| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
173
|
Thu Dec 6 15:21:59 2007 |
alberto | Frogs | Electronics | RF Transfer Function of Stiff Aluminum Wires | Transfer function of 3cm long Aluminum wires
and of 3cm stranded wires |
|
|
172
|
Wed Dec 5 23:19:03 2007 |
Andrey | Configuration | PEM | Accelerometers are turned on |
All accelerometers have been turned on, as
Alan asked during Wednesday meeting.
|
7x |
|
171
|
Wed Dec 5 20:32:51 2007 |
tobin | Update | PSL | ISS dark noise | The ISS dark noise is not coming from the
PD heads; the spectrum is essentially unchanged
when the PD is unplugged from the ISS. Did |
|
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170
|
Wed Dec 5 19:25:07 2007 |
rana | DAQ | CDS | DMF | I made a database file on C1AUX called dmf.db.
It has 9 DMF EPICS channels which are also
trended
|
|
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169
|
Wed Dec 5 18:22:03 2007 |
tobin | Update | PSL | ISS dark noise | Attached is a plot of the dark noise spectrum
of the ISS photodiodes (1) before fooling
with them, (2) after replacing the 4151's |
|
|
168
|
Wed Dec 5 18:08:36 2007 |
Andrey | Update | ASC | Optical Lever laser for ETMX is installed |
A new laser with \lambda=633nm has been intalled
and the mirror adjusted so that the signal |
|
|
167
|
Wed Dec 5 17:49:57 2007 |
tobin | Update | PSL | ISS | Attached is a plot of the ISS RIN with a variety
of gain settings.
|
|
|
166
|
Wed Dec 5 16:57:36 2007 |
tobin | HowTo | Computer Scripts / Programs | SR785 data converter on linux | I was pleased to find that the SR785 Data
Viewer (including the command line conversion
utility) installs and works in linux using |
|
|
165
|
Wed Dec 5 13:49:08 2007 |
alberto | Update | Electronics | RF AM PD lines monitor | In the last weeks I’ve been working on the
design of an electronic board to measure
directly the power of the main spectral lines |
|
|
164
|
Wed Dec 5 10:57:08 2007 |
alberto | HowTo | Computers | Connecting the GPIBto USB interface to the Dell laptop | The interface works only on one of the USB
ports of the laptop (the one on the right,
looking at the computer from the back). |
|
|
163
|
Tue Dec 4 23:16:35 2007 |
tobin | Update | PSL | ISS | I was confused to find that I could increase
the ISS gain slider all the way from 15dB
to 30dB without seeing much of any increase |
|
|
162
|
Mon Dec 3 22:20:09 2007 |
tobin | Configuration | PSL | ISS | I replaced the painfully short 1' cables on
the ISS photodiodes with luxurious five foot
cables, made by chopping a ten foot Amphenol |
|
|
161
|
Mon Dec 3 19:44:58 2007 |
Accelerometers on new mounts | Configuration | PEM | Andrey |
I (Andrey) continued today working with new
accelerometer mounting. (see entry #151 about |
|
|
160
|
Mon Dec 3 19:06:49 2007 |
rana | DAQ | Computer Scripts / Programs | linemon | I turned up my nose at Matlab's special tools.
I modified the linetracker to use the
relationship [U][B]phase = 2*pi*f*t[/B][/U] |
|
|
159
|
Mon Dec 3 17:55:39 2007 |
tobin | HowTo | Computer Scripts / Programs | linemon | Matlab's Signal Processing toolbox has a [url=http://www.mathworks.com/access/helpdesk/help/toolbox/signal/index.html?/access/helpdesk/help/toolbox/signal/spectrum.html]set
of algorithms for identifying sinusoids in
data[/url]. Some of them (e.g., [url=http://www.mathworks.com/access/helpdesk/help/toolbox/signal/index.html?/access/helpdesk/help/toolbox/signal/rootmusic.html&http://www.mathworks.com/cgi-bin/texis/webinator/search/]rootmusic[/url]) |
|
|
158
|
Mon Dec 3 16:24:47 2007 |
tobin | HowTo | Computers | GNU screen | [url=http://jmcpherson.org/screen.html]GNU
screen[/url] is a utility that can be quite
handy for managing long-running psuedo-interactive |
|
|
157
|
Mon Dec 3 00:10:42 2007 |
rana | DAQ | Computer Scripts / Programs | linemon | I've started up one of our first Matlab based
DMT processes as a test.
|
|
|
156
|
Sun Dec 2 21:13:16 2007 |
rana | Configuration | IOO | MC SUS re-alignment | |
|
|
155
|
Sun Dec 2 21:07:39 2007 |
rana | Configuration | IOO | MC SUS re-alignment | [COLOR=darkblue][CODE]you asked for: diff
2007/12/01,4:58:48 2007/12/03,4:58:48 utc
'MC.*COMM'
|
|
|
154
|
Sun Dec 2 21:02:12 2007 |
rana | Configuration | IOO | MC SUS re-alignment | [COLOR=purple][SIZE=2][B][FONT=Comic Sans
MS]The spot on MC2 was not centered, so I
put it back in the center:[/FONT][/B][/SIZE][/COLOR]
|
|
|
153
|
Sun Dec 2 17:37:33 2007 |
rana | Omnistructure | Computers | Network Cabling in the Office | We all know that we've spent many integrated
man hours trying to figure out why our network
connections
|
|
|
152
|
Fri Nov 30 21:27:24 2007 |
rana | DAQ | PEM | weather / stacis / c1pem1 | I was trying to add some Seis BLRMS channels
to the c1pem1 processor so that we could
have DMT trends.
|
|
|
151
|
Fri Nov 30 20:17:26 2007 |
Andrey | Configuration | PEM | Accelerometers and alum.plates for them | All 6 accelerometers which were located near
the ITMX are turned off and disconnected
from the power cords.
|
|
|
150
|
Fri Nov 30 20:13:57 2007 |
dmass | Summary | General | HeNe UniPhase Laser | Data for the Uniphase 1.9 mW HeNe laser (labeled:
"051507 From ISCT-BS") SN: 1284131 Model:
1103P
|
|
|
149
|
Fri Nov 30 19:46:58 2007 |
rana | Configuration | Computers | EPICS Time Bad again | The time on the EPICS screens is off by 10
minutes again. Por Que?
|
|
|
148
|
Fri Nov 30 19:29:14 2007 |
rana | Configuration | SUS | new screen | Andrey is working on a new screen to show
us the drift of the optics by alarming on
their osem values. [COLOR=darkred]You can |
|
|
147
|
Fri Nov 30 19:11:05 2007 |
rana | Configuration | Electronics | ETMX oplev dead again | I removed the ETMX HeNe and put in on a test
table and it fired up fine. In its
previous location the light on the HeNe power |
|
|
146
|
Fri Nov 30 13:46:50 2007 |
rob | Configuration | Electronics | ETMX oplev dead again | [quote]In the interests of getting the Xarm
alignment script working again, I reset the
local damping gains for the test masses to |
|
|
145
|
Fri Nov 30 11:44:57 2007 |
rob | Configuration | Electronics | ETMX oplev | In the interests of getting the Xarm alignment
script working again, I reset the local damping
gains for the test masses to their previous |
|
|
144
|
Fri Nov 30 11:22:22 2007 |
ajw | Summary | CDS | GEO DV => LIGO DV | [quote][URL=http://www.aei.mpg.de/~hewitson/]Martin
Hewitson[/URL] of [B]GEO600[/B] fame has
modified the cool GEO DV
|
|
|
143
|
Thu Nov 29 19:35:14 2007 |
rana | HowTo | Computer Scripts / Programs | GPIB Scripts | [quote]I've spent a lot of time trying to
configurate the GPIB-USB interface for the
HP4195. After installing 1) the Agilent libraries, |
|
|
142
|
Thu Nov 29 18:10:13 2007 |
Alberto | HowTo | Computer Scripts / Programs | GPIB Scripts | I've spent a lot of time trying to configurate
the GPIB-USB interface for the HP4195. After
installing 1) the Agilent libraries, 2) the |
|
|
141
|
Thu Nov 29 15:17:53 2007 |
rob | Configuration | PSL | ISS |
I put some ISS beam on the diode on the PSL
table. In the previous layout, this was |
|
|
140
|
Thu Nov 29 14:29:22 2007 |
tobin | Configuration | Computers | linux1 httpd/conlogger fixed | I think I fixed the [url=http://linux1/cgi-bin/conlog_web.pl]conlogger
web interface on linux1[/url].
|
|
|
139
|
Thu Nov 29 11:10:54 2007 |
rob | Omnistructure | VAC | RGAlogger sleeping | Without the RGA controller responding, the
RGAlogger script just hangs. Rather than
fix it, I just put it to sleep by commenting |
|
|
138
|
Thu Nov 29 10:36:47 2007 |
alberto | Configuration | Computer Scripts / Programs | Agilent 82357B GPIB to USB Interface Installation Procedeure | To run the Agilent Automation-Ready CD provided
with the interface is only the first step
of the installation. Apparently there should |
|
|
137
|
Wed Nov 28 21:51:52 2007 |
tobin | Configuration | PSL | ISS | I replaced the front-end differential receivers
for the ISS's "inner-loop" sensor and monitor
diode inputs with lower-noise [url=http://focus.ti.com/docs/prod/folders/print/ths4131.html]THS4131[/url]'s |
|
|
136
|
Wed Nov 28 19:44:18 2007 |
tobin | Update | PSL | HEPA | I found the HEPA turned off completely. I
turned it on. |
|
|
135
|
Wed Nov 28 19:02:41 2007 |
Andrey | Bureaucracy | WIKI-40M Update | New WIKI-40M page describing Matlab Suspension Modeling |
I created the WIKI-40m page with some details
about my today's talk on the 40-m lab meeting.
|
|
|
134
|
Wed Nov 28 17:41:34 2007 |
rob | Update | PSL | FSS again | I investigated the FSS a bit more today.
I looked at the signals coming out of the
FSS frequency reference, and saw that both |
|
|
133
|
Wed Nov 28 17:15:26 2007 |
rana | Configuration | SUS | ETMY damping / watchdogs | Steve has noted that ETMY was often tripping
its watchdog. I saw this again today.
|
|
|
132
|
Wed Nov 28 16:46:28 2007 |
rana | Configuration | Computers | scientific linux 5.0 | I tried installing Scientific Linux on Tiramisu.
The installation process was so bad (really)
that I quit after 15 minutes. Its back to |
|
|
131
|
Wed Nov 28 16:18:15 2007 |
Alberto | Metaphysics | Environment | so clean you can eat on it | I tidied up the desks in the lab, brought
the Spectrum Analyzers back to the Salumeria
(you don't want to know about that), sorted |
|
|
130
|
Wed Nov 28 12:43:53 2007 |
Andrey | Bureaucracy | | Here was the PDF-file of my presentation |
I was making a report with powerpoint presentation
during that Wednesday's 40-m meeting.
|
|
|
129
|
Wed Nov 28 08:47:29 2007 |
steve | Omnistructure | VAC | rga is out of order | The rga is not working since Nov 10
The controller is broken.
pd65-m-d23 |
|
|
128
|
Wed Nov 28 04:21:46 2007 |
rana | Update | PSL | FSS | [quote]Rana, Tobin
[SIZE=1]
We looked at the RF PD signal to the FSS |
|
|
127
|
Tue Nov 27 20:47:00 2007 |
tobin | Update | PSL | FSS | Rana, Tobin
We looked at the RF PD signal to the FSS |
|
|
126
|
Tue Nov 27 16:18:58 2007 |
rob | Configuration | IOO | MC loop | Reduced the common gain to 22dB in the [COLOR=blue]mcup[/COLOR]
script, so that the WFS would not blow the
lock. The above measure of the OLG was done |
|
|
125
|
Tue Nov 27 15:47:17 2007 |
rob | Configuration | IOO | MC loop | After the FSS running pretty quick, I checked
the MC loop. I used TPA 1&2.
|
|
|
124
|
Tue Nov 27 15:45:08 2007 |
rob | Configuration | PSL | FSS loop |
It's unclear (to me, at least) what was the
end result of the FSS path tweaking before |
|