[Keita, Jenne]

The Yarm VCO for green locking was struggling to keep the beatnote in range, so we altered the Tune Voltage limit (H1:ALS-Y_VCO_TUNELIMIT) from 5 to 7, to allow the VCO a little more leeway.  Right now, with green PDH and ALS locked, the Yarm VCO is sitting at a tune voltage of -6.3.  I don't know if this is a repercussion of the ALS lasers being tripped off last night, but the Xarm green PDH locking has been fine all day.  The lasers were both turned on around 9 or 10am, so they should be thermally equilibrated. 

Also, we were occasionally seeing oscillations in the green locking PDH servos, particularly on the Yarm.  We lowered the UGF of the tidal offloading (H1:LSC-Y_ARM_CTRL_UGF) from 0.08 Hz to 0.04 Hz, and that seems to have stopped the oscillations.  We lowered the Xarm UGF so that the 2 arms match.

However, we are still struggling to hold the arms on resonance.  We're just flopping over the resonance pretty quickly.  This is likely related to the ISS problems that we've been having all day.  (Right now the first loop is just off, which is better than having it on and oscillate.)  For the rest of the evening, we can work on things like DRMI ASC commissioning.  In the morning, PeterK will continue his diagnosis and debugging of the ISS first loop.