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 Thu Dec 4 17:42:23 2008, caryn, Update, IOO, drum modes observable without excitation 
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 Fri Dec 5 09:29:59 2008, rana, Update, IOO, drum modes observable without excitation
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Fri Dec 5 21:31:11 2008, Yoichi, Update, IOO, drum modes observable without excitation
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Message ID: 1176
Entry time: Thu Dec 4 17:42:23 2008
Reply to this: 1179
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| Author: |
caryn |
| Type: |
Update |
| Category: |
IOO |
| Subject: |
drum modes observable without excitation |
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So, the mode cleaner was evidently aligned better and now the drum modes are observable using DTT.
The Lock-In was set to 27.8kHz and the drum mode frequencies were previously observed to be 28.039kHz(MC2), 28.222kHz(MC3) and 28.221kHz(MC1). So, we might expect peaks at ~239Hz,421Hz,422Hz.
Peaks have been observed around the expected frequencies in channel IOO-MC-DRUM1.
Note that it is possible to resolve the separate MC1 and MC3 peaks which are so close together.
(sorry these are pdf's and not png's) |
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