| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15294
|
Fri Apr 3 12:09:53 2020 |
Jon | Update | CDS | C1AUXEY wiring + channel list |
Quote:
|
|
|
15383
|
Mon Jun 8 18:14:55 2020 |
gautam | Update | CDS | Vertex FEs crashed | Summary:
Around 5pm local time, the three
vertex FEs crashed. AFAIK, |
|
|
15423
|
Mon Jun 22 17:51:50 2020 |
gautam | Update | CDS | c1iscaux was down | The machine needed a hard reboot as it
was un-ssh-able.
The exact time that the machine |
|
|
15462
|
Thu Jul 9 16:02:33 2020 |
Jon | HowTo | CDS | Procedure for setting up BHD front-ends | Here is the procedure for setting up the
three new BHD front-ends (c1bhd, c1sus2,
c1ioo - replacement). This plan is based |
|
|
15515
|
Wed Aug 12 17:36:42 2020 |
gautam | Update | CDS | Timing distribution slot availability | See Attachment
#1. J8 was connected |
|
|
15518
|
Wed Aug 12 20:14:06 2020 |
Koji | Update | CDS | Timing distribution slot availability | I believe we will use two new chassis at
most. We'll replace c1ioo from Sun to
Supermicro, but we recycle the existing timing |
|
|
15521
|
Thu Aug 13 11:30:19 2020 |
gautam | Update | CDS | Timing distribution slot availability | That's great. I wonder if we can also
get away with not adding new Dolphin infrastructure.
I'd really like to avoid changing any |
|
|
15522
|
Thu Aug 13 13:35:13 2020 |
Koji | Update | CDS | Timing distribution slot availability | The new dolphin eventually helps us. But
the installation is an invasive change to
the existing system and should be done at |
|
|
15524
|
Fri Aug 14 00:01:55 2020 |
gautam | Update | CDS | BHD / OMC model channels now added to autoburt | I added the EPCIS channels for the c1omc
model (gains, matrix elements etc) to the
autoburt such that we have a record of these, |
|
|
15525
|
Fri Aug 14 10:03:37 2020 |
Jon | Update | CDS | Timing distribution slot availability | That's great news we
won't have to worry about a new timing
fanout for the two new machines, c1bhd and |
|
|
15564
|
Tue Sep 8 11:49:04 2020 |
gautam | Update | CDS | Some path changes | I edited /diskless/root.jessie/home/controls/.bashrc
so that I don't have to keep doing this |
|
|
15578
|
Wed Sep 16 17:44:27 2020 |
gautam | Update | CDS | All vertex FE models restarted | I had to make a CDS change to the c1lsc
model in an effort to get a few more signals
into the models. Rather than risk requiring |
|
|
15609
|
Sat Oct 3 16:51:27 2020 |
gautam | Update | CDS | RFM errors | Attachment
#1 shows that the |
|
|
15646
|
Wed Oct 28 09:35:00 2020 |
Koji | Update | CDS | RFM errors | I'm starting the model restarts from
remote. Then later I'll show up in the
lab to do more hard resets. |
|
|
15659
|
Wed Nov 4 17:14:49 2020 |
gautam | Update | CDS | c1bhd setup | I am working on the setup of a CDS FE,
so please do not attempt any remote
login to the IPMI interface of c1bhd |
|
|
15663
|
Fri Nov 6 14:27:16 2020 |
gautam | Update | CDS | c1bhd setup - diskless boot | I was able to boot one of the 3 new Supermicro
machines, which I christened c1bhd, in a
diskless way (with the boot image hosted |
|
|
15695
|
Wed Dec 2 17:54:03 2020 |
gautam | Update | CDS | FE reboot | As discussed at the meeting, I commenced
the recovery of the CDS status at 1750 local
time. |
|
|
15719
|
Wed Dec 9 15:37:48 2020 |
gautam | Update | CDS | RFM switch IP addr reset | I suspect what happened here is that the
IP didn't get updated when we went from
the 131.215.113.xxx system to 192.168.113.xxx |
|
|
15737
|
Fri Dec 18 10:52:17 2020 |
gautam | Update | CDS | RFM errors | As I was working on the IFO re-alignment
just now, the rfm errors popped up again.
I don't see any useful diagnostics on |
|
|
15738
|
Fri Dec 18 22:59:12 2020 |
Jon | Configuration | CDS | Updated CDS upgrade plan | Attached is the layout for the "intermediate"
CDS upgrade option, as was discussed on Wednesday.
Under this plan: |
|
|
15742
|
Mon Dec 21 09:28:50 2020 |
Jamie | Configuration | CDS | Updated CDS upgrade plan |
Quote:
|
|
|
15743
|
Mon Dec 21 18:18:03 2020 |
gautam | Update | CDS | Many model changes | The CDS model change required to get the
AS WFS signals into the RTCDS system are
rather invasive. |
|
|
15744
|
Tue Dec 22 22:11:37 2020 |
gautam | Update | CDS | AA filt repaired and reinstalled | Koji fixed the problematic channel - the
issue was a bad solder joint on the input
resistors to the THS4131. The board was re-installed. |
|
|
15745
|
Wed Dec 23 10:13:08 2020 |
gautam | Update | CDS | Near term upgrades | Summary:
There appears to be insufficient |
|
|
15746
|
Wed Dec 23 23:06:45 2020 |
gautam | Configuration | CDS | Updated CDS upgrade plan |
The diagram should clearly show
the host machines and the expansion chassis
and the interconnects between them.
We |
|
|
15760
|
Tue Jan 12 08:21:47 2021 |
anchal | HowTo | CDS | Acromag wiring investigation | I used an Acromag XT1221 in CTN to play
around with different wiring and see what
works. Following are my findings: |
|
|
15761
|
Tue Jan 12 11:42:38 2021 |
gautam | HowTo | CDS | Acromag wiring investigation | Thanks for the systematic effort.
Can you please post some
time domain plots (ndscope perferably or |
|
|
15762
|
Wed Jan 13 16:09:29 2021 |
Anchal | HowTo | CDS | Acromag wiring investigation | I'm working on a better wiring diagram
that takes into account multiple power supplies,
how their GND is passed forward to the circuits |
|
|
15763
|
Thu Jan 14 11:46:20 2021 |
gautam | Update | CDS | Expansion chassis from LHO | I picked the boxes up this morning. The
inventory per Fil's email looks accurate.
Some comments: |
|
|
15764
|
Thu Jan 14 12:19:43 2021 |
Jon | Update | CDS | Expansion chassis from LHO | That's fine, we didn't actually
request those. We bought and already have
in hand new PCIe x4 cables for the chassis-host |
|
|
15765
|
Thu Jan 14 12:32:28 2021 |
gautam | Update | CDS | Rogue master may be doing something good? | I think the "Rogue
Master" setting on the RFM network
may be doing some good. 5 mins, ago, all |
|
|
15766
|
Fri Jan 15 15:06:42 2021 |
Jon | Update | CDS | Expansion chassis from LHO | Koji asked me assemble a detailed breakdown
of the parts received from LHO, which I do
based on the high-res photos |
|
|
15767
|
Fri Jan 15 16:54:57 2021 |
gautam | Update | CDS | Expansion chassis from LHO | Can you please provide a link to this "list
of boards"? The only document I can
find is T1800302. |
|
|
15770
|
Tue Jan 19 13:19:24 2021 |
Jon | Update | CDS | Expansion chassis from LHO | Indeed T1800302 is
the document I was alluding to, but I completely
missed the statement about >3 GHz speed. |
|
|
15771
|
Tue Jan 19 14:05:25 2021 |
Jon | Configuration | CDS | Updated CDS upgrade plan | I've produced updated diagrams of the
CDS layout, taking the comments in 15476 into |
|
|
15772
|
Tue Jan 19 15:43:24 2021 |
gautam | Configuration | CDS | Updated CDS upgrade plan | Not sure if 1Y1 can accommodate both c1sus2
and c1bhd as well as the various electronics
chassis that will have to be installed. There |
|
|
15775
|
Wed Jan 20 19:12:16 2021 |
gautam | Update | CDS | SLwebview fixed | After fixing multiple issues, the model
webviews are updating, should be done
by tomorrow. It should be obvious from the |
|
|
15778
|
Tue Jan 26 12:59:51 2021 |
Anchal | HowTo | CDS | Acromag wiring investigation | Taking inspiration from SR785 on how it
reads differential signal, I figured that
acromag too always need a way to return current |
|
|
15779
|
Tue Jan 26 15:37:25 2021 |
Anchal | HowTo | CDS | Acromag wiring investigation | Here I present few wiring diagrams when
using Acromag to avoid noisy behavior and
ground loops. |
|
|
15785
|
Fri Jan 29 17:57:17 2021 |
Anchal | HowTo | CDS | Acromag wiring investigation | I found a
white paper from Acromag which
discusses how to read differential signal |
|
|
15791
|
Tue Feb 2 23:29:35 2021 |
Koji | Update | CDS | CDS crash and CDS/IFO recovery | I worked around the racks and the feedthru
flanges this afternoon and evening. This
inevitably crashed c1lsc real-time process. |
|
|
15792
|
Wed Feb 3 15:24:52 2021 |
gautam | Update | CDS | CDS crash and CDS/IFO recovery | Didn't get a chance to comment during the
meeting - This was almost certainly
a coincidence. I have never had to do |
|
|
15794
|
Wed Feb 3 18:53:31 2021 |
Koji | Update | CDS | CDS crash and CDS/IFO recovery | Really!? I didn't reboot the machines
between "sudo date" and "rtcds
start c1x0*". I tried rtcds. If it didn't |
|
|
15795
|
Wed Feb 3 21:28:02 2021 |
gautam | Update | CDS | CDS crash and CDS/IFO recovery | I am just reporting my experience - this
may be a new failure mode but I don't
think so. In the new RTCDS, the ntp server |
|
|
15833
|
Mon Feb 22 14:53:47 2021 |
gautam | Update | CDS | dtt-ezca-tools installed on rossa | The defaults cds-crtools didn't come
with some of the older ezcautils (like ezcaread,
ezcawrite etc). This is now packaged for |
|
|
15842
|
Wed Feb 24 22:13:47 2021 |
Jon | Update | CDS | Planning document for front-end testing | I've started writing up a rough testing
sequence for getting the three new front-ends
operational (c1bhd, c1sus2, c1ioo). Since |
|
|
15843
|
Thu Feb 25 14:30:05 2021 |
gautam | Update | CDS | new c1bhd setup - diskless boot | I've set up one 2U server unit received
from KT in the control room area (the fans
in it are pretty loud but other than |
|
|
15872
|
Fri Mar 5 17:48:25 2021 |
Jon | Update | CDS | Front-end testing | Today I moved the c1bhd machine from the
control room to a new test area set up behind
(west of) the 1X6 rack. The test stand is |
|
|
15890
|
Tue Mar 9 16:52:47 2021 |
Jon | Update | CDS | Front-end testing | Today I continued with assembly and testing
of the new front-ends. The main progress
is that the IO chassis is now communicating |
|
|
15904
|
Thu Mar 11 14:27:56 2021 |
gautam | Update | CDS | timesync issue? | I have recently been running into hitting
the 4MB/s data rate limit on testpoints -
basically, I can't run DTT TF and spectrum |
|