erik.vonreis@LIGO.ORG - posted 14:35, Friday 15 September 2023 - last comment - 09:55, Tuesday 19 September 2023(72904)
BBB channel dropped from Picket Fence
The BBB channel was continually going into the alarm range. It's been removed from Picket Fence FOM and EPICS.
The steps for removal were:
1. Edited /opt/rtcds/userapps/release/isi/h1/scripts/Picket-Fence/LHO-picket-fence.py. Commented out the block at line 39 that adds the "BBB" channel.
2. VNC to nuc5. Close the Picket Fecne window.
3. ssh as controls to nuc5. Run "start/launch.sh". This restarts the Picket Fence FOM, which also sets the EPICS variables.
Thanks Erik.
FYI - There are a bunch of stations around the Vancouver area, but BBB is the only one hosted by PNSN. We've reached out to see if we can get access to a similar low-latency server so that we can hopefully find a quieter station to use. These stations are useful for monitoring incoming motion from Alaska.