At about 80min (7:16utc) into this current lock the ASC (mosty yaw) Oscillation began. I got everything set up to run the command to change the phases (SDF window up to Accept changes, Observatory Mode to change mode, Intent Bit, AS36 window to watch phases, and a terminal to run the command).
From alogs, the most recent incarnation (alog 49116) of command to run that I found was:
z step H1:ASC-AS_A_RF36_SEG1_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG2_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG3_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG4_PHASE_R -1,28 -s 1
However, when I tried to run this step command, I received the following error:
corey.gray@zotws3:~$ z step H1:ASC-AS_A_RF36_SEG1_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG2_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG3_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG4_PHASE_R -1,28 -s 1
usage: step [-h] [-s time_step] [channel steps [channel steps ...]]
step: error: unrecognized arguments: -1,28 H1:ASC-AS_A_RF36_SEG2_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG3_PHASE_R -1,28 H1:ASC-AS_A_RF36_SEG4_PHASE_R -1,28
At first I thought it was a copy/paste issue, but no. I'm guessing by the "unrecognized argument" it lists above, there is something wrong starting at the " -1", but that's a guess since I'm not familiar with this command (and I don't know where HELP about the "time_step" field resides). I had run the previous command with no issues a couple of days ago; for comparison it was:
z step H1:ASC-AS_A_RF36_SEG1_PHASE_R +1,40 H1:ASC-AS_A_RF36_SEG2_PHASE_R +1,40 H1:ASC-AS_A_RF36_SEG3_PHASE_R +1,40 H1:ASC-AS_A_RF36_SEG4_PHASE_R +1,40 -s 1
I am stumped by the "[-s time_step]" because it looks like this should work! The only difference between commands from last Thurs/today is the +/- signs. Ugh! Workaround thoughts (only thoughts):
After the rough shift from last night while flying solo, and since the range/sensitivity has not taken a noticeable nosedive, I am deciding to live with our wiggly ASC/LSC signals with a ~2min period, and stay in OBSERVING. If we have a lockloss, I will spend a few minutes tinkering around with this command to see what I'm missing. If anyone reads this during my shift, and know what I'm missing, please give me a call to let me know what I'm missing so I can run it. Apologies for not being able to run this. I'm sure it's something basic. [Oh--I'm attaching a snapshot of where we currently stand with the AS36 R phases.]
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I just sent an email and left a sticky at the ops station, but let's not change the AS36 phases anymore. Sheila and I are pursuing other avenues of fixing these oscillations.
Also, JeffB and I couldn't get the z step version with the minus signs to work yesterday either. Yesterday I had ended up doing them one step at a time 28 times, without the ,28. So, this is something that we'll have to ask one of our CDS folks, because there might be times in the future that we want to be able to use the step command in negative as well as positive.