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Entry  Sat Sep 10 14:55:28 2011, Keiko, Update, LSC, 3f demodulation board check 
    Reply  Sat Sep 10 16:10:42 2011, Keiko, Update, LSC, 3f demodulation board check REFL33-input-filter.png
       Reply  Sat Sep 10 18:57:52 2011, Keiko, Update, LSC, 3f demodulation board check 
          Reply  Sun Sep 11 15:19:39 2011, kiwamu, Update, LSC, phase delay in RF signals 
       Reply  Sun Sep 11 22:36:32 2011, Keiko, Update, LSC, 3f demodulation board check REFL33.pngREFL165.png
          Reply  Mon Sep 12 13:24:07 2011, Keiko, Update, LSC, 3f demodulation board check 
             Reply  Mon Sep 12 16:27:01 2011, Keiko, Update, LSC, 3f demodulation board check 
                Reply  Mon Sep 12 18:40:35 2011, Keiko, Update, LSC, 3f demodulation board check 
                   Reply  Tue Sep 13 15:00:25 2011, Keiko, Update, LSC, 3f demodulation board check WF33.pdfWF165.pdf
                      Reply  Tue Sep 13 23:08:51 2011, Keiko, Update, LSC, 3f demodulation board check REFL33-modified.pngREFL165-modified.png
                         Reply  Thu Sep 15 01:06:20 2011, Keiko, Update, LSC, 3f demodulation board check 
                            Reply  Fri Sep 16 21:26:12 2011, Keiko, Update, LSC, 3f demodulation board check 
Message ID: 5412     Entry time: Thu Sep 15 01:06:20 2011     In reply to: 5399     Reply to this: 5440
Author: Keiko 
Type: Update 
Category: LSC 
Subject: 3f demodulation board check 

In addition to REFL 33 ans 165, I checked the orthogonality for the other existing three channels.

 

AS11

ABS = 1.025035  PHASE = -93.124929 [deg]

REFL11]

ABS = 0.920984  PHASE = -88.824691 [deg]

REFL55

ABS = 1.029985 , PHASE = -90.901123 [deg]

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The demodulated signal was set as 50 Hz (for example LO 11MHz and RF 11MHz+50Hz from function generators.) These AS11, REFL11, REL55, REFL33m REFL165 are the current available channels in terms of the connection to the data system from the demodulation board. I am going to estimate the error next.

Quote:

REFL165

ABS = 1.070274, PHASE = -81.802479 [deg]

- - - - - - - - - - - - - - - - - -

REFL33

ABS = 1.016008 PHASE = -89.618724 [deg]

 

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