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Entry  Tue Jul 16 16:00:01 2019, gautam, Update, CDS, c1iscaux Supermicro setup IMG_7769.JPG
    Reply  Wed Jul 17 21:22:41 2019, gautam, Update, CDS, CM board Latch Enable subtlety 
       Reply  Sun Jul 21 12:55:38 2019, gautam, Update, CDS, CM board Latch Enable test script LatchLogic.pdfLatchLogicTest.png
          Reply  Fri Aug 9 08:59:04 2019, gautam, Update, CDS, Prep for install of c1iscaux 
             Reply  Sun Aug 11 11:47:42 2019, gautam, Update, CDS, Bench test of c1iscaux 
                Reply  Mon Aug 12 17:36:04 2019, gautam, Update, CDS, More bench test of c1iscaux iscauxCheclist.pdf
                   Reply  Mon Aug 12 21:25:19 2019, Koji, Update, CDS, More bench test of c1iscaux 
                   Reply  Tue Aug 13 08:07:09 2019, gautam, Update, CDS, P1--->P2 
                      Reply  Tue Aug 13 14:36:17 2019, gautam, Update, CDS, P1--->P2 
                   Reply  Fri Aug 16 16:40:04 2019, gautam, Update, CDS, 1Y3 work newLook1Y3.JPGIMG_7803.JPGc1lsc_crashed.png
                      Reply  Sat Aug 17 16:49:23 2019, gautam, Update, CDS, More 1Y3 work Screen_Shot_2019-08-17_at_3.00.57_PM.pngScreen_Shot_2019-08-17_at_3.12.23_PM.pngIMG_7804.JPGScreenshot_from_2019-08-17_17-04-47.png
                         Reply  Mon Aug 19 14:36:21 2019, gautam, Update, CDS, c1iscaux remaining work caseForSmallerFootprint.pdf
                            Reply  Tue Aug 20 19:05:24 2019, Koji, Update, CDS, MC1 (and MC3) troubleshoot Screenshot_from_2019-08-20_17-26-01.pngScreenshot_from_2019-08-20_17-43-03.png
                               Reply  Thu Aug 22 12:54:06 2019, Koji, Update, CDS, MC1 glitch removed (for now) and IMC locking recovered 7x
                                  Reply  Thu Aug 22 20:56:51 2019, Koji, Update, CDS, MC1 glitch removed (for now) and IMC locking recovered 
                            Reply  Fri Aug 23 18:46:17 2019, Jon, Update, CDS, c1iscaux remaining work 
                               Reply  Sun Aug 25 14:18:08 2019, gautam, Update, CDS, c1iscaux remaining work Screen_Shot_2019-08-25_at_10.38.37_PM.png
    Reply  Thu Jul 18 10:46:04 2019, gautam, Update, CDS, Database files made 
       Reply  Thu Jul 18 19:58:56 2019, gautam, Update, CDS, Work on Acromag chassis IMG_7771.JPGIMG_7770.JPGIMG_7772.JPG
          Reply  Fri Jul 19 19:44:03 2019, gautam, Update, CDS, Database file test Whitening.png
Message ID: 14850     Entry time: Mon Aug 19 14:36:21 2019     In reply to: 14849     Reply to this: 14851   14855
Author: gautam 
Type: Update 
Category: CDS 
Subject: c1iscaux remaining work 

Here is what is left to do:

  1. Strain relief of all cabling. Chub will take care of this in the coming days. I have said he can connect and disconnect cables as he pleases, but after this work, we may require a hard reboot of the Acromag chassis before restoring functionality to the channels, as it is known that the Acromags can sometimes get "stuck" by a sudden connection of voltage.
  2. Installation of DB15 cable to the P2 connector of the CM board and a DB9 cable to the ALS demod unit (LO and RF power monitors). These will arrive in the next couple of days and Chub will take care of the install.
  3. Design, manufacture and install of a custom version of the backplane P1 adaptor board with only 1 D37 connector - for some of the PD DC signals, a custom adaptor board, part number D010005 for which I can't find any schematics is already installed on the P2 connector, and makes the DC monitor signals available to 4 LEMO connectors. These signals are then digitized by the fast CDS system, presumably for PDH signal normalization. The footprint of this P2--->LEMO adaptor is such that we cannot simply install our P1---> 2xDB37 adaptor boards, because of space constraints. Fortunately, there is a simple fix to reduce the footprint of the board: remove the bottom DB37 connector, which is unused in the c1iscaux system except for the CM board. I recommend getting ~10 pcs of such boards, as it is also useful in a few other places, where the power cabling to the eurocrates are a space constraint. See Attachment #1 for a picture explaining this situation. Anyone want to volunteer to take care of this?
  4. In-situ testing. This is easiest done with some light available in the interferometer. Which in turn requires IMC to be locked. Which in turn requires satellite box fixing. Anyone want to volunteer to take care of this?
  5. Modify C0EDCU.ini to trend the new slow channels we may want long-term monitoring of (e.g. LO power levels to the Demod boards). Anyone want to volunteer to take care of this?
  6. Decide what to do about the CM latch logic. There are some contraints with the way the acromag register addressing works, that I've had to change the way the mbboDirect bits are controlled. Unfortunately, this seems to sometimes and unpredictably cause the bits to flip in a non-robust way, which is the whole point of having the latch in the first place. Either the latch logic needs to be improved, or we need to implement the latch logic in the fast CDS system, not the slow.

Today I set up the autoburt.req file for the c1iscaux channels, and confirmed that the snapshots are getting recorded. There were a lot of channels in the old autoburt.req file which I thought were un-necessary (and several which no longer exist), so now the only channels that are burt-ed are the whitening gains and states of the AA filters. If someone feels we need more channels to be snapshot recorded, you can add them to the file.

In the old target directory, there were also various versions of a "saverestore.req" file - why do we need this in addition to an autoburt? I guess it is possible they are used by the IFOconfigure scripts to setup some whitening gains etc...

Attachment 1: caseForSmallerFootprint.pdf  15.803 MB  Uploaded Mon Aug 19 16:10:38 2019  | Hide | Hide all
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