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= LSC demodulation board = <<TableOfContents(2)>>
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 || ''''' Name ''''' || ''''' S/N '''''||''''' Rev.''''' ||''''' LPF ''''' || ''''' Splitter'''''||''''' Notes''''' ||
 || AS11 || 121 || || || PSCQ-2-51W || ||
 || REFL11 || 021 || || || PSCQ-2-51W || ||
 || POY11 || 119 || || || PSCQ-2-32 || ||
 || POX11 || || || || PSCQ-2-51W || ||
 || AS55 || 029 || || || PSCQ-2-51W || ||
 || REFL55 || 118 || || || PQW-2-90 || ||
 || POP55 || || || || - || ||
 || POP22 || 020 || || || PSCQ-2-32 || ||
 || POP110 || 120 || || || PSCQ--120 || ||		 = 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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<<BR>>
<<BR>>


= 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}}

------
<<BR>>
<<BR>>

= Upgrading of Demodulation Boards =
''' We are currently at the intermediate state '''

 {{attachment:upgrade_demod.png}}

------
<<BR>>
<<BR>>

= Links =
 . [[ Electronics/WhiteningFilters | Whitening filters for the LSC demod signals]]

Contents

  1. Summary of Demodulation Boards
    1. References
  2. Board Arrangement on 1Y2 Rack
    1. Diagram needs to be updated !
  3. Upgrading of Demodulation Boards
  4. Links

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/ 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



Board Arrangement on 1Y2 Rack

Diagram needs to be updated !



Upgrading of Demodulation Boards

We are currently at the intermediate state

  • upgrade_demod.png



Links

Electronics/LSC_demoddulators (last edited 2017-05-04 02:53:01 by GautamvenugopalanATligoDOTorg)