Corey, Sheila
Tonight we have very low ground motion (useism band 10^-1 um/second earthquake band 10^-2um/second)
We have been using awggui to add an 8000 count sine wave at 0.1 Hz to the BS M1 LOCK L filter bank (which has a gain of 0.1). This is helping us to catch fringes more often tonight, and we are manually ramping it off once DRMI locks. This would be a good idea for operators who find themselves havign trouble locking DRMI in low ground motion.
To do this, use a terminal and type awggui. Set it up like the attached screenshot. It is a good idea to start with the gain (bottom middle) set to 0, hit set/run, then ramp the up to 8000 by hitting set in the gain box.
How does one manually ramp off this excitation? I set gain from 8000 down to 0 & the ramp time from 1 to 10 and then hit the Set button, but I wasn't sure if this did anything (the excitation was still seen on the CDS Overview for H1SUSBS).
I couldn't find instructions on killing/clearing testpoints in the wiki, but luckily Kiwamu was here and he knew the command:
> tpclear 31 *
This cleared the excitation.
Sheila let me know that I could have taken care of the excitation by taking the gain from 8000 to 0 and then EXIT-ing the awggui session. Will try this next time.