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 Wed Apr 22 11:48:30 2015, manasa, Summary, General, Delay line frequency discriminator for FOL error signal
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 Wed Apr 22 14:56:18 2015, manasa, Summary, General, Delay line frequency discriminator for FOL error signal
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Mon May 4 10:21:09 2015, manasa, Summary, General, Delay line frequency discriminator for FOL error signal 
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Mon May 4 12:42:34 2015, manasa, Summary, General, Delay line frequency discriminator for FOL error signal
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Mon May 18 14:46:20 2015, manasa, Summary, General, Delay line frequency discriminator for FOL error signal
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Message ID: 11270
Entry time: Mon May 4 10:21:09 2015
In reply to: 11236
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| Author: |
manasa |
| Type: |
Summary |
| Category: |
General |
| Subject: |
Delay line frequency discriminator for FOL error signal |
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Attached is the schematic of the analog DFD and the plot showing the zero-crossing for a delay line length of 27cm. The bandwidth for the linear output signal obtained roughly matches what is expected from the length difference (370MHz) .
We could use a smaller cable to further increase our bandwidth. I propose we use this analog DFD to determine the range at which the frequency counter needs to be set and then use the frequency counter readout as the error signal for FOL.
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