| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13745
|
Tue Apr 10 15:42:08 2018 |
Kira | Update | PEM | MEDM setup | An update to the screen. I changed the
min/max values for some of the parameters,
as well as changing the script so that I |
|
|
13748
|
Thu Apr 12 10:15:33 2018 |
Kira | Update | PEM | MEDM setup | Another update. I've changed the on/off
button so that it's visible which state
it's in. I did that by changing the type |
|
|
13750
|
Fri Apr 13 00:20:46 2018 |
rana | Update | PEM | MEDM setup | changed the setpoint of the EX Seismomter
T ctrl servo from 35 to 39 C to see if this
helps the stability by decreasing the cooldown |
|
|
13759
|
Wed Apr 18 12:18:39 2018 |
Kira | Update | PEM | final setup sketch | I've updated the sketches and added
in front panels for the seismometer block
and the 1U panel (attachments 3 and 4). There |
7x |
|
13760
|
Wed Apr 18 16:59:35 2018 |
rana | Update | PEM | final setup sketch: EX Seis | Can you please add dimensions to the drawing,
so we can see if things fit and what the
cable lenghts need to be? |
|
|
13768
|
Thu Apr 19 11:29:11 2018 |
rana | Update | PEM | PID tune | Yesterday, I changed the P gain of the
PID loop from zero to +0.1. Seems good
so far; will monitor for a couple days to |
|
|
13769
|
Thu Apr 19 12:23:30 2018 |
Kira | Update | PEM | final setup sketch update | I've added in the dimensions to my
sketch.
It seems like placing the two connectors |
|
|
13771
|
Thu Apr 19 18:23:51 2018 |
Kira | Update | PEM | final setup sketch update | since we're just going from the short
rack (not the tall rack) to the seismometer,
can't we use a cable shorter than 45' |
|
|
13774
|
Fri Apr 20 15:07:45 2018 |
Kira | Update | PEM | final setup sketch update | If we lay the cable along the floor then
it should be around 6' to the current
setup and about 20' to the actual |
|
|
13777
|
Fri Apr 20 23:36:28 2018 |
Kevin | Update | PEM | Seismometer BLRMs | Steve secured the GPS time server in the
rack above the AA board and removed the wooden
block that it was resting on. The new rack |
|
|
13780
|
Mon Apr 23 20:06:35 2018 |
rana | Update | PEM | PID tune | This shows a step response of the EX seis
temp control with K_I = -1 and K_P = -0.1.
The time constants for both heatup |
|
|
13782
|
Tue Apr 24 09:10:20 2018 |
Kira | Update | PEM | final setup sketch | I've attached the final sketch for
the panel on the granite block. |
|
|
13787
|
Tue Apr 24 21:19:08 2018 |
Kevin | Update | PEM | Seismometer BLRMs | In the ongoing attempt to recover the seismometer
BLRMS, I removed the AA board from the rack
and modified the BS seismometer Z channel. |
|
|
13788
|
Wed Apr 25 17:44:39 2018 |
Arnold | Update | PEM | PEM Anti-Alias wiring |
|
|
|
13790
|
Thu Apr 26 09:35:49 2018 |
Kevin | Update | PEM | PEM Anti-Alias wiring | I wired all 32 channels going to the AA
board directly to the ADC as described in
the previous |
|
|
13793
|
Thu Apr 26 19:46:26 2018 |
rana | Update | PEM | PID Quixote | Increased
the Integral gain (from -1 to -4) on the
EX temperature controller. This didn't |
|
|
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 |
|
|
13795
|
Thu Apr 26 23:00:42 2018 |
rana | Update | PEM | new Seis temp chans | After fixing the spelling of the EX temperature
readback, I also added all of the MEDM sliders
to the C0EDCU.ini file (making sure to add |
|
|
13798
|
Fri Apr 27 18:42:02 2018 |
rana | Update | PEM | new Seis temp chans | for whatever reason, I am unable to get
minute or second trends from nodus for any
channels (IMC, PEM, etc) since the reboot. |
|
|
13800
|
Mon Apr 30 15:36:18 2018 |
Kira | Update | PEM | final setup sketch | I've attached a sketch of how the panel
will be mounted. We should make a small rectangular
box that would raise the panel from the block |
|
|
13803
|
Tue May 1 11:15:19 2018 |
Kira | Update | PEM | PID Quixote | I added an out of loop sensor to the can
by placing the lab temperature sensor inside
the can. I'm not sure which channel is |
|
|
13804
|
Tue May 1 15:23:18 2018 |
Kira | Update | PEM | new ADC channel setup issue | [Kira, Johannes]
I connected up the channels for
the ADC Acromag a while back and we were |
|
|
13820
|
Mon May 7 11:46:07 2018 |
gautam | Update | PEM | FW parameter update | As part of investigation into this issue,
Jonathan Hanks pointed out that the "minute
trends" being recorded by our system |
|
|
13825
|
Tue May 8 10:24:10 2018 |
Kira | Summary | PEM | plan for this week | Here are a few things I will be working
on:
Design PCB boards for the |
|
|
13832
|
Fri May 11 11:47:33 2018 |
johannes | Summary | PEM | Acromag issues | The replacement Acromag we scooped from
the West Bridge E-Shop does actually seem
to work, although we thought it was broken |
|
|
13844
|
Tue May 15 15:13:23 2018 |
Kira | Summary | PEM | Acromag issues | I tried calibrating the other channels
today, but they still fluctuate. Sometimes
they do stabilize at +/- 10V, but then suddenly |
|
|
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 |
|
|
13850
|
Wed May 16 21:47:17 2018 |
Kevin | Update | PEM | Seismometer Noise Spectra | Earlier today Kira and I reconnected the
EX seismometer. I just took some spectra
of all three seismometers, shown in the attachments, |
|
|
13859
|
Thu May 17 15:38:19 2018 |
Kira | Update | PEM | test setup with seismometer | I've moved my setup to the actual seismometer.
I attached the temperature sensor to the
seismometer (attachment 1) with duct tape, |
|
|
13864
|
Fri May 18 14:33:34 2018 |
Kira | Update | PEM | test setup with seismometer | Here is the result of my test. I think
I'll leave the can on over the weekend
because there's a long period of time |
|
|
13871
|
Mon May 21 10:15:35 2018 |
gautam | Update | PEM | test setup with seismometer | I guess it's fine for now while we
are still finalizing the setup at EX, but
we should eventually line up the seismometer |
|
|
13872
|
Mon May 21 14:17:28 2018 |
Kira | Update | PEM | test setup with seismometer | I have attached the graph for the seismometer
temperature fluctuations over 3 days. As
we can see, there is a noticeable fluctuation |
|
|
13877
|
Tue May 22 14:49:03 2018 |
Kira | Update | PEM | test setup with seismometer | It appears that one of the wires was disconnected
overnight or this morning so I wasn't
able to gather data over a full 24 hour period. |
|
|
13882
|
Wed May 23 14:50:33 2018 |
Kira | Update | PEM | test setup with seismometer | This time the test went without issue.
The first attachment is the data for the
past 24 hours and the second attachment is |
|
|
13887
|
Thu May 24 15:18:12 2018 |
Kira | Update | PEM | PID loop restarted | Rana said that it wasn't necessary
to gather more data on the temperature fluctuations
so I have reconnected the heater circuit |
|
|
13888
|
Thu May 24 16:08:12 2018 |
Kira | Update | PEM | parts list | We will need to order a few things for
our final setup.
1U box to place the heater |
|
|
13894
|
Tue May 29 16:22:43 2018 |
Kira | Update | PEM | parts list | I've updated the parts list to be an
excel document and included every single
part we will need. This is ony a first draft |
|
|
13895
|
Tue May 29 16:33:04 2018 |
Steve | Update | PEM | air cond filters replaced | Chris replaced some air condition filters
and ordered some replacement filter today.
|
|
|
13899
|
Wed May 30 23:57:08 2018 |
gautam | Update | PEM | Burning smell in office area / control room | [koji, gautam]
We noticed quite a strong burning
smell in the office area and control room |
|
|
13903
|
Thu May 31 15:48:16 2018 |
Kira | Update | PEM | running PID script with seismometer | I have attached the result of running the
PID script on the seismometer with the can
on. The daily fluctuations are no more than |
|
|
13922
|
Wed Jun 6 15:12:29 2018 |
Kira | Update | PEM | parts from lab | Got this 1U box from the Y arm that we
could potentially use (attachment 1). It
doesn't have handles on the front but |
|
|
13964
|
Thu Jun 14 15:24:32 2018 |
Steve | Update | PEM | ADC DAC In Line Test Boards are in | We have 6 of these boards now in cabinet
E7
|
|
|
13979
|
Mon Jun 18 11:12:23 2018 |
Kira | Summary | PEM | finishing up work at the lab | Since I am finishing my job at the lab,
I have stored all my electronics in a box
(attachment 1) and placed it under the table |
|
|
13990
|
Wed Jun 20 09:16:56 2018 |
Steve | Update | PEM | dusty lab | You should wipe off the table cover before
you take it off next time.
It is important to turn up the |
|
|
14001
|
Thu Jun 21 23:59:12 2018 |
shruti | Update | PEM | Seismometer temp control | We (Rana and I) are re-assembling the temperature
controls on the seismometer to attempt PID
control and then improve it using reinforcement |
|
|
14016
|
Mon Jun 25 22:27:57 2018 |
shruti | Update | PEM | Seismometer temp control - heater circuit | After removing all the clamping screws
from the heater circuit board, I soldered
the wire connecting IRF630 to the output |
|
|
14030
|
Thu Jun 28 11:05:48 2018 |
shruti | Update | PEM | Seismometer temp control equipment | Earlier today I cleared up most of the
equipment at the X end near the seismometer
to make the area walkable. |
|
|
14113
|
Sun Jul 29 20:03:02 2018 |
rana | Update | PEM | Seismometer temp control | While Shruti is re-building Kira's
heater circuit, I looked up how to do one
of these (i.e. what does a real EE say about |
|
|
14185
|
Mon Aug 27 09:14:45 2018 |
Steve | Update | PEM | small earth quakes | Small earth quakes and suspensions. Which
one is the most free and most sensitive:
ITMX |
|
|
14186
|
Tue Aug 28 15:29:19 2018 |
Steve | Frogs | PEM | Rat is cut | The rat is cut by mechanical trap and it
was removed from ITMX south west location.
A nagy kover patkanyt a fogo elkapta |
|