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ID Date Author Type Category Subjectup Text Attachments
  17794   Fri Aug 18 14:43:24 2023 MurtazaUpdateGeneralAcoustic Noise Spectrum of various lab spaces. (100Hz-10kHz)dB(A) (A-weighted) scale and
the Noise Criterion (NC) scale are popularly
used in the United States for creating the
  
  12442   Thu Aug 25 19:03:56 2016 PrafulUpdateElectronicsAcoustic Tab and Amp SuspensionMy box has been suspended in the PSL using
surgical tubing, and it has been connected
to C1:PEM-MIC_1 (C17) with a BNC. I made
  
  12460   Thu Sep 1 15:28:01 2016 ranaUpdateElectronicsAcoustic Tab and Amp Suspension
add photo of installation
no
more secret personal pages! put channels
into the actual pages that we look at
make
  
  12463   Thu Sep 1 17:25:02 2016 PrafulUpdateElectronicsAcoustic Tab and Amp SuspensionI'll add a picture of the installation
when I get back to campus and finish hooking
up the power cable. I haven't added this
  
  7707   Tue Nov 13 21:05:22 2012 AyakaUpdateWienerFilteringAcoustic noise cancellation with MC In order to perform acoustic noise
cancellation with MCL signal, I am trying
to find sweet spots for microphones.
 9x 
  7814   Wed Dec 12 11:49:05 2012 AyakaUpdateLSCAcoustic noise in POX and AS error signal[Koji, Ayaka]
Last night, I injected acoustic noise
at POX table and AS table with oplev controls
 POX_noise4.pdfAScontXARM_acoustic.pdf 
  12677   Wed Dec 14 19:16:57 2016 LydiaUpdateCDSAcromag Binary I/O testingI looked into converting the QPD whitening
switches for the X end to Acromag.


To test this out and be
  
  12634   Tue Nov 22 13:55:32 2016 JohannesOmnistructure40m upgradingAcromag ChassisCurrent Acromag chassis status:

I found out that Acromag offers
DIN rail mounting kits for the open boards,
 acroplan.pdf 
  12625   Fri Nov 18 00:25:08 2016 JohannesOmnistructure40m upgradingAcromag Chassis DevelopmentI had Rich show me his approach to a chassis
for the Acromag modules. The document tree
for his design can be found on the DCC.
 acromag_bareboard.PNGXT_digital_340px_0.jpg 
  12477   Wed Sep 7 18:00:47 2016 LydiaUpdateGeneralAcromag Progress[Teng, Lydia]

We
would like to establish a system for setting
  
  12514   Thu Sep 22 20:18:27 2016 LydiaUpdateGeneralAcromag ProgressWe moved the Acromag and its power supply
to the X end, where we connected it to the
diagnostic output of the NPRO controller.
  
  12554   Wed Oct 12 18:09:25 2016 LydiaUpdateGeneralAcromag Progress[Lydia, Johannes]

Johannes acquired a crate to contain
the Acromag setup and wiring, and installed
  
  12306   Fri Jul 15 17:44:37 2016 AakashSummaryGeneralAcromag Setup | SURF2016Aidan has described the physical connections
and initial setup here :  https://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:resources:computing:acromag#recovering_from_a_terminal_power_communication_outage 
.
  
  12360   Mon Aug 1 18:50:29 2016 AakashUpdateGeneralAcromag Setup | SURF2016There were many unknown and unsolved problems
with using modbusApp for linux-arm architecture.
So I tried to install the necessary files
 7x 
  12366   Wed Aug 3 15:35:19 2016 AakashUpdateGeneralAcromag Setup | SURF2016Lydia helped me to troubleshoot the Accromag
connection problems which I was facing previously. 
If power goes off/turned off manually, the
  
  12368   Wed Aug 3 16:34:59 2016 LydiaUpdateGeneralAcromag Setup | SURF2016Actually, if the power goes off and back
on, the ethernet connection comes back online
after about 5 seconds, or faster if it is
  
  13463   Mon Dec 4 22:06:07 2017 johannesOmnistructureComputersAcromag XEND progressI wired up the power distribution, and
ethernet cables in the Acromag chassis today.
For the time being it's all kind of loose
  
  13468   Thu Dec 7 22:24:04 2017 johannesOmnistructureComputersAcromag XEND progress 




 sourcing_input.pngsourcing_to_sourcing_with_common_supply.pngIMG_20171207_193128928.jpg 
  14364   Tue Dec 18 11:42:40 2018 ChubUpdateGeneralAcromag box wiredThe Auxiliary DAQ Chassis, or Acromag box,
is now wired and ready for testing. 
I will be sorting the cables at the vacuum
  
  13553   Wed Jan 17 14:32:51 2018 gautamUpdateDAQAcromag checks
I take back what I said about the
OSEM PD mon at the meeting - there does seem
to be to be some overall calibration factor
 OSEMPDmon_Acro.png 
  13554   Wed Jan 17 22:44:14 2018 johannesUpdateDAQAcromag checksThis happened because there are multiple
ways to scale the raw value of an EPICS channel
to the desired output range. In the CryoLab
  
  13565   Sun Jan 21 13:11:25 2018 johannesUpdateDAQAcromag checksAfter some research: -the- reason for the
reduced +/- 20,000 swing in raw values is
a default setting for having support for
  
  14718   Tue Jul 2 12:30:53 2019 gautamUpdateElectronicsAcromag crate switched to Sorensens[chub, gautam]

We crossed off another couple of
 1X5Sorensens.pdfCDS_20190702.png 
  12273   Fri Jul 8 13:01:23 2016 AakashUpdateGeneralAcromag is talking ! | SURF 2016Acromag is talking now, after few changes
to the original EPICS configuration and cross
compile configuration. Modbus config files
  
  13832   Fri May 11 11:47:33 2018 johannesSummaryPEMAcromag issuesThe replacement Acromag we scooped from
the West Bridge E-Shop does actually seem
to work, although we thought it was broken
  
  13844   Tue May 15 15:13:23 2018 KiraSummaryPEMAcromag issuesI tried calibrating the other channels
today, but they still fluctuate. Sometimes
they do stabilize at +/- 10V, but then suddenly
  
  14892   Tue Sep 17 23:43:34 2019 KojiSummaryCDSAcromag logic checkerFor the investigation of the latch logic
issue for the CARM CM board, I have made
the LED logic checkers with DB breakout boards.
 digital_checker.pdfIMG_8914.JPG 
  13473   Thu Dec 14 00:32:56 2017 johannesUpdateASSAcromag new crate; c1auxex2 configured as gateway server for acromagThis splicing in of fast binary channels
we discussed at yesterday's and today's
meetings is getting messy with the current
 fp_mod_4U.pdfIMG_20171213_171541850_HDR.jpg 
  13434   Fri Nov 17 16:31:11 2017 aaronOmnistructureComputersAcromag wired upAcromag
Wireup Update

I
finished wiring up the Acromags to replace
 AcromagWiringMaps.pdf 
  13435   Fri Nov 17 17:10:53 2017 ranaOmnistructureComputersAcromag wired upExactly: you'll have to list explicitly
what functions those channels had so that
we know what we're losing before we make
  
  15760   Tue Jan 12 08:21:47 2021 anchalHowToCDSAcromag wiring investigationI used an Acromag XT1221 in CTN to play
around with different wiring and see what
works.  Following are my findings:
 SingleEndedNonFloatingWiring.pdfSingleEndedFloatingWiring.pdfDifferentialSignalWiring.pdf 
  15761   Tue Jan 12 11:42:38 2021 gautamHowToCDSAcromag wiring investigationThanks for the systematic effort.


Can you please post some
time domain plots (ndscope perferably or
  
  15762   Wed Jan 13 16:09:29 2021 AnchalHowToCDSAcromag wiring investigationI'm working on a better wiring diagram
that takes into account multiple power supplies,
how their GND is passed forward to the circuits
 SimpleTestsStriptoolImages.pdf 
  15778   Tue Jan 26 12:59:51 2021 AnchalHowToCDSAcromag wiring investigationTaking inspiration from SR785 on how it
reads differential signal, I figured that
acromag too always need a way to return current
 TestingDifferentialSignalWithFloatingRTNwrtIN-.pdf 
  15779   Tue Jan 26 15:37:25 2021 AnchalHowToCDSAcromag wiring investigationHere I present few wiring diagrams when
using Acromag to avoid noisy behavior and
ground loops.
 GeneralLabWiring.pdfGeneralLabWiring2.pdfGeneralLabWiring3.pdf 
  15785   Fri Jan 29 17:57:17 2021 AnchalHowToCDSAcromag wiring investigationI found a
white paper  from Acromag which
discusses how to read differential signal
 GeneralLabWiringDiffWith2Wires.pdfGeneralLabWiringDiffWith3Wires.pdfDiffReadResistorbtwnINandRTN.pdf 
  17716   Wed Jul 26 11:31:10 2023 JCUpdateElectronicsAcromag work[Yehonathan, JC]

I have made a panel design for
the acromag chassis. These panels will hold
 IMG_6182.jpegScreenshot_2023-07-26_123925.png 
  6210   Wed Jan 18 12:38:44 2012 steveUpdatePEMAcrylic plexiglass transmittance   Acrylite-Gp.pptxroscogel_red#26_film.pdf 
  5524   Thu Sep 22 22:53:06 2011 SureshUpdateComputer Scripts / ProgramsActivated DAQ channels in C1IOO model and restared fbTo look at the WFS servo signals I was
using test points in the servo filter banks. 
This is not recommended for regular operation
  
  15946   Fri Mar 19 15:31:56 2021 AidanUpdateComputersActivated MATLAB license on donatellaActivated MATLAB license on donatella   
  15945   Fri Mar 19 15:26:19 2021 AidanUpdateComputersActivated MATLAB license on megatronActivated MATLAB license on megatron   
  3690   Mon Oct 11 17:31:44 2010 yutaUpdateCDSActivation of DAQ channels for 8 optics(Joe, Yuta)

Background:
  
  3691   Mon Oct 11 20:52:00 2010 ranaUpdateCDSActivation of DAQ channels for 8 opticsBah!  We tried   
  5696   Wed Oct 19 12:25:58 2011 SureshUpdate40m UpgradingActive Tiptilts from LLO moved to clean shelf along X armI have moved the active tip tilts that
we brought over from LLO to the Clean Bureau
along the X arm (closest to the ETMX). There
  
  5697   Wed Oct 19 13:45:11 2011 SureshUpdate40m UpgradingActive Tiptilts from LLO moved to clean shelf along X armI have moved the active tip tilts that
we brought over from LLO to the Clean Bureau
along the X arm (closest to the ETMX). There
  
  3917   Sun Nov 14 16:40:46 2010 JenneUpdateTreasureActivities related to OSEM measurement[Valera, Jenne]
We pondered the idea of clamping
the PRM optic to measure the OSEM noise. 
  
  13746   Wed Apr 11 01:34:31 2018 gautamUpdateIOOActivities today[kevin, gautam]

activities done today - details/plots/data/evidence
tomorrow.
  
  14558   Fri Apr 19 16:19:42 2019 gautamUpdateSUSActuation matrix still not orthogonalI repeated the exercise from yesterday,
this time driving the butterfly mode [+1
-1 -1 +1] and adding the tuned PIT and
  
  14559   Fri Apr 19 19:22:15 2019 ranaUpdateSUSActuation matrix still not orthogonalIf thy left hand troubles thee

then let the mirror show the right

for if it troubles enough to cut
  
  16929   Fri Jun 17 16:22:21 2022 yutaUpdateLSCActuator calibration of BS. ITMX, ITMY, updated MICH displacement spectra from c1calFollowing what we have done in 2013 (40m/8242),
actuator calibration was done using MICH.
 6x 
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