Page History

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[weaver@psdev02 ~]$ ssh root@shm-neh-daq02
key_load_public: invalid format
Warning: Permanently added 'shm-neh-daq02,172.21.156.127' (RSA) to the list of known hosts.
root@shm-neh-daq02's password:
sh: /usr/bin/X11/xauth: not found
# clia shelfaddress
Pigeon Point Shelf Manager Command Line Interpreter
    Shelf Address Info: "L2SI_0002"

Timing Link Glitches (LCLS2)

This does not apply to LCLS1 timing, I believe.

• Look on main hutch grafana page at upstream-link-status graph
• ssh mcclogin (Ken Brobeck should be contacted to get access, in particular may need access to softegr account).
• ssh softegr@lcls-srv01 (Matt chooses "user 0")
• look at fanouts that are upstream of xpm:0.  three layers to get all the way back to the source (the TPG which runs the whole accelerator, has a clock input from master source.  clock could conceivably go away).  Moving upstream:
  • caget TPF:LTU0:000:RXLNKUP (immediately upstream)
  • caget TPF:IN20:000:RXLNKUP
  • caget TPF:GUNB:000:RXLNKUP (fanout that TPG drives)
  • caget TPG:SYS0:1:TS (prints out timestamp from TPG, which is a check to see that TPG is running)
  • caget TPG:SYS0:1:COUNTBRT (should be 910000 always)
• to see history run "lclshome": exposes archiver on the right hand side.  cpo couldn't bring this up (xcb error?) but weaver could
• see MCCEpicsArchiverAccess for a video on how to access the MCC epics archiver (currently the above values are not in the archiver, but Matt is going to ask Carolina to add them)

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