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Wed Apr 3 17:40:18 2013, Jamie, Configuration, Electronics, putting together a 110 MHz LSC demod board
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Wed Apr 3 18:41:22 2013, Jamie, Configuration, Electronics, putting together a 110 MHz LSC demod board
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Wed Apr 3 22:26:51 2013, rana, Configuration, Electronics, putting together a 110 MHz LSC demod board
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Thu Apr 4 14:37:15 2013, Jamie, Configuration, Electronics, putting together a 110 MHz LSC demod board
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Mon Aug 26 18:55:18 2013, Jenne, Configuration, Electronics, putting together a 110 MHz LSC demod board for AS
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Mon Aug 26 20:13:17 2013, rana, Configuration, Electronics, putting together a 110 MHz LSC demod board for AS
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Tue Aug 27 15:31:48 2013, Jenne, Configuration, Electronics, putting together a 110 MHz LSC demod board for AS
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Tue Sep 3 21:10:36 2013, Jenne, Configuration, Electronics, putting together a 110 MHz LSC demod board for AS
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Tue Aug 27 17:32:52 2013, Jenne, Configuration, Electronics, putting together a 110 MHz LSC demod board for AS
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Tue Aug 27 18:21:35 2013, Jenne, Configuration, Electronics, 110 MHz LO options
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Tue Aug 27 18:58:52 2013, Koji, Configuration, Electronics, 110 MHz LO options
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Mon Sep 2 16:46:32 2013, Jenne, Update, Electronics, RF distribution box is on the bench
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Mon Sep 2 18:06:21 2013, Jenne, Update, Electronics, RF distribution box: 110 MHz LO options  
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Tue Sep 3 21:08:13 2013, Jenne, Update, Electronics, RF distribution box: 110 MHz LO options
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Wed Sep 4 16:06:40 2013, Jenne, Update, Electronics, RF distribution box: Reinstalled
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Wed Sep 4 21:44:54 2013, Not Jenne, Update, Electronics, RF distribution box: Reinstalled
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Message ID: 8404
Entry time: Wed Apr 3 17:40:18 2013
Reply to this: 8407
8409
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Author: |
Jamie |
Type: |
Configuration |
Category: |
Electronics |
Subject: |
putting together a 110 MHz LSC demod board |
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I started to look into putting together a 110 MHz demod board to be used as POP110 (see #8399).
We have five spare old-skool EuroCard demod boards (LIGO-D990511). From what I gather (see #4538, #4708) there are two modifications we do to these boards to make them ready for prime time:
- appropriate LP filter at PD RF input (U5 -> MC SCLF-*)
- swap out T1 transformer network with a commercial phase shifting power splitter (MC PQW/PSCQ)
#4538 also describes some other modifications but I'm not sure if those were actually implemented or not:
- removal of the attenuator/DC block/ERA-5 amp sections at the I/Q outputs
- swap ERA-5 amp with "Cougar"(?) amp at LO input.
What we'll need for a 110 demod:
I'll scrounge or order. |