J. Kissel, J. Betzwieser

We've recently installed CDS oscillator parts which have their phase synchronized to GPS time 0, in order to progress with the O2 calibration line scheme of PCAL cancelling suspension lines (see LHO aLOG 27733). However, when I turned the lines on the other day (see LHO aLOG 27981), I'd installed the new oscillator / cal line frequency (a copy of LLO's frequency) in the Pitch Oscillator of the optical lever lockins. These lockins still use the former unsynchronized oscillators. As such, I've swapped the calibration line frequencies such that the old frequency (35.9 Hz) is now run by the Pitch Optical lever lockin, H1:SUS-ETMY_LKIN_P_OSC (so that it's just as unsynchronized as it was during O1) and the new frequency (35.3 Hz) is run by the now synchronized cal line oscillator that *used* to run the O1 test mass calibration line, H1:SUS-ETMY_L3_CAL_LINE.

These settings have been captured in the SAFE and down.snaps of the SDF system.