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Entry  Sun Aug 5 13:28:43 2018, gautam, Update, CDS, c1lsc flaky 
    Reply  Mon Aug 6 00:26:21 2018, gautam, Update, CDS, More CDS woes CDSoverview.png
       Reply  Mon Aug 6 14:38:38 2018, gautam, Update, CDS, More CDS woes CDScrash.pngMC1failures.png
          Reply  Mon Aug 6 19:49:09 2018, gautam, Update, CDS, More CDS woes IMG_7106.JPG
             Reply  Tue Aug 7 11:30:46 2018, gautam, Update, CDS, More CDS woes 
                Reply  Tue Aug 7 22:28:23 2018, gautam, Update, CDS, More CDS woes 
                   Reply  Wed Aug 8 23:03:42 2018, gautam, Update, CDS, c1lsc model started 
                      Reply  Thu Aug 9 12:31:13 2018, gautam, Update, CDS, CDS status update 
                         Reply  Wed Aug 15 21:27:47 2018, gautam, Update, CDS, CDS status update 
                            Reply  Tue Sep 4 10:14:11 2018, gautam, Update, CDS, CDS status update 
                               Reply  Wed Sep 5 10:59:23 2018, wgautam, Update, CDS, CDS status update 
                                  Reply  Thu Sep 6 14:21:26 2018, gautam, Update, CDS, ADC replacement in c1lsc expansion chassis CDSoverview.png
                                     Reply  Fri Sep 7 12:35:14 2018, gautam, Update, CDS, ADC replacement in c1lsc expansion chassis Screenshot_from_2018-09-07_12-34-52.png
                                        Reply  Mon Sep 10 12:44:48 2018, Jon, Update, CDS, ADC replacement in c1lsc expansion chassis 
                                     Reply  Thu Sep 20 11:29:04 2018, gautam, Update, CDS, New PCIe fiber housed PCIeFiberSwap.pngPCIeFiberSwap_FBrebooted.png
                                        Reply  Thu Sep 20 16:19:04 2018, gautam, Update, CDS, New PCIe fiber install postponed to tomorrow 
                                           Reply  Fri Sep 21 16:46:38 2018, gautam, Update, CDS, New PCIe fiber installed and routed PCIeFiber.pngIMG_5878.JPG
Message ID: 14202     Entry time: Thu Sep 20 11:29:04 2018     In reply to: 14194     Reply to this: 14203
Author: gautam 
Type: Update 
Category: CDS 
Subject: New PCIe fiber housed 

[steve, yuki, gautam]

The plastic tubing/housing for the fiber arrived a couple of days ago. We routed ~40m of fiber through roughly that length of the tubing this morning, using some custom implements Steve sourced. To make sure we didn't damage the fiber during this process, I'm now testing the vertex models with the plastic tubing just routed casually (= illegally) along the floor from 1X4 to 1Y3 (NOTE THAT THE WIKI PAGE DIAGRAM IS OUT OF DATE AND NEEDS TO BE UPDATED), and have plugged in the new fiber to the expansion chassis and the c1lsc front end machine. But I'm seeing a DC error (0x4000), which is indicative of some sort of timing error (Attachment #1) **. Needs more investigation...

Pictures + more procedural details + proper routing of the protected fiber along cable trays after lunch. If this doesn't help the stability problem, we are out of ideas again, so fingers crossed...

** In the past, I have been able to fix the 0x4000 error by manually rebooting fb (simply restarting the daqd processes on fb using sudo systemctl restart daqd_* doesn't seem to fix the problem). Sure enough, seems to have done the job this time as well (Attachment #2). So my initial impression is that the new fiber is functioning alright yes.

Quote:

The PCIe fiber replacement is a more involved project (Steve is acquiring some protective tubing to route it from the FE in 1X6 to the expansion chassis in 1Y3)

Attachment 1: PCIeFiberSwap.png  22 kB  Uploaded Thu Sep 20 12:39:22 2018  | Hide | Hide all
PCIeFiberSwap.png
Attachment 2: PCIeFiberSwap_FBrebooted.png  22 kB  Uploaded Thu Sep 20 13:11:19 2018  | Hide | Hide all
PCIeFiberSwap_FBrebooted.png
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