I have taken out of loop spectra for both arms, by looking at POX/POY while the arms were controlled with ALS.
To do this, I put the POY11 Q signal directly to the whitening board, which meant that I removed the cable coming from the common mode board. (Now that we're doing CM stuff again, I have put it back, so POY is still in the slightly weird "going through the CM slow path" situation).
For the locking, both arms had FMs 1, 2, 3, 5, 6 engaged. Yarm had a gain of +17, Xarm had a gain of -17.
Y beatnote was 98.6MHz with a peak height of -22 dBm. X beatnote was 45.0MHz with a peak height -11 dBm.
I drove ITMY at 503.1 Hz with 100 counts. I drove ITMX at 521.1 Hz with 25 cnt.
Koji helped me match up the peak heights between the FINE_PHASE_OUT_HZ calibrated signals and the PDH signals.
The out of loop noise is definitely below 1kHz rms now, which is better than it was! Hooray!