Summary of Demodulation Boards

Name	S/N	Rev.	LPF	Splitter	Amp. Imbalance [dB]	Phase difference [deg]	Notes
AS11	121		SCLF-10.7	PSCQ-2-51W
REFL11	021		SCLF-10.7	PSCQ-2-51W			w/ amp board
POY11	119		SCLF-10.7	PSCQ-2-32
POX11			SCLF-10.7	PSCQ-2-51W
POP11			SCLF-10.7
POP22	020		SCLF-21.4	PSCQ-2-32
REFL33			SCLF-33+
AS55	029		SCLF-65	PSCQ-2-51W			w/ amp board
REFL55	118		SCLF-65	PQW-2-90
POP55			SCLF-65+	-			w/ amp board
POP110	120		SCLF-135	PSCQ-2-120
REFL165			SCLF-190
AS165			SCLF-190
POP165			SCLF-190

References

[1] Ordering Low pass filters 40m elog #4459
[2] Low pass filters and the old name convention 40m elog #4511
[3] Power splitter Upgrade 40m elog #4538
[4] How to replace the splitter 40m elog #4554
[5] Replacement of the splitters 40m elog #4698
[6] Replacement of the splitters part II 40m elog #4714
[7] I/Q imbalance tests 40m elog #4736
[8] 1Y2 rack pictures Electronics/1Y2
[9] Circuit schematic LIGO D990511-x0

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

Upgrading of Demodulation Boards

We are currently at the intermediate state

-  ⇤ ← Revision 26 as of 2011-11-04 11:08:54 → 
  Size: 2300
  Editor: KiwamuIzumi
  Comment:
+   ← Revision 35 as of 2012-03-11 10:11:21 → ⇥
  Size: 2659
  Editor: KiwamuizumiATligoDOTorg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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- || AS11 	 || 121 || || SCLF-10.7 || PSCQ-2-51W     || || || w/ amp board ||
 || REFL11 	|| 021 	|| || SCLF-10.7 || PSCQ-2-51W 	|| || || ||
+ || AS11 	 || 121 || || SCLF-10.7 || PSCQ-2-51W     || || ||  ||
 || REFL11 	|| 021 	|| || SCLF-10.7 || PSCQ-2-51W 	|| || || w/ amp board||
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+Line 13:
- || AS55 	|| 029 	|| || SCLF-65   || PSCQ-2-51W 	|| || || ||
+ || AS55 	|| 029 	|| || SCLF-65   || PSCQ-2-51W 	|| || || w/ amp board ||
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+Line 22:
-  . [1]  Ordering Low pass filters [http://nodus.ligo.caltech.edu:8080/40m/4459 40m elog #4459]
  . [2]  Low pass filters and the old name convention [http://nodus.ligo.caltech.edu:8080/40m/4511 40m elog #4511]
  . [3] Power splitter Upgrade [http://nodus.ligo.caltech.edu:8080/40m/4538 40m elog #4538]
  . [4] How to replace the splitter [http://nodus.ligo.caltech.edu:8080/40m/4554 40m elog #4554]
  . [5] Replacement of the splitters [http://nodus.ligo.caltech.edu:8080/40m/4698 40m elog #4698]
  . [6] Replacement of the splitters part II [http://nodus.ligo.caltech.edu:8080/40m/4714 40m elog #4714]
  . [7] I/Q imbalance tests [http://nodus.ligo.caltech.edu:8080/40m/4736 40m elog #4736]
+  . [1]  Ordering Low pass filters [[http://nodus.ligo.caltech.edu:8080/40m/4459|40m elog #4459]]
  . [2]  Low pass filters and the old name convention [[http://nodus.ligo.caltech.edu:8080/40m/4511|40m elog #4511]]
  . [3] Power splitter Upgrade [[http://nodus.ligo.caltech.edu:8080/40m/4538|40m elog #4538]]
  . [4] How to replace the splitter [[http://nodus.ligo.caltech.edu:8080/40m/4554|40m elog #4554]]
  . [5] Replacement of the splitters [[http://nodus.ligo.caltech.edu:8080/40m/4698|40m elog #4698]]
  . [6] Replacement of the splitters part II [[http://nodus.ligo.caltech.edu:8080/40m/4714|40m elog #4714]]
  . [7] I/Q imbalance tests [[http://nodus.ligo.caltech.edu:8080/40m/4736|40m elog #4736]]
  . [8] 1Y2 rack pictures [[Electronics/1Y2]]
  . [9] Circuit schematic [[https://dcc.ligo.org/cgi-bin/DocDB/ShowDocument?docid=20605 | LIGO D990511-x0 ]]
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<<BR>>
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+Line 39:
- . [https://nodus.ligo.caltech.edu:30889/svn/trunk/suresh/40m_RF_upgrade/1Y2%20Rack%20Layout.pdf]
+ . [[https://nodus.ligo.caltech.edu:30889/svn/trunk/suresh/40m_RF_upgrade/1Y2%20Rack%20Layout.pdf]]
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- attachment:1Y2_demod.png
+ {{attachment:1Y2_demod.png}}
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-[[BR]]
[[BR]]
+<<BR>>
<<BR>>
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-= 2-Step Upgrading =
+= Upgrading of Demodulation Boards =
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- attachment:upgrade_demod.png
+ {{attachment:upgrade_demod.png}}

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