<> = Summary of Demodulation Boards = || ''''' Name ''''' || ''''' S/N '''''||''''' Rev.''''' ||''''' LPF ''''' || ''''' Splitter'''''||''''' Amp. Imbalance [dB]''''' ||''''' Phase difference [deg] ''''' ||''''' conversion efficiency [Vout/VPD]''''' ||''''' Notes''''' || || --(AS11)-- || --(121)-- || || --(SCLF-10.7)-- || --(PSCQ-2-51W)-- || || ||--(I=0.19, Q=0.20)-- || Sacrificed to create AS110 || || REFL11 || 021 || || SCLF-10.7 || PSCQ-2-51W || || || I=4.74, Q=5.04|| w/ [[https://dcc.ligo.org/LIGO-D040179 | amp board]]|| || POY11 || 119 || || SCLF-10.7 || PSCQ-2-32 || || ||I=0.21, Q=0.18 || || || POX11 || || || SCLF-10.7 || PSCQ-2-51W || || || I=0.17, Q=0.16 || || || POP11 || || || SCLF-10.7 || || || || || /!\ does this exist ?|| || POP22 || 020 || || SCLF-21.4 || PSCQ-2-32 || || || I=0.30, Q=0.24|| || || REFL33 || || || SCLF-33+ || || || || I=0.42, Q=0.42|| || || AS55 || 029 || || SCLF-65 || PSCQ-2-51W || || || I=6.77, Q=6.77 || w/ amp board || || REFL55 || 118 || || SCLF-65 || PQW-2-90 || || || I=0.36, Q=0.35 || || || POP55 || || || SCLF-65+ || - || || || I=6.57 Q=6.48|| w/ amp board || || AS110 || formerly AS11 || || SXBP-100 (Sept2013) || || || || || || || POP110 || 120 || || SXBP-100 (Sept2013) || PSCQ-2-120 || || || I=0.28, Q=0.27|| || || REFL165 || || || SCLF-190 || || || || I=0.34, Q=0.34|| || || AS165 || || || SCLF-190 || || || || || /!\ does this exist ?|| || POP165 || || || SCLF-190 || || || || || /!\ does this exist ? || == References == . [1] Ordering Low pass filters [[http://nodus.ligo.caltech.edu:8080/40m/4459|40m elog #4459]] (Mar/2011) . [2] Low pass filters and the old name convention [[http://nodus.ligo.caltech.edu:8080/40m/4511|40m elog #4511]] (Apr/2011) . [3] Power splitter Upgrade [[http://nodus.ligo.caltech.edu:8080/40m/4538|40m elog #4538]] (Apr/2011) . [4] How to replace the splitter [[http://nodus.ligo.caltech.edu:8080/40m/4554|40m elog #4554]] (Apr/2011) . [5] Replacement of the splitters [[http://nodus.ligo.caltech.edu:8080/40m/4698|40m elog #4698]] (May/2011) . [6] Replacement of the splitters part II [[http://nodus.ligo.caltech.edu:8080/40m/4714|40m elog #4714]] (May/2011) . [7] I/Q imbalance tests [[http://nodus.ligo.caltech.edu:8080/40m/4736|40m elog #4736]] (May/2011) . [8] 1Y2 rack pictures [[Electronics/1Y2]] . [9] Circuit schematic [[https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=20605 | LIGO D990511-x0 ]] . [10] Measurement of the coversion efficiencies [[http://nodus.ligo.caltech.edu:8080/40m/6402 | 40m elog #6402 ]] (Mar/2012) ------ <
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> = Board Arrangement on 1Y2 Rack = == Diagram needs to be updated ! == . The latest version is available on the 40m svn: . [[https://nodus.ligo.caltech.edu:30889/svn/trunk/suresh/40m_RF_upgrade/1Y2%20Rack%20Layout.pdf]] {{attachment:1Y2_demod.png}} ------ <
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> = Upgrading of Demodulation Boards = ''' We are currently at the intermediate state ''' {{attachment:upgrade_demod.png}} ------ <
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> = Links = . [[ Electronics/WhiteningFilters | Whitening filters for the LSC demod signals]]