| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6039
|
Tue Nov 29 17:10:39 2011 |
Den | Update | digital noise | SOS creation | One of the possibilities that we see a
large low-frequency digital noise is due
to Foton. I've checked the SOS coefficients |
|
|
6041
|
Tue Nov 29 18:31:40 2011 |
Den | Update | digital noise | Foton error | In the previous elog we've compared
Matlab and Foton SOS representations using
low-order filter. Now we move on to high |
|
|
6045
|
Tue Nov 29 22:19:26 2011 |
Den | Update | digital noise | straight line | I tried to understand what part of
the signal is corrupted while passing through
a digital straight line without any filters. |
|
|
6046
|
Tue Nov 29 22:54:49 2011 |
Den | Update | digital noise | single precision | In the previous elog we've proved
that signals C1:SUS-MC3_LSC_EXCMON and C1:SUS-MC3_LSC_OUTMON
are in single precision. Now we try to understand |
|
|
6061
|
Thu Dec 1 18:30:39 2011 |
Vladimir, Den | Update | digital noise | Foton error | Foton Matlab Error
We investigated
some more the discrepancy between Matlab |
|
|
6062
|
Fri Dec 2 17:43:46 2011 |
rana | Update | digital noise | Foton error | It would be useful to see some plots so
we could figure out exactly what magnitude
and phase error correspond to "gross" |
|
|
6063
|
Fri Dec 2 20:16:41 2011 |
Den | Update | digital noise | first order transition | In order to verify our theory about coherence
corruption in linear systems due to the line
|
|
|
6083
|
Wed Dec 7 20:55:44 2011 |
Vladimir, Den | Update | digital noise | Matlab error |
|
|
|
7021
|
Tue Jul 24 21:16:55 2012 |
Den | Update | digital noise | quantization test | I'm trying to get some intuition how digital
noise due to quantization shows up in iir
filters. I decided to do tests in C using |
|
|
7031
|
Wed Jul 25 16:55:01 2012 |
Den | Update | digital noise | notch, lowpass filters | Direct Form 2 is noisy in the first
test. This is the one similar to Matt's in
his presentation. Input signal was a sine |
6x |
|
7034
|
Wed Jul 25 23:03:22 2012 |
rana | Update | digital noise | notch, lowpass filters | If the problem is the precision in DTT,
then why would the noise change when the
corner frequency of the filter is changed? |
|
|
7036
|
Thu Jul 26 10:22:03 2012 |
Den | Update | digital noise | notch, lowpass filters |
|
|
|
7041
|
Thu Jul 26 17:39:49 2012 |
Den | Update | digital noise | biquad key is working | I've filtered a 1 Hz sin wave excitation
with a notch filter inside c1sus and c1rfm
models. The biquad key is switched on in |
|
|
7042
|
Thu Jul 26 21:31:44 2012 |
Den | Update | digital noise | online biquad works |
|
|
|
7045
|
Fri Jul 27 14:30:49 2012 |
Jamie | Update | digital noise | biquad key is working | What is "DQF"? Is that
the biquad? And what is the difference
between DF1 and DF2? Why don't you |
|
|
7050
|
Mon Jul 30 14:24:25 2012 |
Den | Update | digital noise | biquad key is working |
|
|
|
7052
|
Mon Jul 30 16:05:36 2012 |
Den | Update | digital noise | filter checker | We decided to write a script that
will check online filters for digital noise.
One method can be implemented using the following |
|
|
7085
|
Sat Aug 4 17:32:31 2012 |
Den | Update | digital noise | filter checker | The script estimates digital noise produces
by online filters. First version of Matlab
files and complied c files are in scripts/digital_noise |
|
|
7676
|
Tue Nov 6 18:39:16 2012 |
Den | Update | digital noise | ifo checking system | Matlab version of ifo digital noise estimation
code is almost ready. It estimates digital
noise introduced by each filter bank in each |
|
|
2131
|
Wed Oct 21 17:12:30 2009 |
Alberto | Update | elog | Browser context menu enabled on the Elog under HTM editing mode | On behalf of Steve and of the rest of the
not-native-English community at the 40m willing
to have their browser's spell checker working |
|
|
2200
|
Fri Nov 6 19:29:24 2009 |
Jenne | Update | elog | elog acting up | elog was acting up again (not running),
so I restarted it. |
|
|
2201
|
Fri Nov 6 20:10:15 2009 |
Jenne | Update | elog | elog acting up |
|
|
|
2302
|
Thu Nov 19 16:04:48 2009 |
Alberto | Configuration | elog | Elog debugging output - Down time programmed today to make changes | We want the elog process to run in verbose
mode so that we can see what's going. The
idea is to track the events that trigger |
|
|
2303
|
Thu Nov 19 18:49:55 2009 |
Alberto | Configuration | elog | Elog debugging output - Down time programmed today to make changes |
|
|
|
2562
|
Tue Feb 2 18:15:47 2010 |
Alberto | Update | elog | Elog restarted it | Zach made me notice that the elog
had crashed earlier on this afternoon.
I just restarted it with the restarting |
|
|
2567
|
Wed Feb 3 10:46:12 2010 |
Alberto | Update | elog | elog restarted | Again, this morning Zach told me
that the elog had crashed while he was trying
to post an entry. |
|
|
2569
|
Thu Feb 4 00:59:52 2010 |
rana | Update | elog | elog restarted | I restarted the ELOG on NODUS just
now. Our attempt to set up error logging
worked - it turns out ELOG was choking |
|
|
2669
|
Fri Mar 12 13:52:18 2010 |
Zach | Update | elog | elog restarted | The elog was down and I ran the restart
script. |
|
|
2702
|
Tue Mar 23 15:38:26 2010 |
Alberto | Update | elog | elog just restarted | I found the elog down and I restarted it.
Then, after few seconds it was down
again. Maybe someone else was messing with |
|
|
2739
|
Wed Mar 31 10:34:02 2010 |
josephb | Update | elog | Elog not responding this morning | When I went to use the elog this morning,
it wasn't responding. I killed the
process on nodus, and then restarted, per |
|
|
2758
|
Fri Apr 2 08:52:21 2010 |
Alberto | Update | elog | elog restarted | i just restarted the elog for the third
time in the past 12 hours.
I checked the elog.log file to debug |
|
|
2817
|
Tue Apr 20 13:00:52 2010 |
Zach | Update | elog | elog restarted | I restarted the elog with the restart
script as it was down. |
|
|
2853
|
Wed Apr 28 08:55:19 2010 |
Zach | Update | elog | elog restarted | Restarted the elog with the script
as it was down. |
|
|
2854
|
Wed Apr 28 09:21:16 2010 |
Zach | Update | elog | elog restarted | And again.
|
|
|
2979
|
Tue May 25 07:58:23 2010 |
kiwamu | Update | elog | elog down | I found the elog got down around 7:30 am
in this morning.
So I restarted it by running the |
|
|
3071
|
Sat Jun 12 18:03:00 2010 |
sharmila | Update | elog | Temperature Controller | Kiwamu and I setup a serial port terminal
for receiving data from TC200 via a RS-232
USB interface. It was done using a Python |
|
|
3181
|
Thu Jul 8 17:29:20 2010 |
Katharine, Sharmila | Update | elog | |
|
6x |
|
3200
|
Mon Jul 12 21:26:02 2010 |
Katharine, Sharmila | Update | elog | maglev coils | The connection between our coil wires and
BNC terminals was pretty awful (soldered
wires broke off |
|
|
3212
|
Wed Jul 14 01:05:27 2010 |
Sharmila,Katharine | Summary | elog | Maglev | Yesterday we hooked up the Quadrant Maglev
control to the power supply to test the components
in the Input/Output part of the circuit. |
|
|
3234
|
Fri Jul 16 12:36:00 2010 |
Katharine, Sharmila | Update | elog | levitation | After last night's challenge (or inspiration),
we levitated our magnet this morning.
Since the nice Olympus camera is not currently |
|
|
3250
|
Tue Jul 20 11:55:15 2010 |
Sharmila,Katharine | Update | elog | Maglev | We plotted the transfer functions for the
maglev control circuit and compared them
with the plots from the spectrum |
|
|
3382
|
Sat Aug 7 10:47:38 2010 |
Koji | Summary | elog | elog restarted / source of the trouble eliminated | Nancy
notified me that the elog crashed. It was |
|
|
3390
|
Tue Aug 10 01:05:17 2010 |
Zach | Update | elog | elog restarted | Elog was down. Restarted with the
script. |
|
|
3396
|
Wed Aug 11 02:44:37 2010 |
Zach | Update | elog | elog restarted | You'll never guess what happened: the elog
crashed!
I restarted it with the script. Yay. |
|
|
3401
|
Wed Aug 11 16:13:59 2010 |
Jenna | Update | elog | elog restarted | The elog crashed, so we restarted it again. |
|
|
3406
|
Thu Aug 12 11:39:27 2010 |
Zach | Update | elog | elog restarted | with script |
|
|
3415
|
Thu Aug 12 23:17:54 2010 |
Zach | Update | elog | restarted | script |
|
|
3416
|
Thu Aug 12 23:41:48 2010 |
Jenne | Update | elog | restarted |
|
|
|
3420
|
Fri Aug 13 13:11:30 2010 |
Dmass | Update | elog | restarted |
|
|
|
3426
|
Mon Aug 16 23:13:25 2010 |
Zach | Update | elog | e to the log | Zach
I get so many freebies
it's ridiculous
|
|