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  40m Log, Page 37 of 344  Not logged in ELOG logo
ID Date Author Type Categoryup Subject Text Attachments
  3811   Thu Oct 28 16:38:54 2010 josephbUpdateCDSFlaky fb, reverted inittab changes on fbProblem:
Yuta reported many of the signals
being displayed by dataviewer "fuzzier"
  
  3814   Thu Oct 28 21:20:11 2010 yutaUpdateCDSFlaky fb, tried DAQ re-install, but no helpSummary:
  Unfortunately, fb is flakier
than normal. 
  
  3815   Thu Oct 28 23:17:15 2010 yutaSummaryCDS[EMERGENCY] accidentally deleted daqdRana showed me that if c1sus machine runs
c1mcs stuff(and c1x02 stuff) only, we can
use dataviewer without crashing fb.
  
  3821   Fri Oct 29 11:25:15 2010 josephb, yutaSummaryCDS[EMERGENCY] accidentally deleted daqdProblem:
Missing daqd file, i.e. the framebuilder
executable.
  
  3822   Fri Oct 29 11:29:29 2010 josephbUpdateCDSHow I broke the frame builder yesterdayProblem:
Long before Yuta came along and deleted
daqd, I had done something to prevent the
  
  3827   Fri Oct 29 16:43:25 2010 josephbUpdateCDSc1ioo now talking to c1susProblem:
c1ioo was not able to talk to c1sus
because of timing issues.  This prevented
  
  3828   Fri Oct 29 18:37:33 2010 yutaSummaryCDSdaqd and current CDS statusBackground:
  Before Joe left(~ 1 hour ago),
fb was working for a while. But after he
 06-25-2009.NN_24ThreatLevel.GJH2L69BK.1.jpg 
  3829   Sat Oct 30 05:27:53 2010 yutaSummaryCDSCDS time delay measurementMotivation:
  We want to know the time delay
of CDS in the IOP scheme.
 delaysetup.pngCDSdelay.png 
  3830   Sat Oct 30 14:35:43 2010 KojiSummaryCDSCDS time delay measurementUnsatisfactory.
Neglecting the digital anti-imaging
 CDS_system_investigation_090323.pdf 
  3834   Mon Nov 1 11:34:08 2010 josephbUpdateCDSCA.Client.Exception spam fixedProblem:
CA.Client.Exception...............................................
  
  3836   Mon Nov 1 14:53:30 2010 josephb, alex, rolfUpdateCDSAlex updated FB and mx_streams codeProblem:
The framebuilder was being flaky. 
MX_streams would go down, prevent testpoints
  
  3837   Mon Nov 1 15:35:41 2010 josephbUpdateCDSFront end USR and CPU times now recorded by DAQProblem:
We have no record of how long the
CPUs are taking to perform a cycle's worth
  
  3838   Mon Nov 1 15:47:15 2010 yutaSummaryCDSCDS time delay measurementBackground:
  I measured CDS time delay last
week, but because of my lack of understanding
 downupsampling.pngCDSdelay2.png 
  3839   Mon Nov 1 16:43:24 2010 KojiSummaryCDSCDS time delay measurementUm, Beautiful.   
  3841   Mon Nov 1 19:32:08 2010 yutaSummaryCDSfb crashed? during c1ioo and c1mcs connection at ASCFrame builder
died again!!
  
  3842   Mon Nov 1 23:31:05 2010 yutaUpdateCDSchecked input hardware filter in single frequencyBackground:
  For input filter, we have analog
whitening filter and also digital whitening
  
  3844   Tue Nov 2 11:34:53 2010 josephb, alexUpdateCDSdiagconfd running, excitations back in dttProblem:
Diagnostic test tools was starting
with errors.
  
  3845   Tue Nov 2 13:51:40 2010 josephb, yutaUpdateCDSRFM slowdown problemProblem:
Each RFM memory location which needs
to be read by a front end model slows the
  
  3846   Tue Nov 2 15:24:18 2010 josephbUpdateCDSc1ioo and c1mcs only sending MC_L, MC1_PIT, MC1_YAWIn order to have the c1mcs model run, we're
running with only 3 RFM channels between
c1ioo and c1mcs at the moment.  This
  
  3849   Wed Nov 3 02:23:11 2010 yutaSummaryCDSchecking whitening filter boardSummary:
  Last night, I found that some
of the input channels have wrong hardware
 MC3SEN.png 
  3852   Wed Nov 3 09:32:00 2010 ranaSummaryCDSEurocard board swapping When swapping Eurocard boards, it
is safest to first turn down the power supplies
and then do the swapping. 
  
  3853   Wed Nov 3 15:13:55 2010 josephbUpdateCDSTemporary RFM slow read work aroundProblem:
Each RFM read in the c1mcs model
is adding ~7 microseconds to the cycle time. 
  
  3855   Wed Nov 3 17:01:01 2010 josephbSummaryCDSComparison of RFM read times Problem:
RFM reads are slow.  Rolf has
said it should take 2-3 microseconds per
  
  3857   Wed Nov 3 21:19:40 2010 yutaUpdateCDSput LOCKIN to c1ioo model and checked(Joe, Yuta)

Summary:
 Screenshot_C1IOO_LOCKIN.png 
  3860   Thu Nov 4 15:15:43 2010 josephbUpdateCDSModified feCodeGen.pl, fmseq.pl, and suspension screensFeature Requested:
Have the CPU_meter change change
color at various alarm levels.  These
  
  3861   Thu Nov 4 15:27:33 2010 josephb, yutaUpdateCDSc1ioo test points not workingProblem:
We can't access any of the c1ioo
computer testpoints.  Dataviewer and
  
  3863   Thu Nov 4 17:53:29 2010 yutaUpdateCDSprimitive python script for A2L measurementSummary:
 
I wrote
 a2ltest.png 
  3869   Fri Nov 5 15:20:18 2010 josephb, alexSummaryCDS40m computer slow down solvedProblem:
The 40m computers were responding
sluggishly yesterday, to the point of being
  
  3870   Fri Nov 5 16:40:22 2010 josephb, alexUpdateCDSc1ioo now has working awgtpmanProblem:
We couldn't set testpoints on the
c1ioo machine.
  
  3872   Fri Nov 5 21:49:12 2010 ranaSummaryCDS40m computer slow down solved


   
        
            
  
  3877   Sat Nov 6 16:13:14 2010 ranaSummaryCDS40m computer slow down solvedAs part of the effort to debug what was
happening with the slow computers, I disabled
the auto MEDM snapshots process that Yoichi/Kakeru
  
  3880   Mon Nov 8 14:30:15 2010 josephb, yutaUpdateCDSAdded LIGONDSIP setting to cshrc.40mWe added the following line to the cshrc.40m
file in the 64-bit linux and 32-bit linux
sections:
  
  3891   Thu Nov 11 04:32:53 2010 yutaSummaryCDSfound poor contact of DAC cable, previous A2L results were wrong(Koji, Jenne, Yuta)

  
  3895   Thu Nov 11 11:51:30 2010 KojiSummaryCDSfound poor contact of DAC cable, previous A2L results were wrongThe cause is apparent!
The connectors on the cables are wrong!
  
  3900   Thu Nov 11 21:07:49 2010 josephbUpdateCDSPlugged c1iscex into DAQ network - still causes network slowdownI connected the c1iscex computer to the
dedicated DAQ network switch (located in
1X7).
  
  3901   Thu Nov 11 23:35:23 2010 KojiSummaryCDSfound poor contact of DAC cable, previous A2L results were wrong[Koji / Yuta]
There were
 IMG_3698.jpgbad-boys.pngIMG_3705.jpgIMG_3706.jpg 
  3906   Fri Nov 12 10:49:34 2010 josephb, valeraUpdateCDSTest of ADC noiseTest:
Look at the effects of the ADC voltage
range on the ADC noise floor.
 ADC_noise.pdf 
  3910   Fri Nov 12 19:24:56 2010 KojiUpdateCDSTest of ADC noise[Koji Yuta]
We found one of the ADC cables were
left unconnected. This left the MC suspensions
  
  3912   Sat Nov 13 15:53:05 2010 yutaUpdateCDSdiagonalization of MC input matrixMotivation:
  MC is aligned from the A2L
measurement, but to do the beam centering
 MCspectraNov09.pngMCspectraNov13.pngMC1spetra_wrongmatrix.png 
  3915   Sun Nov 14 11:56:59 2010 valeraUpdateCDSTest of ADC noise 
We missed
  
  3919   Mon Nov 15 11:13:12 2010 josephbUpdateCDSModified rc.local to not start mx_streams automaticallyProblem:
c1iscex floods the network with about
1 gigabyte of error messages in a few seconds,
  
  3926   Mon Nov 15 16:26:46 2010 josephbUpdateCDSc1iscex is now running and the network hasn't diedProblem:
c1iscex was spamming the network
with error messages.
  
  3935   Tue Nov 16 21:42:31 2010 ranaUpdateCDSScreen Time FixI learned today that the following python
code will do a find/replace to fix the TIME
string on any MEDM screen which has a whited
  
  3938   Wed Nov 17 10:39:20 2010 josephbUpdateCDSScreen Time FixAn improved python code to apply a replacement
to all *.adl files in a directory would be:
import
  
  3940   Wed Nov 17 16:02:30 2010 josephbUpdateCDSModified feCodeGen.pl to fix filtMuxMatrix name generationProblem:
Sometime in the last 3 weeks, probably
when Alex brought his latest changes from
  
  3941   Wed Nov 17 20:44:59 2010 yutaSummaryCDSno QPD channels on c1sus machine today(Joe, Suresh, Yuta)

  
  3945   Thu Nov 18 11:06:20 2010 josephbUpdateCDSc1sus and ADCsProblem:
ADCs are timing out on c1sus when
we have more than 3.
  
  3946   Thu Nov 18 14:05:06 2010 josephb, yutaUpdateCDSc1sus is alive!Problem:
We broke c1sus by moving ADC cards
around.
  
  3947   Thu Nov 18 14:19:01 2010 josephbUpdateCDSSwapped c1auxex and c1auxey codesProblem:
We had not switched
the c1aux crates when we renamed the arms,
  
  3948   Thu Nov 18 16:32:21 2010 yutaSummaryCDScurrent damping status for all optics c1sus handlesSummary:
   I set Q-values for each
ringdown of PRM, BS, ITMX, ITMY, MC1, MC2,
 c1susdampings.png 
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