Just a heads up, I'll be starting some measurements using ETMY nowish (2pm ET, July 7th 2012) which should last for 2 to 3 hours. I will post when I finish, and then results and analysis will be to come. I'll be launching DTT measurements from cdsws1. For those who are interested (though I think I emailed everyone who might be): Matt Evans and I, before I left last friday (June 29) had thought we'd stumbled on something interesting regarding cross-coupling vs. excess cavity motion while measuring the open loop gain transfer functions of the damping loops. See LHO aLOG 3312. Specifically the 4th page of the L and P sets of plots showing that, with the damping loops open, the cross-coupling from L to P is *huge*, where it's not huge in P to L. But, as I mention in the log, the right thing to do is to measure the open loop gain with the loops closed (i.e. IN1/IN2), and take a look at the results. These are the measurements I'll be taking now.