J. Kissel, T. Sadecki, S. Appert

The Bounce/Roll Mode Dampers (BRDs, D1500228) are to be pre-tuned to the measured highest vertical (a.k.a. "bounce") and roll resonances of the QUADs. CIT has graciously pre-tuned them for us following the procedure, T1700142, but unfortunately tuning is a graceful art of wiggling the masses around within the slop of the screws and it's *very* sensitive, and vulnerable to change with shipping.

As such, we wanted to 
    - get some practice tuning them ourselves, because we'll have to do so for the three new test masses we're getting,
    - check that the resonance frequencies survived shipping to us, and
    - adjust the bounce frequency for ITMY, because they were tuned to a typo frequency.

After some fumbling for about an hour with the B&K pulse software, Stephen helped us just create a new template in the PULSE B&K system that did what we wanted.
However, since we only need to measure the frequency, and our method of storage of the answer is just writing it down, I'm going to switch to using an SR785 tomorrow. The B&K software is overly complex with far too many distracting / confusing bells and whistles to just take a spectrum. Further, we're going to need the B&K laptop for measuring HAM-ISI blade, new baffle, suspension cages resonances chamber side with the hammer and accelerometer configuration, and I don't want to lose that much time again to dragging around the system and reconfiguring it. I can tune both the BRDs and the ISI TMDs with the SR785 + Laser Vibrometer setup quietly in the optics lab, and leave the B&K + Accelerometer + Hammer set up out on the floor.

The tuning process itself took us about 3-4 hours for one. We half to tune 2 per test mass.
Thankfully the tuning is spaced out by quite a bit, and we can knock out ITMY's now.

Eventually our results will end up in E1700285, but for now, 
BRD S/N  007
  Blade                     Bounce (Hz)      Roll (Hz)   Freq Resolution (mHz)
  ITMY Target                9.831            13.93          10 mHz
  As Received                9.813            13.938         50 mHz
  After Tuning               9.863            13.938         20 mHz
(Target - After) / Target     0.3%             0.05%

We acknowledge that the bounce frequency is not great, but we had already spent 2 hours on tuning it, then switched to the roll side, tuned that for an hour, and just *measured* the bounce again, and found it had changed. Likely from the many iterations of on-vs-off of the measurement stand and the adjustment jig while tuning the roll side was enough to disturb the bounce side.