| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8875
|
Thu Jul 18 21:12:58 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-All channels modified |
I carried some further modifications
and tests to the AI Board. Details and observations |
|
|
16218
|
Tue Jun 22 11:56:16 2021 |
Anchal, Paco | Update | SUS | ADC/Slow channels issues | We checked back in time to see how the
BS and PRM OSEM slow channels are zero. It
was clear that they became zero when we worked |
|
|
16219
|
Tue Jun 22 16:52:28 2021 |
Paco | Update | SUS | ADC/Slow channels issues | After sliding the alignment bias around
and browsing through elog while searching
for "stuck" we concluded the ITMX |
|
|
13661
|
Wed Feb 28 19:13:25 2018 |
gautam | Update | ALS | ADC test for differential receiving in c1lsc | [koji,
gautam]
we did a bunch of tests to figure |
|
|
14194
|
Thu Sep 6 14:21:26 2018 |
gautam | Update | CDS | ADC replacement in c1lsc expansion chassis | Todd E. came by this morning and gave us
(i) 1x new ADC card and (ii) 1x roll of 100m
(2017 vintage) PCIe fiber. This afternoon, |
|
|
14195
|
Fri Sep 7 12:35:14 2018 |
gautam | Update | CDS | ADC replacement in c1lsc expansion chassis | Looks like the ADC was not to blame, same
symptoms persist.
|
|
|
14196
|
Mon Sep 10 12:44:48 2018 |
Jon | Update | CDS | ADC replacement in c1lsc expansion chassis | Gautam and I restarted the models on c1lsc,
c1ioo, and c1sus. The LSC system is functioning
again. We found that only restarting c1lsc |
|
|
1918
|
Mon Aug 17 07:01:09 2009 |
Clara | Update | PEM | ADC noiseness | I shorted the inputs on three channels
and the outputs on three channels of the
Guralp box, and I did similar things with |
|
|
13419
|
Wed Nov 8 16:39:24 2017 |
Kira | Update | PEM | ADC noise measurement | Gautam and I measured the noise of the
ADC for channels 17, 18, and 19. We plan
to use those channels for measuring the noise |
|
|
13676
|
Fri Mar 9 12:59:53 2018 |
Kira | Update | PEM | ADC noise measurement | [Kira, Gautam]
I ceated a simple circuit that
takes in 15V and outputs precisely 5V by |
|
|
6821
|
Fri Jun 15 13:33:39 2012 |
yuta | Update | Green Locking | ADC noise contribution to ALS | ADC noise is not a limiting noise source
in a current ALS setup.
|
|
|
13794
|
Thu Apr 26 20:22:21 2018 |
Kevin | Update | PEM | ADC common mode rejection with new seismometer connections | Yesterday I wired the outputs from the
seismometers directly to the ADC input bypassing
the old AA board circuit as is described |
|
|
13849
|
Wed May 16 21:02:22 2018 |
Kevin | Update | PEM | ADC common mode rejection with new seismometer connections | As described in this
elog, the ADC for the seismometers now
has the signals wired directly to the ADC |
|
|
5787
|
Wed Nov 2 17:33:28 2011 |
Katrin | Update | Green Locking | ADC channels for slow control | connector J9B of hardware ADC --> ch1
in software ADC --> GCY_ERR
connector J14 of hardware ADC --> |
|
|
7228
|
Sun Aug 19 00:54:07 2012 |
Masha | Update | PEM | ADC channel switch, triangulation script | Since the classification finally works
(or seems to work..), I wrote triangulation
scripts in Python which triangulate the signals, |
|
|
16008
|
Thu Apr 8 20:58:17 2021 |
Koji | Update | CDS | ADC adapter boards assembly | 5x 16bit ADC adapter boards (D0902006)
assembled. |
|
|
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 |
|
|
1063
|
Tue Oct 21 16:17:45 2008 |
Yoichi | Update | PSL | AD797 Oscillation in the FSS board | I checked each op-amp's output in the FSS
board to see if any indication of slew-rate
saturation can be found.
|
|
|
6534
|
Fri Apr 13 16:09:43 2012 |
Suresh | Update | Computer Scripts / Programs | ACAD 2002 installed on C21530 | I have installed
ACAD 2002 on one of the Windows machines |
|
|
1120
|
Fri Nov 7 08:08:00 2008 |
steve | Update | PEM | AC turned off in IFO room | All [COLOR=red]tree[/COLOR] AC units in IFO
room 104 switched off at 7:45am
I'm looking for the periodic thump signal |
|
|
6273
|
Fri Feb 10 15:54:27 2012 |
steve | Update | PEM | AC turned back ON | The air cond was off for 2 hrs. I
just switched it back on at 15:51 |
|
|
7856
|
Wed Dec 19 11:53:23 2012 |
Steve | Update | VAC | AC removed | Koji, Manasa, Jenne, Jamie, Bob and
Steve
Access connector removed this morning |
|
|
8933
|
Mon Jul 29 16:04:40 2013 |
Steve | Update | VAC | AC removed | Manasa, Eric, Evan, Koji and Steve,
Access connector removed in order
to complete alignment. Light aluminum with |
|
|
8934
|
Mon Jul 29 16:15:13 2013 |
Koji | Update | VAC | AC removed | Prior to the access connector removal,
Manasa and I aligned the IFO mirrors.
The arms were locked and aligned by |
|
|
6432
|
Wed Mar 21 10:31:28 2012 |
steve | Update | SAFETY | AC power to ETMY turned off | ETMY sus damping was disabled. Green locking
laser and associated electronics turned off.
Computers and power supplies turned off at |
|
|
6433
|
Wed Mar 21 11:32:47 2012 |
steve | Update | SAFETY | AC power to ETMX turned off |
|
|
|
6864
|
Mon Jun 25 08:21:40 2012 |
steve | Update | General | AC power disturbance on Sat |
|
|
|
6434
|
Wed Mar 21 19:12:27 2012 |
steve | Update | Computers | AC power back on both ends |
|
|
|
2842
|
Mon Apr 26 11:13:28 2010 |
steve | Omnistructure | PEM | AC on/off is working |
|
|
|
1121
|
Fri Nov 7 10:52:57 2008 |
steve | Update | PEM | AC is back on | The 20 minutes and 6 sec thumps are not related
to the 40m ac units
This period is precisely right on so it is |
|
|
1122
|
Fri Nov 7 15:58:10 2008 |
rana | Update | PEM | AC is back on | I'll bet Steve a dollar that it is mechanical.
The attached PDF compares all of the accelerometers
from right now.
|
|
|
5988
|
Wed Nov 23 14:47:14 2011 |
Jenne | Configuration | Environment | AC in the IFO room was off | I turned it back on, maybe around 11am?
Definitely a little while before the 12:30
meeting. |
|
|
16054
|
Tue Apr 20 10:52:49 2021 |
Anchal, Paco | Update | SUS | AC gain coil output balancing for IMC | [Paco, Anchal]
We adopted the following
procedure to balance the coil output gains |
|
|
960
|
Wed Sep 17 19:13:47 2008 |
Alberto | Update | General | ABSL: status | I installed the setup for measuring TEM01/10
on the X end table.
I'm leaving. I shut the laser, flipped down |
|
|
979
|
Mon Sep 22 20:00:35 2008 |
Alberto | Update | General | ABSL: running measurement | I'm leaving the X arm locked on the TEm01
mode while a measurement is running. Just
please wait for 40 minute if you need the |
|
|
956
|
Wed Sep 17 13:58:36 2008 |
Alberto | Update | General | ABSL: results from the X arm | Today I repeated the measurement of the FSR
on the X arm cavity. The noise in the transmitted
power that made the measures fluctuate was |
|
|
946
|
Sun Sep 14 18:30:32 2008 |
Alberto | Update | General | ABSL: measured X arm | Today I measured the X arm FSR.
Hi moved the fast PD (Thor Labs PDA255) from
the Y end table to the X end table. I had |
|
|
947
|
Sun Sep 14 19:29:07 2008 |
Alberto | Update | General | ABSL: measured X arm | [quote]Today I measured the X arm FSR.
Hi moved the fast PD (Thor Labs PDA255) from
the Y end table to the X end table. I had |
|
|
987
|
Wed Sep 24 17:57:04 2008 |
Alberto | Update | General | ABSL: FSS Slow Actuator Control | Rana, Alberto
Today when I started working with the PLL |
|
|
8303
|
Mon Mar 18 12:02:12 2013 |
Annalisa | Configuration | ABSL | ABSL setup for g-factor measurement of PRC | Motivations
The ABSL
technique has been already used in the past
to measure the |
|
|
4940
|
Tue Jul 5 17:38:46 2011 |
kiwamu | Update | ABSL | ABSL laser frequency-locked | In this
past weekend the ABSL laser was successfully |
|
|
5117
|
Thu Aug 4 09:42:19 2011 |
Koji | Update | ABSL | ABSL Laser shutter closed | The shutter of the ABSL laser is closed
for the vent work. |
|
|
5064
|
Sat Jul 30 00:33:33 2011 |
Koji | Update | PSL | ABSL Laser crystal temp left largely excited & left unattended for more than 3hours | I
found that the ref cav trans CCD view was
blinking with 30-50 fringe amplitudes. This |
|
|
5065
|
Sat Jul 30 02:47:43 2011 |
rana | Update | PSL | ABSL Laser crystal temp left largely excited & left unattended for more than 3hours | Hmm. Should have only been +/- 1
GHz. Some setting got changed apparently...
This is a part of the RefCav temperature |
|
|
4996
|
Wed Jul 20 06:52:01 2011 |
Suresh | Update | LSC | ABSL - PSL beat lock | The ABSL locking setup to the PSL is down.
According
the plan, I started to use the IR beam dumped
after the doubling crystal for the IR beat |
|
|
8581
|
Wed May 15 17:38:49 2013 |
Jamie | Summary | CDS | AA/AI requirements |
|
|
|
15709
|
Fri Dec 4 19:23:40 2020 |
Koji | Update | Electronics | AA/AI board testing ongoing | I have the setup built for the AA/AI board
testing around the PD testing area. Please
let me leave it like that for a week or so. |
|
|
422
|
Wed Apr 16 21:11:12 2008 |
rana | Summary | DAQ | AA/AI Filters for the DAQ & FE systems | I used Foton to make up some new filters which
will be used all over the project in order
to downsample/upsample.
|
|
|
3911
|
Fri Nov 12 20:40:51 2010 |
josephb, yuta, valera | Configuration | Electronics | AA voltage range | We changed the range of the two SUS AA
boards in the corner from +/-2 V to +/-10
V by changing the supply voltage from +/-5 |
|
|
5022
|
Sun Jul 24 20:36:03 2011 |
haixing | Summary | Electronics | AA filter tolerance analysis | Koji and Haixing,
We did a tolerance analysis to specify
the conner frequency for passive low-pass |
6x |