Demodulation Boards
Name
S/N
Rev.
LPF
Splitter
Amp. Imbalance [dB]
Phase difference [deg]
Notes
AS11
121
SCLF-10.7
PSCQ-2-51W
w/ amp board
REFL11
021
SCLF-10.7
PSCQ-2-51W
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
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 [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]
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
2-Step Upgrading
We are currently at the intermediate state
- attachment:upgrade_demod.png