-of-loop stability also seems to be improved as you can see from the crispness of the PDH signal.
Do you find why this happens? Is this because the beat S/N depends on the beat frequency due to the PD noise?
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