ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
6580
|
Fri Apr 27 12:12:14 2012 |
Den | Update | CDS | c1ioo is back | Rolf came to the 40m today and managed
to figure out what the problem is. Reading
just dmesg was not enough to solve the problem. |
|
6581
|
Fri Apr 27 13:32:06 2012 |
Den | Update | PEM | seism channels | A few weeks ago I found that GUR2_X signal
is biased from 0 to 800 counts in average.
I decided that the corresponding channel |
|
6593
|
Wed May 2 19:47:20 2012 |
Den | Update | PEM | EM 172 nonlinearities | I've checked new small EM172 microphones
for nonlinearities using Koji's Mac Book
speakers. EM172 + Mac nonlinearities are |
|
6594
|
Wed May 2 21:04:06 2012 |
Den | Update | PEM | EM 172 coherence | I measured coherence between 2 EM 172 microphones
in a "quiet room" with SR785
|
|
6604
|
Sat May 5 01:24:07 2012 |
Den | Update | PSL | PMC | I was interested what whitening filter
do we have between MC servo and ADC. The
shape is in the figure below, SR provided |
 |
6606
|
Sat May 5 10:20:21 2012 |
Den | Update | PSL | PMC |
|
|
6608
|
Sat May 5 20:42:59 2012 |
Den | Update | PSL | PMC | [Koji, Den]
Koji was right that I misaligned
everything during the alignment work. I assumed |
|
6609
|
Sun May 6 00:11:00 2012 |
Den | Update | CDS | mx_stream | c1sus and c1iscex computers could not connect
to framebuilder, I restarted it, did not
help. Then I restarted mx_stream daemon on |
|
6610
|
Sun May 6 01:41:55 2012 |
Den | Update | PEM | seismic in x,y arms | I locked x,y arms and measured coherence
between POS{X,Y}11_I_ERR, MC_F and seismometer
signals. |
|
6611
|
Mon May 7 01:07:58 2012 |
Den | Update | IOO | seismic in mcf | I tried to figure out where additional
(to seismic) noise enters to MC_F, so the
coherence below 1 Hz is low (~0.2-0.5). I've |
   |
6612
|
Mon May 7 12:57:34 2012 |
Den | Update | IOO | WFS noise in MC | I've measured coherence between seismometer
signals and OSEMS of MC 1,2,3
|
   |
6613
|
Mon May 7 17:28:29 2012 |
Den | Update | IOO | WFS noise in MC |
|
|
6615
|
Mon May 7 20:15:37 2012 |
Den | Update | IOO | WFS noise in MC |
|
|
6616
|
Mon May 7 21:05:38 2012 |
Den | Update | CDS | biquad filter form | I wanted to switch the implementation of
IIR_FILTER from DIRECT FORM II to BIQUAD
form in C1IOO and C1SUS models. I modified |
|
6618
|
Mon May 7 21:46:10 2012 |
Den | Update | CDS | guralp signal error | GUR1_XYZ_IN1 and GUR2_XYZ_IN1 are the same
and equal to GUR2_XYZ. |
|
6619
|
Mon May 7 22:39:37 2012 |
Den | Update | CDS | c1sus | [Jenne, Den]
We decided to reboot C1SUS machine
in hope that this will fix the problem with |
|
6623
|
Tue May 8 09:58:17 2012 |
Den | Update | CDS | SUS -> FB | [Alex, Den]
It |
|
6624
|
Tue May 8 10:43:42 2012 |
Den | Update | CDS | biquad filter form |
|
|
6632
|
Wed May 9 10:46:54 2012 |
Den | Update | CDS | OAF model not seeing MCL correctly |
|
|
6633
|
Wed May 9 11:31:50 2012 |
Den | Update | CDS | RFM | I added PCIE memory cache flushing to c1rfm
model by changing 0 to 1 in /opt/rtcds/rtscore/release/src/fe/commData2.c
on line 159, recompiled and restarted c1rfm. |
|
6635
|
Wed May 9 15:02:50 2012 |
Den | Update | CDS | RFM |
|
|
6638
|
Thu May 10 21:13:01 2012 |
Den | Update | Electronics | ADC 3 | ADC 3 INPUT 4 (#3 in the c1pem model if
you count from 0) is bad. It adds DC = ~1
V to the signal as well as noise. I plugged |
|
6639
|
Thu May 10 22:05:21 2012 |
Den | Update | CDS | FB | Already for the second time today all computers
loose connection to the framebuilder. When
I ssh to framebuilder DAQD process was not |
|
6642
|
Fri May 11 23:33:41 2012 |
Den | Update | Adaptive Filtering | offline vs online | I've compared offline Wiener filtering
with online static + adaptive filtering for
MC_F with GUR1_XYZ and GUR2_XYZ as witness |
|
6651
|
Sun May 20 19:57:51 2012 |
Den | Update | PEM | microphones | I've soldered EM172 microphones to BNC
connectors to get data from them.
|
7x |
6655
|
Tue May 22 00:23:45 2012 |
Den | Update | CDS | transmission error monitor | I've started to create channels and an
medm screen to monitor the errors that occur
during the transmission through the RFM model. |
|
6661
|
Tue May 22 20:01:26 2012 |
Den | Update | CDS | error monitor | I've created transmission error monitors
in rfm, oaf, sus, lsc, scx, scy and ioo models.
I tried to get data from every channel transmitted |
|
6664
|
Tue May 22 23:36:02 2012 |
Den | Update | PEM | mircophones | I've put 5 EM172 microphones close together
and measured there signal and coherence.
They are plugged in to accelerometer channels. |
6x |
6670
|
Thu May 24 01:17:13 2012 |
Den | Update | CDS | PMC autolocker |
|
|
6671
|
Thu May 24 02:55:36 2012 |
Den | Update | PEM | acoustic noise in MCL | Mic in the PSL showed that fluctuations
in the MCL in the frequency range 10 - 100
Hz are due to acoustic noise. I've measured |
|
6673
|
Thu May 24 12:23:00 2012 |
Den | Update | General | connection error monitor for the website | The main page of connection error monitor
can be a scheme of computers and models with
connections. If there is an error in connection, |
 |
6674
|
Thu May 24 13:28:38 2012 |
Den | Update | PEM | HEPA | HEPA filter was running at 90% of max.
I reduced it to 20%. Acoustic noise moved
down |
  |
6680
|
Fri May 25 02:56:44 2012 |
Den | Update | SUS | MC3 local damping | I've terminated input to AA filters and
measured signal to coils C1:SUS-MC3_??COIL_OUT.
|
  |
6681
|
Fri May 25 13:24:48 2012 |
Den | Update | SUS | MC3 | AA IN -> COIL DRIVER IN transfer function
for MC3
|
 |
6689
|
Sat May 26 00:08:41 2012 |
Den | Update | IOO | MC_F low frequency noise | MC_F low frequency noise might be
due to local damping electronics. I did not
measure OSEM noise, but even without it electronics |
    |
6691
|
Sat May 26 15:59:19 2012 |
Den | Update | IOO | Guralp noise is high | As I've mentioned in yesterday's
elog MC mirrors start to move in a synchronistic
manner. I've plotted DELTA_GUR = GUR1_X - |
  |
6692
|
Sat May 26 20:40:48 2012 |
Den | Update | PEM | experiments with seismic noise | I measured relative motion of 2 seismometers
separated by 4, 18 and 38 feet.
|
    |
6693
|
Sat May 26 23:57:11 2012 |
Den | Update | PEM | Guralp noise | I've looked through the Guralp manual to
figure out what noise do they declare. They
present it in acceleration units in dB relative |
|
6695
|
Sun May 27 23:15:22 2012 |
Den | Update | PEM | experiments with seismometers | I wondered if linoleum is a reason of high
Guralp noise. I measured Guralp noise in
3 cases: they stand on a very soft piece |
   |
6696
|
Tue May 29 00:35:57 2012 |
Den | Update | PEM | guralp readout box | I measured the frequency response of the
Guralp readout box and noise by providing
sin signal of amplitude 50 mV at 15 Hz for |
|
6697
|
Tue May 29 00:39:52 2012 |
Den | Update | PEM | Guralp noise | I've connected Guralp output to the ADC
without readout box. I've got the same noise
at low frequencies and even worse noise at |
|
6698
|
Tue May 29 00:48:51 2012 |
Den | Update | PEM | sts readout box | STS readout box seems to be partly broken.
I've terminated inputs from the seismometer
and measured the output. I could not do this |
|
6699
|
Tue May 29 00:53:57 2012 |
Den | Update | CDS | problems | I've noticed several CDS problems:
Communication sign on
C1SUS model turns to red once in a while. |
|
6712
|
Tue May 29 22:48:37 2012 |
Den | Update | PEM | Guralp noise | I've checked whether the Guralp noise that
we see comes not from seismometer but from
ADC or readout box. I did 2 separate measurements |
|
6721
|
Wed May 30 22:51:32 2012 |
Den | Update | PEM | guralp isolation box | When I've put Guralps inside the isolation
box, the signal from seismometers increased
and was out of AA board range. I've reduced |
|
6730
|
Thu May 31 11:38:19 2012 |
Den | Update | PEM | isolation system | I've put Guralps into the Steve's 2 box
isolation system. Noise got better, coherence
between 2 seismometers improved. We still |
 |
6747
|
Sun Jun 3 01:30:07 2012 |
Den | Update | PEM | sts-2 and guralp in isolation box | We have 2 sts-2 readout box - pink and
blue. Pink outputs 12 DVC - this a problem
of amplifier. This box has a rectifier (the |
   |
6748
|
Sun Jun 3 23:50:00 2012 |
Den | Update | CDS | biquad=1 | From now all models calculate iir filters
using biquad form. I've added biquad=1 to
cdsParameters to all models except c1cal, |
|
6806
|
Tue Jun 12 17:29:28 2012 |
Den | Update | CDS | dq channels | All PEM and IOO DQ channels disappeared.
These channels were commented in C1???.ini
files though I've uncommented them a few |
|
6872
|
Mon Jun 25 21:54:52 2012 |
Den | Update | Computer Scripts / Programs | PMC locker |
|
|