Contents
Summary of Demodulation Boards
Name
S/N
Rev.
LPF
Splitter
Amp. Imbalance [dB]
Phase difference [deg]
conversion efficiency [Vout/VPD]
Notes
AS11
121
SCLF-10.7
PSCQ-2-51W
I=0.19, Q=0.20
Sacrificed to create AS110
REFL11
021
SCLF-10.7
PSCQ-2-51W
I=4.74, Q=5.04
w/ amp board
POY11
119
SCLF-10.7
PSCQ-2-32
I=0.21, Q=0.18
POX11
SCLF-10.7
PSCQ-2-51W
I=0.17, Q=0.16
POP11
SCLF-10.7
![/!\](/moin_static1911/modern/img/alert.png "/!\")
does this exist ?POP22
020
SCLF-21.4
PSCQ-2-32
I=0.30, Q=0.24
REFL33
SCLF-33+
I=0.42, Q=0.42
AS55
029
SCLF-65
PSCQ-2-51W
I=6.77, Q=6.77
w/ amp board
REFL55
118
SCLF-65
PQW-2-90
I=0.36, Q=0.35
POP55
SCLF-65+
-
I=6.57 Q=6.48
w/ amp board
AS110
formerly AS11
SXBP-100 (Sept2013)
POP110
120
SXBP-100 (Sept2013)
PSCQ-2-120
I=0.28, Q=0.27
REFL165
SCLF-190
I=0.34, Q=0.34
AS165
SCLF-190
does this exist ?POP165
SCLF-190
does this exist ?
References
[1] Ordering Low pass filters 40m elog #4459 (Mar/2011)
[2] Low pass filters and the old name convention 40m elog #4511 (Apr/2011)
[3] Power splitter Upgrade 40m elog #4538 (Apr/2011)
[4] How to replace the splitter 40m elog #4554 (Apr/2011)
[5] Replacement of the splitters 40m elog #4698 (May/2011)
[6] Replacement of the splitters part II 40m elog #4714 (May/2011)
[7] I/Q imbalance tests 40m elog #4736 (May/2011)
[8] 1Y2 rack pictures Electronics/1Y2
[9] Circuit schematic LIGO D990511-x0
[10] Measurement of the coversion efficiencies 40m elog #6402 (Mar/2012)
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
