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| <<ImageLink(electronics_diagram.png,Upgrade 09/GreenLock/Electronics/electronics_diagram design for the end,height=200)>> | |
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| == outline == . Preliminary design for the electronics used in 40m green locking. <<ImageLink(electronics_diagram.png,Upgrade 09/GreenLock/Electronics/electronics_diagram,height=400)>> [[BR]] |
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| . build by ourselves . need a specification [[BR]] |
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| == frequency discriminator == | . what kind of modification |
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| [[BR]] == frequency counter == .SR620 attachment:SR620.png [[BR]] == digital channel assign == <<ImageLink(green_digital.png,Upgrade 09/GreenLock/Electronics/digital_channel ,height=400)>> [[BR]] |
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| . what is the specification for each channel [[BR]] == wideband RFPD for green PLL == . A Silicon photodiode with the diameter of 10mm is used. To have a fast response up to about 1MHz -150V is applied onto the photo diode. . The schematic is available at https://nodus.ligo.caltech.edu:30889/svn/trunk/alberto/40mUpgrade/RFsystem/RFPDs/GreenLockingBroadBandPD [[BR]] |
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. anti-aliasing filter . anti-imaging filter |
Electronics
outline
- Preliminary design for the electronics used in 40m green locking.
VCO
- build by ourselves
- need a specification
PDH box
- what kind of modification
frequency counter
- SR620
attachment:SR620.png
digital channel assign
whitening filter
- what is the specification for each channel
wideband RFPD for green PLL
- A Silicon photodiode with the diameter of 10mm is used.
To have a fast response up to about 1MHz -150V is applied onto the photo diode.
The schematic is available at https://nodus.ligo.caltech.edu:30889/svn/trunk/alberto/40mUpgrade/RFsystem/RFPDs/GreenLockingBroadBandPD
digital front end
- anti-aliasing filter
- anti-imaging filter