Differences between revisions 13 and 16 (spanning 3 versions)

Electronics

outline

80MHz LIGO VCO box is used to readout the frequency of the beat signal precisely.

attachment:SR620.png

To have a fast response up to about 1MHz -150V is applied onto the photo diode.

attachment:RFPDnoise.png

Advanced_Techniques/Green_Locking/Electronics (last edited 2017-04-20 01:58:36 by RanaadhikariATligoDOTorg)

-  ⇤ ← Revision 13 as of 2010-10-13 17:47:32 → 
  Size: 1004
  Editor: KiwamuIzumi
  Comment:
+   ← Revision 16 as of 2010-11-24 23:42:32 → ⇥
  Size: 1320
  Editor: KiwamuIzumi
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 10:
+[[BR]]
-----
== VCO ==
 . 80MHz LIGO VCO box is used to readout the frequency of the beat signal precisely.
-Line 11:
+Line 15:
-== VCO ==

 . build by ourselves

 . need a specification
+  -----
 Line 23:
-== frequency discriminator ==
+-----
== frequency counter ==
-Line 25:
+Line 26:
- . build by ourselves
+ .SR620 is employed to read out the frequency of the beat signal.

attachment:SR620.png

||<-3> '''''setting parameters''''' ||
|| readout range || || MHz ||
|| DAC bit resolution || || ||
|| noise || || ||
-Line 29:
+Line 37:
+-----
-Line 35:
+Line 44:
+-----
-Line 40:
+Line 50:
+-----
-Line 47:
+Line 57:
+=== noise performance ===
attachment:RFPDnoise.png
-Line 48:
+Line 61:
+-----